HHS: Efforts to Research and Inform the Public about Nonoxynol-9 and HIV
Released: 2005-04-12T00:00:00

Letter

Background

N-9 was developed as a contraceptive and is the only spermicide available in the United States. It is found in a variety of over-the-counter vaginal contraceptive products—including creams, foams, gels, and suppositories—and on N-9 condoms. Vaginal contraceptive products that contain N-9 have been sold over-the-counter in the United States for almost 50 years. N-9 condoms have been available over-the-counter in the United States since the early 1980s.

Federal Agency Responsibilities

Three federal agencies within HHS—CDC, NIH, and FDA—have responsibilities that affect the public’s use of N-9 contraceptive products.

CDC is responsible for conducting and reviewing research related to public health issues and disseminating this information to state public health agencies, medical professionals, and the public. CDC shares information, for example, on diseases such as HIV and uses a variety of means to do this, including publications such as the Morbidity and Mortality Weekly Report (MMWR) and treatment guidelines. It also provides information through its Web site and in letters issued directly to state health departments and other public health professionals.

NIH, which comprises 27 separate institutes and centers, conducts research in its own laboratories and funds research in universities, medical schools, hospitals, and other research institutions. Some of this research investigates drugs used to prevent and treat various diseases, including HIV. In order to provide information to the public on various health issues, NIH may post the results of its research on its Web site and sometimes publishes summary reports on various research topics.

FDA is responsible, among other things, for regulating the manufacture and sale of drugs and medical devices sold in the United States. FDA also regulates the labeling information provided by manufacturers of drugs and medical devices. FDA also seeks to educate the public about the products it regulates and uses a variety of means, including pamphlets, Web site information, and the FDA Consumer magazine to do this. Within FDA, two centers are involved in the review of N-9 contraceptive products—the Center for Drug Evaluation and Research (CDER), which oversees vaginal contraceptive drug products, and the Center for Devices and Radiological Health (CDRH), which oversees condoms, including N-9 condoms.

FDA reviews the active ingredients in specific categories of drugs that were sold over-the-counter in the United States prior to 1975 through a process known as the “monograph process.” Under the monograph process, FDA establishes the conditions under which specific categories of drugs, rather than specific products, are generally recognized as safe and effective and not misbranded. Examples of categories of drugs subject to the monograph process include antacids and certain cold and cough remedies. When FDA completes the monograph process, it issues a final monograph that describes labeling indications, warnings, and directions for use, among other things. Prior to the issuance of a final monograph, FDA policies allow over-the-counter drugs to stay on the market. However, FDA may pursue regulatory actions against these drugs—such as requiring labeling changes—if the agency determines that the failure to act poses a potential health hazard to consumers.

Since N-9 was available over-the-counter prior to 1975, it is the subject of a monograph review for a category of drugs called vaginal contraceptive drug products. As of March 2005, FDA had not issued a final monograph for this category of drugs. Although some condoms on the market are lubricated with N-9, these N-9 condoms are not subject to the monograph review process for vaginal contraceptive products because FDA regulates these products as medical devices.

Federal Agencies Have Researched the Safety and Effectiveness of N-9 as a Microbicide, While Manufacturers Reviewed Its Safety

Federal agencies have undertaken a variety of efforts to research the safety and effectiveness of N-9 as a microbicide. This research included funding, conducting, or reviewing studies on the safety and effectiveness of N-9 as a microbicide. It was largely conducted until 2000, when the preliminary results of a major clinical study prompted CDC and NIH to halt further research on N-9 as a microbicide because of safety concerns. FDA—as part of its regulation of vaginal contraceptive products—continued to review research on the safety of N-9 and proposed new warning labels for vaginal contraceptive products in 2003. Manufacturers reviewed the safety of N-9 for the purpose of commenting on the proposed warning labels.

Federal Agencies Researched the Safety and Effectiveness of N-9 as a Microbicide until 2000

During the 1990s, three federal agencies—CDC, NIH, and FDA—funded, conducted, or reviewed medical research to determine whether N-9 was safe and effective as a microbicide. CDC, as part of its public health efforts to prevent the spread of HIV, conducted and funded research involving N-9. For example, in 1996, CDC and others began a major 4-year study on the effectiveness of N-9 vaginal contraceptive products in preventing the transmission of STDs, including HIV, among female sex workers located in four countries. In addition, CDC compiled a bibliography of research on potential microbicides conducted through September 1996. Containing abstracts of over 55 safety and effectiveness studies and other reviews of N-9 vaginal contraceptive products and N-9 condoms, the bibliography was intended as a resource for clinicians, researchers, and public health specialists interested in microbicide research.

Like CDC, NIH conducted and funded research during the 1990s on N-9’s safety and effectiveness as a microbicide. Within NIH, two institutes were primarily responsible for most of its N-9 research—the National Institute of Allergy and Infectious Diseases and the National Institute of Child Health and Human Development. NIH’s research ranged from laboratory studies of N-9’s effect on animal tissue to randomized clinical trials that measured the effect of various N-9 vaginal contraceptive products in preventing HIV transmission among women.

Although the FDA did not conduct or fund research on N-9, the agency reviewed research on N-9 vaginal contraceptive products as part of its monograph process. The agency convened an advisory committee meeting in 1996 to review available research on the safety and effectiveness of N-9 as both a contraceptive and a microbicide. This meeting included presentations on a wide variety of published and unpublished research, including laboratory studies of N-9 and clinical studies on N-9 vaginal contraceptive products. The meeting also included discussion about the implications of this research and identified guidelines for the design of future studies to address concerns about dosage and formulation differences in the research available at the time, among other things.

The results of the research on N-9 that federal agencies conducted, funded, and reviewed during the 1990s were inconsistent. For example, among the studies compiled in CDC’s bibliography on microbicide research, some found that the use of N-9 vaginal contraceptives reduced the incidence of HIV as well as other STDs, while other studies indicated that frequent use of N-9 vaginal contraceptives may have irritated subjects’ vaginal tissue, which may result in subjects being more susceptible to HIV infection. Throughout the 1990s, various reviews in clinical journals also characterized the results of research on N-9 as inconsistent. For example, a 1995 review in the journal AIDS noted the existence of “substantially different opinions” about the safety and effectiveness of N-9 when used for HIV prevention. Similarly, a 1999 commentary in the American Journal of Public Health noted that epidemiologic studies on N-9 were conflicting.

During the 1990s, reviewers of studies involving N-9 observed that several factors may have accounted for the inconsistency of the research results. For example, studies varied in terms of the dosage of N-9 and the chemical formulation of the contraceptive product used. Additionally, the different populations studied may have affected the outcomes of the research. For example, some studies were based on the experience of sex workers, who used N-9 vaginal contraceptive products with relatively higher frequency than the populations in other studies. Studies were also not always comparable to the extent that they varied in their sample sizes.

In 2000, after the preliminary results of a major clinical study—known as the COL-1492 study—were reported, CDC and NIH stopped conducting and funding research on N-9 as a microbicide out of concern for participants’ safety. Compared to the results of earlier studies, the preliminary results of the COL-1492 study suggested more strongly that N-9 did not prevent HIV infection and, in addition, that N-9 may increase the risk of infection among frequent users. The COL-1492 study compared the use of an N-9 vaginal contraceptive gel called COL-1492 to a vaginal moisturizer without N-9 among 892 sex workers in Benin, Cote d’Ivoire, South Africa, and Thailand. The preliminary results of this study indicated that the incidence of HIV infection among users of the N-9 vaginal contraceptive gel was 48 percent higher than among users of the moisturizer without N-9. Moreover, the study showed there was little effect of N-9 vaginal contraceptive use on the incidence of certain other STD infections, such as gonorrhea and chlamydia. After the preliminary results of the COL-1492 study became available, officials at CDC and NIH decided to discontinue researching N-9 as a possible microbicide for HIV.

After 2000, FDA Continued to Review Research on the Safety of N-9 as Part of Its Regulation of N-9 Contraceptive Products

Although federal agencies stopped conducting and funding research on N-9 as a potential microbicide in 2000, FDA continued to review research on the safety of N-9 as part of the agency’s regulation of vaginal contraceptive products under the monograph process. During this review, FDA considered, among other things, the recommendations of two key public health reports, published in 2002 by CDC and by the World Health Organization (WHO) in collaboration with the CONRAD Program. The reports recommended that N-9 not be used to prevent HIV transmission and warned that frequent use of N-9 vaginal contraceptive products may cause genital lesions, which may increase the risk of HIV infection in persons at high risk for HIV. The reports also recommended that N-9 condoms not be promoted because there was no published scientific evidence that N-9-lubricated condoms provide any additional protection against STDs compared with other condoms. The reports also recommended that N-9 contraceptive products, including both N-9 condoms and vaginal contraceptive products, should not be used during anal intercourse. The WHO/CONRAD report concluded that for women at low risk for HIV infection, the use of N-9 vaginal contraceptives remained a viable option.

Based on its review of this and other information, including the published results of the COL-1492 study, FDA determined that the use of N-9 vaginal contraceptive products may pose a potential health hazard to consumers and proposed new warning labels for N-9 vaginal contraceptive products in January 2003. Specifically, FDA proposed adding warning labels that indicate that vaginal contraceptive products with N-9 do not protect against HIV or other STDs and that frequent use, such as more than once a day, of N-9 can increase vaginal irritation, which may increase the risk of contracting HIV from infected partners. The proposed warnings also indicate that the labeled products are for vaginal use only.

As of March 2005, FDA was in the process of finalizing the rule for new warning labels for vaginal contraceptive products containing N-9. According to FDA officials, a draft of the final rule had been completed, and the rule had begun the clearance process within HHS. Officials told us that they expected the clearance process to be completed by September 2005, after which the final rule would be published. According to FDA officials, the rule-making process used to establish new warning labels typically takes more than 2 years.

As part of the process for establishing new warning labels for N-9 vaginal contraceptive products, FDA reviewed more than 150 comments submitted in response to the proposed warning labels. These comments ranged from concerns that the proposed language was not strong or specific enough to comments indicating that FDA had gone too far in its proposed warning. FDA officials also stated that 10 specific issues brought up in the public comments on the proposed warning labels required extensive review, including comments that the labels should specifically warn against using vaginal contraceptive products for anal intercourse and concerns that the proposed warning labels might discourage women who are at low risk for HIV from using N-9 as a contraceptive.

FDA officials told us they also plan to issue guidance and proposed new warning labels for condoms—including warnings for N-9 condoms. They said they expect a draft to be issued for public comment in 2005. These officials noted that they considered new warning labels for N-9 condoms in the context of a larger initiative started in 2001 to review condom labeling for medical accuracy with respect to the overall effectiveness of condoms against STDs. FDA officials told us that officials from CDRH and CDER collaborated to ensure that the new labeling proposals for N-9 condoms and N-9 vaginal contraceptive products will be consistent. As of March 2005, an HHS official told us that HHS had completed its review of the draft guidance and labels. After this review, FDA officials told us the draft would be sent to the Office of Management and Budget for review before being issued for public comment. FDA officials said that FDA expects to be able to issue the draft guidance and condom warning labels by May 2005.

Manufacturers of N-9 Contraceptive Products Have Researched the Safety of N-9

Two manufacturers of N-9 contraceptive products that we interviewed have researched the safety of N-9. Specifically, they reviewed the research literature on the safety of N-9 in order to prepare comments in response to the language of FDA’s proposed warning labels for vaginal contraceptive products. For example, one manufacturer concluded that FDA’s proposed labeling—that implied a link between the use of N-9 vaginal contraceptive products and an increased risk of HIV transmission—was not sufficiently supported by the scientific literature. However, no manufacturers we interviewed have conducted research on N-9’s effectiveness as a microbicide. Manufacturers would only be required to conduct such research if they were to seek approval from FDA to use N-9 vaginal contraceptives for a new indication—such as HIV prevention. However, FDA officials reported that no manufacturers sought approval for a new indication for N-9.

The Information Provided to the Public about the Use of N-9 as a Microbicide Has Been, at Times, Inconsistent

The information CDC and FDA provided the public about the use of N-9 as a microbicide has been, at times, inconsistent. In the early 1990s, CDC cautioned that there was insufficient information to conclude that N-9 may prevent HIV transmission. By 1998, in response to new research, CDC informed the public that N-9 vaginal contraceptive products did not prevent HIV. During the same period, FDA also cautioned that N-9 had not been proven to prevent HIV transmission, but in 1999, a brochure on its Web site stated that N-9, along with a condom, may be used to prevent HIV transmission. By 2000, CDC stated that N-9 may actually increase the risk of contracting HIV when used frequently. FDA, in contrast, did not revise the brochure on its Web site that stated some experts believe N-9 may prevent HIV and suggested using N-9 along with a condom. Some manufacturers we interviewed have also taken steps to inform the public about N-9 and HIV, while others have not. (See app. I for a timeline of selected events and publications related to N-9’s potential use as a microbicide.)

At Times, CDC and FDA Provided Inconsistent Information about the Use of N-9 to Prevent HIV

In the early 1990s, based on the information that was available at the time, CDC cautioned that there was insufficient information to conclude that N-9 may prevent HIV transmission. According to CDC’s 1993 STD treatment guidelines, “protection of women against HIV infection should not be assumed from the use of vaginal spermicides, vaginal sponges, or diaphragms.” This document also stated, “No data exist to indicate that condoms lubricated with spermicides are more effective than other lubricated condoms in protecting against the transmission of HIV infection….” This document recommended the use of condoms, with or without a spermicide in order to protect against STDs, including HIV. Similarly, an article in a 1993 issue of CDC’s MMWR cautioned that there was no evidence that N-9 prevents HIV transmission. According to this issue of MMWR, “No reports indicate that nonoxynol-9 used alone without condoms is effective for preventing sexual transmission of HIV.” This document also repeated the recommendation to use condoms with or without a spermicide.

By 1998, in response to new research, CDC informed the public that N-9 should not be used as a microbicide because it does not protect against HIV and revised its STD treatment guidelines to state that “vaginal spermicides offer no protection against HIV infection, and spermicides are not recommended for HIV prevention.” At this time, CDC did not revise its recommendation to use condoms with or without spermicide.

FDA’s educational publications during the 1990s also cautioned that N-9 had not been proven to prevent HIV transmission, but in some cases, the agency suggested that N-9, along with a condom, may be used to prevent HIV transmission. For example, a 1990 article published in the magazine FDA Consumer stated, “Although it has not been scientifically proven, it is possible that Nonoxynol-9 may reduce the risk of transmission of the AIDS virus during intercourse as well. Using a spermicide along with a latex condom is therefore advisable, and is an added precaution in case the condom breaks…. Some experts think that even if a condom with spermicide is used, additional spermicide in the form of a jelly, cream or foam should be added.” In 1998, an FDA Consumer article stated that N-9 may reduce the risk of transmitting certain STDs, but cautioned that it has not been proven to prevent sexual transmission of HIV. Another 1998 FDA Consumer article stated that spermicides alone do not give adequate protection against HIV. However, in 1999, FDA indicated to the public that N-9 may protect them against HIV transmission. An FDA brochure posted to the Web site and titled Condoms and Sexually Transmitted Diseases…Especially AIDS stated, “Some experts believe nonoxynol-9 may kill the AIDS virus during intercourse, too. So you might want to use a spermicide along with a latex condom as an added precaution….”

In response to the preliminary results of the COL-1492 study that were released at the 2000 International AIDS Conference, CDC revised its earlier position on N-9. CDC had previously cautioned that N-9 used alone without a condom offered no protection against HIV infection and was not recommended for HIV prevention. However, by 2000 CDC’s educational publications had included the statement that N-9 may increase the risk of transmission when used frequently. In an August 2000 letter to health care providers and public health personnel, CDC reported that the preliminary results of the COL-1492 study demonstrated that N-9 did not protect against HIV infection and may have caused more transmission. This letter also stated that N-9 should not be recommended as an effective means of HIV prevention and that the use of N-9 for HIV prevention may be harmful to certain users. This warning was also published in an August 2000 issue of MMWR. Similarly, in 2002 when CDC revised its STD treatment guidelines, it included information indicating that spermicides containing N-9 were not effective in preventing HIV infection and that frequent use had been associated with genital lesions, which may be associated with an increased risk of HIV transmission. These revised STD treatment guidelines further stated that condoms lubricated with spermicides are no more effective than other lubricated condoms in preventing HIV transmission, and also stated that “purchase of any additional condoms lubricated with the spermicide N-9 is not recommended.” This information also appeared in an article in a May 2002 issue of MMWR.

While CDC was informing the public that N-9 was not effective in preventing HIV and that frequent use of N-9 may increase the risk of HIV transmission, the public would have obtained different information from FDA. An FDA official told us that the agency has not disseminated any new educational materials related to N-9 and HIV transmission since 2000. However, FDA left its brochurewhich stated that some experts believe that N-9 may prevent HIV transmissionon its Web site until this information was deleted in September 2003 when FDA officials realized the information in the brochure on the Web site was inconsistent with the proposed warning labels for N-9 vaginal contraceptive products. According to one FDA official, documents on the agency’s Web site were updated in an “ad hoc” manner, rather than through an official process.

Some Manufacturers Have Taken Steps to Inform Consumers about N-9 and HIV

The three largest condom manufacturers have taken steps to inform the public about N-9 and HIV. In particular, one condom manufacturer has taken multiple steps to inform its consumers that N-9 does not prevent HIV transmission and may increase some users’ risk of contracting HIV. This large manufacturer of condoms has added warning labels to N-9 condom packaging that indicate that N-9 is not effective in protecting against HIV. This manufacturer has also published pamphlets and used similar language on its Web site to explain to consumers the risks associated with N-9. In addition, two other large manufacturers of condoms added warnings to their Web sites about the use of N-9. In contrast, officials from major manufacturers of vaginal contraceptive products that we interviewed told us they have not disseminated such information. One of these manufacturers reported that its review of research on N-9 suggested that the link between the use of N-9 and an increased risk of HIV infection was speculation.

Some Manufacturers and Public Health Organizations Have Stopped Producing and Distributing N-9 Condoms

In recent years, there have been several changes in the production, distribution, and promotion of N-9 condoms. In January 2004, the condom manufacturer SSL International announced that it was halting production of its Durex brand condoms that are lubricated with N-9 because of a decrease in sales to public health agencies and because of an anticipated decrease in retail sales. SSL International representatives attributed this decrease in sales to safety concerns raised by the 2002 release of the WHO/CONRAD report. Another large manufacturer of condoms reported that the percentage of N-9 condoms sold on the retail market declined from 2000 to 2003.

Like SSL International, PPFA and a leading distributor—Mayer Laboratories—have also stopped manufacturing and distributing N-9 condoms. A representative from PPFA told us that the organization stopped manufacturing N-9 condoms in June 2002 because of safety concerns based on published scientific studies indicating that N-9 does not protect against HIV and that frequent N-9 use may actually increase HIV transmission. In addition, a representative from PPFA stated that its decision to halt production of N-9 condoms was influenced by the release of the conclusions of the WHO/CONRAD report and the outcome of a meeting with public health entities organized by the Global Campaign for Microbicides. Another public health organization, the Gay Men’s Health Clinic in New York, has also begun to recommend that clients not use N-9 condoms. As of early in 2003, a distributor—Mayer Laboratories—stopped distributing N-9 condoms. Information from Mayer Laboratories stated that this decision was based on a concern about the safety of N-9 condoms.

Concluding Observations

CDC’s and NIH’s efforts to research N-9’s potential use as a microbicide ended in 2000, when the preliminary results of a major clinical trial indicated that N-9 may actually increase the risk of contracting HIV. CDC has warned that N-9 may increase the risk of HIV transmission when used frequently, and some manufacturers of N-9 condoms have taken steps to either add their own warning labels or remove their N-9 condoms from the market, while other manufacturers have not taken such steps. FDA has proposed requiring new warning labels that indicate that N-9 vaginal contraceptive products do not protect against HIV or other STDs and that frequent use, such as more than once a day, may increase the risk of contracting HIV. FDA is also developing proposed warning labels for N-9 condoms. While FDA expects to issue the final rule for the new warning labels for vaginal contraceptive products by September 2005, it has not yet issued proposed warning labels for N-9 condoms, and it has not indicated a target date to issue the final warning labels for N-9 condoms. Since FDA is still in the process of completing warning label changes for N-9 vaginal contraceptive products and condoms, the public may be left in doubt about the appropriate uses of these products until FDA finalizes these warnings. Further, the public may be at risk if the products are used inappropriately.

Agency Comments

HHS provided written comments on a draft of this report. (See app. II).

In its written comments, HHS stated that the final sentence in the draft report—that said the public may be at risk until FDA finalizes the warning labels for N-9 vaginal contraceptive products and N-9 condoms—may unintentionally undermine efforts to inform the public of the protection provided by condoms. HHS suggested we modify this to say that consumers may be left in doubt about the appropriate uses of these products. We have revised the conclusion to acknowledge that until FDA finalizes its warning labels, consumers may be left in doubt about the appropriate uses of these products. However, the conclusion also states that the public may be at risk if the products are used inappropriately.

In its written comments, HHS stated that the draft did not indicate that FDA had never permitted condom labeling to claim that N-9 provides any additional protection against HIV or other STDs. To ensure clarity on this issue, we have added this statement to the report. HHS’s written comments also stated that it is important to make clear that the barrier features of condoms provide the primary protection against STDs and the primary contraceptive protection. While this is an important fact in educating consumers about methods to protect themselves against STDs, the objectives of this report were focused on N-9 and its potential as a microbicide.

HHS’s written comments also stated that FDA’s primary means of public health communication is through product labeling oversight and that FDA has, on occasion, provided supplementary information through consumer outreach efforts. The draft report noted the role FDA has in labeling oversight and described FDA’s proposed warning labels for N-9 vaginal contraceptive products and its efforts to develop proposed warning labels for N-9 condoms. The draft report also described the information FDA provided to the public through a brochure that it posted to its Web site and through FDA Consumer magazine articles. HHS’s written comments also stated that the supplementary statements FDA provided to the public through consumer outreach efforts always acknowledged the scientific uncertainty concerning the effectiveness of N-9 as a protection against STDs. Examples of FDA’s acknowledgement of scientific uncertainty were provided in the draft report.

HHS also commented that the timeline in appendix I should begin with the 1988 CDC brochure Understanding AIDS, which advised that N-9, when used with a condom, might provide additional protection against HIV. We mentioned this brochure in the introduction to the draft report when we stated that in the mid-1980s N-9 showed promise as a potential microbicide for STDs, including HIV. However, as we stated in the scope and methodology section of the draft report, we focused our review on efforts to research and provide public information on N-9 and HIV from 1990 to the present because concerns about the safety of N-9 in preventing HIV first began to surface in about 1990. Further, HHS commented that the timeline should make clear that the first indication that N-9 presented added risks did not emerge until 2000 (the COL-1492 study). However, this study was not the first indication that N-9 presented added risks, and the draft report discussed earlier concerns.

HHS’s written comments also made a number of other suggestions to clarify the draft report, which we incorporated. First, HHS suggested that we clearly indicate in the report when we are discussing vaginal contraceptive products containing N-9, condoms with N-9, or both. We have reviewed the report for clarity and made changes where necessary. Second, HHS’s comments stated that much of the research discussed in the report was restricted to vaginal contraceptive products and that these studies did not involve N-9 condoms. We have clarified this point in the report. Finally, HHS’s comments stated that the 1999 FDA brochure Condoms and Sexually Transmitted Diseases . . . Especially AIDS was an Internet posting of a brochure initially issued in 1990. We clarified the text of our report to note that the Web site posting was of a brochure originally issued in 1990 and that the document stated the information was current as of December 2, 1999. We also added the 1990 brochure to the timeline in appendix I.

HHS included several other comments. First, HHS stated that we should be clear that N-9 condoms are regulated as medical devices not through the monograph process. This information was discussed in the background section of the draft report. Second, HHS’s written comments stated that the report should recognize that some manufacturers stopped selling condoms with N-9 because of economic considerations and not safety concerns. This information was included in the draft report and we noted further that one manufacturer attributed the decrease in sales of N-9 condoms to the safety concerns raised by the 2002 release of the WHO/CONDRAD report. Third, HHS raised concerns that the draft report had not explained the significance of the actions of manufacturers. This information was included in the draft report. Finally, HHS’s comments said we should note that the report on the COL-1492 study was published in 2002 and the information available prior to that time could be considered only preliminary. This information was also reflected in the draft report and in the timeline in appendix I.

HHS’s comments are reprinted in appendix II. HHS also provided technical comments, which we incorporated into the report as appropriate.

As we agreed with your offices, unless you publicly announce the contents of this report earlier, we plan no further distribution of it until 30 days from its date. We will then send copies to others who are interested and make copies available to others who request them. In addition, this report will be available at no charge on GAO’s Web site at http://www.gao.gov.

If you or your staff have any questions about this report, please call me at (202) 512-7114. Another contact and key contributors are listed in appendix III.

Timeline of Selected Events and Publications Related to N-9’s Potential Use as a Microbicide, 1990–2004

1990: An FDA brochure, Condoms and STDs. . . Especially AIDS, stated that “Some experts believe nonoxynol-9 may kill the AIDS virus during intercourse, too. So you might want to use a spermicide along with a latex condom as an added precaution. . . .” s 0 9 9 1 1998: An FDA Consumer magazine article, “On the Teen Scene: Preventing STDs,” stated that “... spermicides alone ... do not give adequate protection against HIV and other STDs.”

1990: An FDA Consumer magazine article, “Latex Condoms Lessen the Risk of STDs,” stated that “Although it has not been scientifically proven, it is possible that nonoxynol-9 may reduce the risk of transmission of the AIDS virus during intercourse. . . .”

1999: An FDA brochure on its Web site and titled Condoms and STDs... Especially AIDS continued to include the statement “Some experts believe nonoxynol-9 may kill the AIDS virus during intercourse, too. So you might want to use a spermicide along with a latex condom as an added precaution....”

2002: CDC’s 2002 STD treatment guidelines stated that “Recent evidence has indicated that vaginal spermicides containing nonoxynol-9 (N- 9) are not effective in preventing . . . HIV infection. Thus, spermicides alone are not recommended for STD/HIV prevention. Frequent use of sperm- icides containing N-9 . . . may be associated with an increased risk of HIV transmission . . . . Purchase of any additional condoms lubricated with the spermicide N-9 is not recommended. . . .”

1993: “CDC Update: Barrier Protection Against HIV Infection and Other Sexually Transmitted Diseases” in MMWR stated that “No reports indicate that nonoxynol-9 used alone without condoms is effective for preventing sexual transmission of HIV.. . . No data exist to indicate that condoms lubricated with spermicides are more effective than other lubricated condoms in protecting against the transmission of HIV infection.... Therefore, latex condoms with or without spermicides are recommended.” s 0 0 0 2 2000: Preliminary results of a major clinical study among high-risk female sex workers were presented at the International AIDS conference in Durban, South Africa. The results indicate that N-9 is not effective as a microbicide against HIV and may increase certain users’ risk of contracting the virus.

2002: WHO and CONRAD published the summary report of their consultation on the available literature regarding N-9’s safety and effectiveness as a spermicide and a microbicide. 2002: PPFA halted production and distribution of N-9 condoms. 2003: Mayer Laboratories halted distribution of N-9 condoms.

2000: NIH and CDC reported that the agencies halted all studies actively pursuing N-9’s use as a microbicide between 2000 and 2001.

1993: CDC’s 1993 STD treatment guidelines stated that “protection of women against HIV infection should not be assumed from the use of vaginal spermicides, vaginal sponges, or diaphragms.”

2000: A CDC letter issued to health care providers and public health personnel stated that because N-9 has been shown to be ineffective against HIV and may increase HIV risk among certain user groups, N-9 should not be recommended for HIV prevention.

2003: FDA proposed warning labels for vaginal contraceptive drug product packaging. The proposed warning stated that vaginal contra- ceptive products with N-9 do not protect against HIV or other STDs and that frequent use of N-9 can increase vaginal irritation, which may increase the risk of contracting HIV or other STDs. The warnings also indicated that the labeled products were for vaginal use only.

1997: CDC publication What We Know About Nonoxynol-9 for HIV and STD Prevention stated that “CDC does not recommend using spermicide alone to prevent HIV infection.”

2001: WHO, in collaboration with CONRAD, convened a meeting to review the available literature regarding N-9’s safety and effect- iveness as a spermicide and a microbicide.

2004: SSL International halted production of its Durex brand condoms that were lubricated with N-9 because of a decrease in sales to public health outlets and a projected decrease in retail sales.

1998: CDC’s 1998 STD treatment guidelines stated that “vaginal spermicides offer no protection against HIV infection, and spermicides are not recommended for HIV prevention . . . the consistent use of condoms, with or without spermicidal lubricant or vaginal application of spermicide is recommended.”

2002: The final results of the presentation at the International AIDS conference held in Durban, South Africa, were published in The Lancet.

1998: An FDA Consumer magazine article, “Condoms: Barriers to Bad News,” stated that “The spermicide nonoxynol-9, used in some condoms, has been shown to be effective as a contraceptive, and may reduce the risk of transmitting certain STDs. But the spermicide has not been proven to prevent sexual transmission of HIV.”

2002: CDC published a report in MMWR stating, “Sexually active women should consider their individual HIV/STD infection risk when choosing a method of contraception. Providers of family planning services should inform women at risk for HIV/STDs that N-9 contraceptives do not protect against these infections.”

Comments from the Department of Health and Human Services

GAO Contact and Staff Acknowledgments

GAO Contact

Acknowledgments

In addition to the person named above, Kelly DeMots, Krister Friday, Mary Giffin, and Mary Reich made key contributions to this report.