Some of the following have been shown in clinical trials to have negative effects on sperm count, testosterone levels, ejaculation, sexual performance, etc. Other medications listed here may impair male fertility potential in theory based upon their mechanism of action. The following list should not be considered all-inclusive. If you are taking specific medications and are concerned about their side effects be sure to consult your physician. In most situations they are used because of their potent anti-inflammatory properties.
Glucocorticoids are available as inhalers, creams, ointments, pills and injections.
Cyclophoshamide, Methotrexate, Alkylating agents etc. These medications are designed to prevent replication or proliferation of the cancer cells. Often times these medications act not only upon the cancer cell but also upon normal cells. These drugs may act upon the cells that are responsible for producing sperm leading to a decreased sperm count in these patients. Men concerned about these possible effects should consult their doctor prior to therapy to discuss sperm cryopreservation.