Duration of effectiveness is more significant than speed, Slowinski said. Patients still have to pay attention to foreplay and getting turned on again. Don't complain about Viagra taking an hour - you can have a lot of fun in an hour. Tests also suggest that Cialis and vardenafil may have fewer side effects, even though they're chemically similar to Viagra. Like Viagra, however, neither is expected to be safe for patients using nitrate-containing medications, such as nitroglycerine.
Side effects are also a central issue with the use of testosterone as a libido medication.
In both sexes, levels of this natural hormone are related to levels of sexual desire. But too much testosterone can hurt a woman's cholesterol profile and cause masculinizing side effects, such as facial hair. It can also harm fetuses if taken by pregnant women. That is partly why it has not been approved as a treatment for low libido. When used off-label for that purpose, it is usually given to women whose testosterone levels have dropped after menopause or following surgery to remove the ovaries.