About: Risperidone (Risperdal) is a dopamine antagonist.
Evidence: One clinical trial found a 50% reduction in stuttering.
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Risperdal can cause a situation called hyperprolactinemia. For guys, what this can translate into is impotence, loss of libido, an inability to achieve spontaneous erections, weak erectile quality, and difficulty maintaining an erection. The situation can lead some men to lactate, and, supposedly, can lead to hypogonadism (your testicles stop producing testosterone) and azoospermia (your body stops producing viable sperm). All of the anti-psychotics seem to cause some kind of sexual dysfunction (in women and in men), but the sexual side effects of Risperdal seem to be the most severe, because of the receptors Risperdal targets. I've been on Risperdal for two months and am going to get off as soon as possible. Ask your doctor for something else if he suggests putting you on Risperdal. Also, research the web…you'll see what I'm talking about. Pretty scary stuff.