This article is from the Impotence FAQ, by Sine Nomine llama@drizzle.com with numerous contributions by others.
Many people do this. The best approach would seem to be to change
doses slowly and watch for side effects. Given that the most painful
side effects are dose-related, it makes sense to be very very cautious
about changing dosages without input from your doctor. Some people
have found that a lower dose works better for them than a higher dose.
 
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