mg caps for a week and then two caps a day the following week. From what I have read Effexor is one of the better drugs for anxiety. If the drug has been administered for longer than 1 week, the dose should be tapered over 7 to 10 days to prevent a withdrawal syndrome. 1. About venlafaxine. Venlafaxine is a type of antidepressant often used to treat depression. It is also The usual starting dose of venlafaxine is 75mg a day. I was told by my doctor it would be in my system for learn more here additional 48 hours. Some of the possible negative effects include: men might have problems with getting an erection, or with ejaculating women might have some vaginal bleeding both men and women might find they don't reach orgasm the same way as before link may have a lower sex drive Any mild sexual side effects might pass after the first couple of weeks. I found that I can't take it at bedtime. Forensic Science International. Is anyone still on this forum?