3 doctors weighed in:

How long until side effects stop with Effexor (venlafaxine) 75mg?

3 doctors weighed in
2 doctors agree

In brief: Days

The half life (how long it takes for half of the drug to be metabolized) of the parent compound is 5 hours and the active metabolite is 11 hours.
It takes about 5 half lives for the drug to be fully metabolized. Thus it should be less than 3 days before the drug is completely metabolized and thus the effects to be gone. I hope this helps.

In brief: Days

The half life (how long it takes for half of the drug to be metabolized) of the parent compound is 5 hours and the active metabolite is 11 hours.
It takes about 5 half lives for the drug to be fully metabolized. Thus it should be less than 3 days before the drug is completely metabolized and thus the effects to be gone. I hope this helps.
Dr. Donald McCarren
Dr. Donald McCarren
Thank
Get help from a real doctor now
Dr. Bennett Machanic
Board Certified, Neurology
49 years in practice
56M people helped
Continue
108,000 doctors available
Read more answers from doctors