6 doctors weighed in:

For how long does Effexor (venlafaxine) cause insomnia?

6 doctors weighed in
Dr. Peter Forster
Psychiatry
5 doctors agree

In brief: Short term

There are at least three effects that venlafaxine (effexor) has on sleep - it has a short term effect increasing agitation and insomnia that lasts usually only a few days, it has a long term effect improving sleep by treating depression (which has a big negative effect on sleep), and it has a small long term effect reducing rem or dream sleep.
For most people #2 is the most important.

In brief: Short term

There are at least three effects that venlafaxine (effexor) has on sleep - it has a short term effect increasing agitation and insomnia that lasts usually only a few days, it has a long term effect improving sleep by treating depression (which has a big negative effect on sleep), and it has a small long term effect reducing rem or dream sleep.
For most people #2 is the most important.
Dr. Peter Forster
Dr. Peter Forster
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