Weight loss is a common side effect of
Effexor® (
venlafaxine hydrochloride). On average, people lose about one to two pounds when they begin taking Effexor. However, it is possible for people to lose large amounts of weight while taking Effexor. Although weight loss may be a desirable side effect for some people, too much weight loss can be a problem.
Why Does Effexor Cause Weight Loss?
It is not entirely clear why Effexor can cause weight loss. Effexor can often cause loss of appetite, nausea, and
diarrhea, which may contribute to weight loss. Often, these side effects go away with time. Let your healthcare provider know if these side effects do not go away over time. Also, since weight gain can be a
depression symptom, treating the depression can lead to weight loss.
If you are taking Effexor and weight loss becomes bothersome, let your healthcare provider know.
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