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A member asked:

Is lower back pain a side effect of effexor (venlafaxine)? i have been on it for about three weeks and noticed the pain for the past two weeks.

A doctor has provided 1 answer
Dr. Susan Rhoads answered

Specializes in Family Medicine

Rarely: Severe muscle stiffness is a rare side effect. Muscle cramps have been reported as well as urinary tract symptoms but of uncertain frequency. See your doctor and discuss this with him and see if testing is in order to rule out kidney or muscle problems from Effexor, (venlafaxine) or from anything else.

Answered 10/17/2014

3.6k views

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