A member asked:

How long does prozac (fluoxetine) take to show effect, and what are withdrawals like?

A doctor has provided 1 answer
Dr. Alan Ali answered

Specializes in Psychiatry

Prozac (fluoxetine): Depending on what it's used for & dosage, onset is 1 week & up to 4 weeks. Withdrawal can include upset stomach, nervousness, sleep pattern changes, headaches.

Answered 2/13/2013

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