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A 47-year-old member asked:

How can prozac (fluoxetine) cause weight gain?

4 doctor answers13 doctors weighed in
Dr. Evan Altman
Psychiatry 19 years experience
It is possible: Fluoxetine is an ssri anti-depressant, anti-anxiety medication that can cause weight changes as a possible side effect. In most of my patients, weight changes have been minor. However, some patients report larger weight changes, including more significant weight gain or weight loss. If you are gaining weight and concerned about it, talk to your doctor.
Dr. Diane Minich
Family Medicine 37 years experience
Side effect: of the medication. In most cases the weight gain is minimal.
Dr. Alan Koenigsberg
Psychiatry 42 years experience
Decreases fidgeting: Some patients do gain weight. A lot of patients with depression have significant anxiety, and fidget all day long. This can burn 100 -200 calories daily. When they are well treated, no longer experiencing anxiety, and stop fidgeting, they may slowly put on 1 or 2 pounds a month because they are burning fewer calories. It's like no longer walking a mile daily while eating the same amount.
Dr. James Saccomando
Psychiatry 20 years experience
Maybe: Weight gain is listed as a possible side effect, but weight loss is listed too. Depression itself can also cause weight loss or weight gain.

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Similar questions

A 32-year-old member asked:

Does fluoxetine cause weight gain?

1 doctor answer4 doctors weighed in
Dr. Evan Altman
Psychiatry 19 years experience
It is possible: Fluoxetine is an ssri anti-depressant, anti-anxiety medication that can cause weight changes as a possible side effect. In most of my patients, weight changes have been minor. However, some patients report larger weight changes, including more significant weight gain or weight loss. If you are gaining weight and concerned about it, talk to your doctor.
A 38-year-old member asked:

How often could Prozac (fluoxetine) cause weight gain?

1 doctor answer1 doctor weighed in
Dr. Charles Barnhart
Psychiatry 48 years experience
Infrequently: I can't give you exact statistics but more people don't gain weight than do. But if you are one who craves sweets, ice cream and chocolates on prozac, (fluoxetine) talk to your doc about an alternative drug. Gaining weight rarely helps depression, does it?
A 49-year-old member asked:

Can somebody tell me how can Prozac (fluoxetine) cause weight gain?

1 doctor answer3 doctors weighed in
Dr. Shariq Refai
Psychiatry 13 years experience
Usually: Usually medications dont cause weight gain they cause increased appetite. Sometimes with antidepressants, depression causes appetite loss, so when you take antidepressants and start feeling better you start eating more and then blame it on the medicine.
A 33-year-old member asked:

Can fluoxetine cause weight gain and is it a safe drug for anxiety?

1 doctor answer5 doctors weighed in
Dr. Alan Ali
Dr. Alan Alianswered
Psychiatry 32 years experience
Prozac (fluoxetine): Yes it is safe, & in some it can affect weight.

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Last updated Sep 30, 2020
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