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Doctor insights on: How Long Does It Take To Begin Feeling The Effects Of Prozac

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How long does it take to begin feeling the effects of prozac (fluoxetine)?

How long does it take to begin feeling the effects of prozac (fluoxetine)?

Depends: The effects of a medication like Prozac (fluoxetine) depend on why you are taking it. In cases of depression, a positive effect can be seen in as little as 1-2 weeks. However, for anxiety disorders, especially hard to treat ones like ocd, effects sometimes take up to 2 months to be seen. ...Read more

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Dr. Heidi Fowler
1,014 doctors shared insights

Fluoxetine (Definition)

Fluoxetine (brand prozac) is an antidepressant in the class known as serotonin selective reuptake inhibitors aka ssris. Fda approved in 1987 for the treatment of major depressive disorder. Subsequently approved for obsessive compulsive disorder, bulimia nervosa, panic disorder, and premenstrual dysphoric disorder. Significantly safer and much better ...Read more


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I just started prozac (fluoxetine). I have been feeling funny. How long before Prozac (fluoxetine) takes effect and what are the side effects if prozac (fluoxetine)?

I just started prozac (fluoxetine). I have been feeling funny. How long before Prozac (fluoxetine) takes effect and what are the side effects if prozac (fluoxetine)?

Please tell doc: I don't know what you mean by funny, but sometimes at the beginning of treatment, anxiety symptoms can appear. These can feel strange until you get used to the medication. Other typical symptoms include headaches, gastrointestinal upset, rare suicidal thinking in your age group, and a manic reaction. Tremors can also occur. Rashes are rare. Refer to the pharmacy handout for further info. ...Read more

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How long does 10mg of Prozac (fluoxetine) take to get into your blood system to feel effects?

How long does 10mg of Prozac (fluoxetine) take to get into your blood system to feel effects?

Prozac (fluoxetine): The time to onset of action of an antidepressant, including prozac, (fluoxetine) depends upon a number of factors including the condition being treated. That being said, you can generally expect one to two weeks to start to notice the clinical effect and 4-6 weeks to safely evaluate the full effect of any particular dose in the treatment of depression. Side effects, if present, can be experienced sooner. ...Read more

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I fotgot to take my prozac (fluoxetine).for 2 weeks,i now am feeling anxious is this from forgeting my med. I have been on it for years?

I fotgot to take my prozac (fluoxetine).for 2 weeks,i now am feeling anxious is this from forgeting my med. I have been on it for years?

Missing Prozac (fluoxetine): Yes, if you have been off it for 2 weeks that is enough time for it to have been eliminated from your body. Did you have feelings of anxiety and being anxious before you started Prozac (fluoxetine)? If so, then that does suggest that the anxious feelings you have now are due to having stopped it. ...Read more

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Took Prozac (fluoxetine) 10 mg for 2 weeks, was extremely tired and feeling cold, have not taken it for the past 5 days. How long until it is out of my system?

Took Prozac (fluoxetine) 10 mg for 2 weeks, was extremely tired and feeling cold, have not taken it for the past 5 days. How long until it is out of my system?

Two weeks to clear: It usually takes prozac (fluoxetine) two weeks to clear from the body. In your case, the prozac (fluoxetine) should be gone in about 9 more days. Hope this helps. Best wishes! ...Read more

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Could I take my 20 mg of Prozac (fluoxetine) and 5 mg of aripiprazole at night instead of in the morning due to feeling really drowsy?

Could I take my 20 mg of Prozac (fluoxetine) and  5 mg of aripiprazole  at  night instead of in the morning due to feeling really drowsy?

Timing of medication: It's fine to take those medications at night if you feel they are making you sleepy. The important thing is to try to develop a schedule of taking them around the same time every day, whether it's morning or night. It might be the aripiprazole that is making you sleepy rather than the prozac; you might want to try that medication at bedtime first and leave the prozac in the morning as a trial. ...Read more

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Just started prozac (fluoxetine).. 8 days, now on 20mg. Feeling a sensation of not being able to take a deep, satisfying breath. Is this a side effect?

Just started prozac (fluoxetine).. 8 days, now on 20mg. Feeling a sensation of not being able to take a deep, satisfying breath. Is this a side effect?

Depression, Prozac (fluoxetine): Prozac (fluoxetine) is a medication for treatment of depression. Sensation of not being able to take a deep satisfying breath is not a common side effect of prozac (fluoxetine). Prozac (fluoxetine) may cause anxiety, or you may have anxiety before you started Prozac (fluoxetine) could be the explanation for your concern. ...Read more

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I'm scared my tongue feels werid like it's num or some. My gums been feeling like it getting tight.I also take prozac (fluoxetine).What should I do?

I'm scared my tongue feels werid like it's num or some.  My gums been feeling like it getting tight.I also take prozac (fluoxetine).What should I do?

Maybe allergy: You may have an allergy to Prozac (fluoxetine) that could be serious. You should call your doctor immediately, and consider stopping prozac (fluoxetine). However, if you have been on Prozac (fluoxetine) a long time, this is less likely. It could be something else neurologic, rheumatologic or even electrolyte. . If any shortness of breath , or progression of symptoms, you should go to the er. ...Read more

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After i take my Prozac (fluoxetine) in the morning i feeling the pill gets stuck and then i get awful burning in my throat is this normal?

It can be: Some people have trouble with the shape or consistency of various pills. There are many generics for fluoxetine (prozac) both pills and capsules. Have your physician or pharmacy get you a different pill or capsule. ...Read more

Dr. Alan Ali
734 doctors shared insights

Prozac (Definition)

Prozac is a serotonin reuptake blocker which is a kind of ...Read more