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Doctor insights on: What To Expect The First Week On Prozac

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Dr. Heidi Fowler
1,036 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've been on prozac (fluoxetine) for 10 weeks now - 10mg for the first 7, and 20mg for the past 3. Helped anxiety at first, but not anymore. Stick it out longer?

I've been on prozac (fluoxetine) for 10 weeks now - 10mg for the first 7, and 20mg for the past 3. Helped anxiety at first, but not anymore. Stick it out longer?

Or go higher: Takes Prozac (fluoxetine) 4-6 was to start working (most SSRIs 2-3 was) dosage range 20-80 mg-- If you felt it helped initially I'd say stay with it. ...Read more

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I just started Prozac (fluoxetine) (10mg) half dose for my first 2 weeks. I've noticed my right eye only is opening halfway is this related to Prozac (fluoxetine) in anyway?

UNLIKELY: I'VE BEEN PRESCRIBING PROZAC (fluoxetine) FOR 40 YEARS AND THIS IS A SIDE EFFECT I'VE NEVER RUN INTO. IT MAY POSSIBLY BE THE PROZAC (fluoxetine), BUT PROBABLY NOT. BE SURE BY STOPPING THE PROZAC (fluoxetine) (IT WILL BE OUT OF YOUR SYSTEM IN ABOUT A MONTH). OTHERWISE A NEUROLOGICAL CONSULT WOULD BE APPROPRIATE. ...Read more

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I am switching from Zolft to Prozac (fluoxetine). I am on my first day at 75mg. Will take this 5 days then decrease by 25mg until none. When can I start Prozac (fluoxetine)20mg?

Check with doctor: It would be safe to start the prozac when you get to 25 mg of zoloft (sertraline). However, it is best that you check with the doctor prescribing these medicines as they know your complete history and other medications. ...Read more

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Is there a way to go off cymbalta (duloxetine) by just switching completely over to Prozac the first day and continuing with prozac?

Is there a way to go off cymbalta (duloxetine) by just switching completely over to Prozac the first day and continuing with prozac?

To avoid: Ssri discontinuation symptoms while making the change - a cross titration could be useful. In other words, reducing the dose of one while increasing the dose of the other. And doing this progressively until you are off the first medication and you get to the target dose of the second medication. ...Read more

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Tuesday was my last dose of 50mg of Paxil after eighteen years on, Thursday morning was my first dose of Prozac 60mg, would withdraw start today sat.?

Tuesday was my last dose of 50mg of Paxil after eighteen years on, Thursday morning was my first dose of Prozac 60mg, would withdraw start today sat.?

Can be immediate: In particular after being on the Paxil for so long, the serotonin discontinuation can be immediate and very intense. Even if another serotonin agent is substituted - like Prozac - it typically does not reduce symptoms. It might be best to very gradually taper the Paxil even after instituting the Prozac. ...Read more

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Upped Prozac (fluoxetine) from 20mg to 40mg, in order to help getting of Valium. Experiencing more anxiety first 2 days, but this is normal right? Could it help?

Upped Prozac (fluoxetine) from 20mg to 40mg, in order to help getting of Valium. Experiencing more anxiety first 2 days, but this is normal right?  Could it help?

Medication Effects: I commend you wanting to get off Valium if it had become habit forming. Of course you deserve relief from Anxiety. Valium is for Anxiety. Prozac (fluoxetine) is for depression, it can help with anxiety. Increasing Prozac (fluoxetine) from 20mg/day to 40mg/day is likely causing anxiety. See a Psychiatrist for diagnosis, need for medication, dose, benefits and side effects, Therapy, Breathing Relaxation, and Visual Imagery. ...Read more

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I have been taking Prozac (fluoxetine) for my depression for the first couple of months i was even more unstable and very suicidal. What would have caused this?

I have been taking Prozac (fluoxetine) for my depression for the first couple of months i was even more unstable and very suicidal. What would have caused this?

Antidepressants: Not all antidepressants are for everyone. Your psychiatrist will help you select the right medication for you. We can not pinpoint what the exact cause was in your particular case. A black box warning exist for some antidepressants, mentioning situation like the one you describe. Discuss it with your dr. ...Read more

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First few days on 20 mg of Prozac (fluoxetine) cause drowsiness (i.E., feeling sleepy during the day despite 8-9 hours of sleep). Could this subside eventually?

First few days on 20 mg of Prozac (fluoxetine) cause drowsiness (i.E., feeling sleepy during the day despite 8-9 hours of sleep). Could this subside eventually?

Side effects usually: Subside in 1-3 weeks. If you take the medication in the morning and feel sleepy during the day, try taking it at night and see if that reduces the daytime sleepiness. If it does not subside your prescriber may reduce the dose for a while and increase later when the side effect subsides. If it becomes intolerable and does not subside then an alternative medication may be necessary. Best regards. ...Read more

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Dr. Alan Ali
757 doctors shared insights

Prozac (Definition)

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