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Doctor insights on: How Will I Know Prozac Is Working I Have Taken It Two Weeks

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How will I know Prozac (fluoxetine) is working? I have taken it two weeks.

How will I know Prozac (fluoxetine) is working? I have taken it two weeks.

2 to 6 Weeks: Your medication is working when your treatment goals for are being met. For example, if your your goals include being motivated to get out of bed each morning and performing certain tasks: then you would find it easier to get up each day and easier to complete the tasks. Most patients begin to feel better after two weeks. But for some it may take up to six weeks. Be patient and talk to your md. ...Read more

Dr. Heidi Fowler
1,053 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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Is taking two 10mg Prozac (fluoxetine) the same as one 20mg tablet? I was recently on twenty and got but on ten but it's not working as well so can I take two 10mg

Is taking two 10mg Prozac (fluoxetine) the same as one 20mg tablet? I was recently on twenty and got but on ten but it's not working as well so can I take two 10mg

Ask your doctor: Yes, 2 pills of 10mg Prozac (fluoxetine) is equivalent to 1 pill of 20mg. But, please keep your treating physician in the loop, let her or him know that you've restored your Prozac (fluoxetine) dose to 20mg daily. ...Read more

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How long will it take for Prozac (fluoxetine) to begin working?

How long will it take for Prozac (fluoxetine) to begin working?

Prozac (fluoxetine): Usually after one week you would see some response, then within 4-5 weeks for full efficacy at the therapeutic dose. ...Read more

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I took Prozac 10mg for two days. How long will it take to get out of my system?

Up to 5 wks: It is difficult to determine the exact duration prozac will stay in the system, because people metabolize prozac at different rates. The longest it would probably stay in the system is 5 wks, (this is the "safe" washout time when there is no risk for drug interaction with MAO inhibitors.). Prozac has a half life of 7-9 days (pretty large margin there). but that does not mean it is out in 14-18 d. ...Read more

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I just started taking Prozac (fluoxetine) yesterday, when should it start working?

I just started taking Prozac (fluoxetine) yesterday, when should it start working?

Generally 2-4 weeks: Most antidepressants take 2-4 weeks. Some people, esp with panic attacks may notice worsening before improvement. If there is no improvement after 4 weeks adjustments or med changes would be indicated. Tell your prescriber if you feel worse initially as there might be something to help. ...Read more

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I am on Prozac (fluoxetine) 20 mg from 20 days. How I can find out if its working or not and how much does it need to start working?

I am on Prozac (fluoxetine) 20 mg from 20 days. How I can find out if its working or not and how much does it need to start working?

INCREASE DOSE: If there is no clinical change after a week, the dr should try a dose increase (up to 80mg). If there is no antidepressant effect, a switch to another med is called for. ...Read more

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My 10mg Prozac (fluoxetine) dosage has stopped working after 2 yrs. What usually happens next after this event? Will I need to take more and more as time passes?

My 10mg Prozac (fluoxetine) dosage has stopped working after 2 yrs. What usually happens next after this event? Will I need to take more and more as time passes?

Depression, Prozac (fluoxetine): I understand your concern.
Prozac is for depression and anxiety. 10mg/day is your maintenance dose for about 2 years.
It is likely that you have become used to it if you did not have Therapy, and there may have been new stressor in your life.

Be Captain of your thoughts, feelings, symptoms and actions.
See Psychiatrist for Therapy for stress in your life, Medication if needed. Relaxation, Yoga. ...Read more

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I am currently on Prozac (fluoxetine) and it seems to be not working. I need a new ssri?

I am currently on Prozac (fluoxetine) and it seems to be not working. I need a new ssri?

It depends.: Hard to answer you without knowing your dose and how long you've been taking it. If you have simple depression and have been 20 mg for full 6weeks, with no results, I would move on to new med. But I usually go over the symptoms my patient described at our first visit and ask where things stand now. They are often amazed to see they are somewhat better. Then just up dose a bit to do some better. ...Read more

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I'm currently taking Prozac (fluoxetine) 40mg, I just got put on adipex can these two drugs be taken together?

Yes: These drugs are usually fine together. Be on the lookout for an increased amount of confusion, agitation, dilated pupils, headaches, twitching muscles, shivering or goose bumps, and diarrhea. If you should notice that, let your doctor know. ...Read more

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Had my Prozac (fluoxetine) prescribed for anxiety stopped working or do I need to change the dose?

Had my Prozac (fluoxetine) prescribed for anxiety stopped working or do I need to change the dose?

Chk dose., Time used: Some patient may experience increase energy or activation early after initiating of txmt. Onset of action usually delayed 2-4 wees. If your dose has been adjusted gradually and the medication is not working with 6 to 8 weeks, it may require a dosege incras or it may not be working at all. In some cases it continues for many years to prevent relapse of symptoms.
Consider re-visiting psychiatrist. ...Read more

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Can you give me advice? I have been taking Prozac (fluoxetine) for about two months, and that alcohol makes Prozac (fluoxetine) less effective?

Can you give me advice? I have been taking Prozac (fluoxetine) for about two months, and that alcohol makes Prozac (fluoxetine) less effective?

Alcohol: Alcohol is a no no with psychiatric medications for the most part. It does make it less effective. Alcohol is a depressant so it can worsen depression. Alcohol is always stronger then the medicine. ...Read more

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I just started taking prozac, (fluoxetine) and it worked for me, then I smoked pot and it stopped working, if I don't smoke pot anymore will it work again?

I just started taking prozac, (fluoxetine) and it worked for me, then I smoked pot and it stopped working, if I don't smoke pot anymore will it work again?

Dump the Pot: Marijuana use makes psychiatric disorders such as depression and anxiety worse, and can increase the risk of developing psychosis. "it's like pouring gas on a fire" as a colleague of mine once put it. There is a good chance that within a couple of weeks of stopping marijuana, you will feel better. Btw pot smoking is more carcinogenic than cigarettes. ...Read more

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Prozac (fluoxetine) day 9. Anxiety feels worse than before. I can not focus on anything. Will this subside? And does this mean it's working?

Prozac (fluoxetine) day 9. Anxiety feels worse than before. I can not focus on anything. Will this subside? And does this mean it's working?

Yes with time: Antidepressant usually take two weeks for levels to stabilize make a consistent change in mood.
Good luck. Follow up with your doctor if it does not get to work. ...Read more

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Took 20mg of Prozac (fluoxetine) for 8 mos. Been off for two weeks. Can I now take st. Johns wort. Didn't like side effects of prozac (fluoxetine)?

Probably: Prozac (fluoxetine) will stay in your system for 4-6 wks & st johns is a weak maoi which theoretically could b a problem but st. John's is so weak I've had pts who've taken it with their antidepressants including Prozac (fluoxetine) with no problems. ...Read more

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Used 20 mg of Prozac (fluoxetine) for 4 months. Now cutting it down to 10 mg a day (doctors advice) for two weeks. Possible to have side effects by quiting now?

Used 20 mg of Prozac (fluoxetine) for 4 months. Now cutting it down to 10 mg a day (doctors advice) for two weeks. Possible to have side effects by quiting now?

Doubtful: Going from Prozac (fluoxetine) 20mg daily to 10mg daily should not produce any untoward effects. However, if you think tapering is too fast for you, discuss your side effects with treating physician. Good luck. ...Read more

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My girlfriien said she was on Prozac (fluoxetine) temporarily. That was a year ago. Now she takes two pills every morning. Sex life is a dud. If a woman can't come?

Antidotes: There are several things out there that help as antidotes to the sexual dysfunction caused by serotonin reuptake inhibitors like prozac (fluoxetine). Suggest to your girlfriend that she ask the doctor who prescribed her the Prozac (fluoxetine) for suggestions for antidotes, and if the psychiatrist is not familiar with these, suggest she someone with psychopharmacology specialized experience. ...Read more

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Am I required to start Prozac (fluoxetine) immediately? I have a core exam in two days. I've been depressed for years and never tried meds before.

Am I required to start Prozac (fluoxetine) immediately? I have a core exam in two days. I've been depressed for years and never tried meds before.

Prozac (fluoxetine): It does have side effects like all meds. It takes weeks to becomerecomment effective aiding serotonin system. If taking exams don't recommend starting 2 days before because don't know if side effects will affect ur performance. ...Read more

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My daughter is currently taking  Prozac (10mg), she has now been prescribed Concerta (18mg).  Is it ok to combine these two medications. She is 14  ?

Same Dr for Rx's?: There is an increased risk of some serious Prozac (fluoxetine) side effects so there needs to be coordination and dose adjustment if needed. Always be sure each Dr is fully aware of all other Rx's. Please do consider a good adolescent psychologist for best outcomes too. Therapy improves effects and lessens need for drugs. ...Read more

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Been taking Prozac (fluoxetine) for two weeks. 20 mg. Recently experiencing insomnia. Took it before and don't remember this effect. Does it go away?

It should: This may be a component of anxiety or major depression, and should improve with continued ssri use. Also, Prozac along with zoloft tends to be more activating, so if you are taking it at night, try taking your Prozac first thing in the morning. Alternatively, you could try to switch to a more sedating ssri like Celexa or paxil (paroxetine). Either way, you should discuss with your doctor. ...Read more

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Suffering from dep/anx. Was on effexor (venlafaxine) stoppped working dr upped dose got BP and tapered to prozac its not working after 8 weeks. I am scared?

Suffering from dep/anx. Was on effexor (venlafaxine) stoppped working dr upped dose got BP and tapered to prozac its not working after 8 weeks. I am scared?

Seek CBT therapy: I hope you can find a good CBT therapist that you feel good with to help you as the search for an effective pill proceeds. If you find one, it will optimize the benefits and if not, it will do the best job for you. You'll learn how to handle things and manage the symptoms and understand yourself better. Best! ...Read more

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I stopped taking Prozac (fluoxetine) two weeks ago and have been eating five to eight thousand calories a day due to the change in saratonin levels. Will it stop?

Comments: This entire class of drugs can profoundly affect appetite and cause weight gain. This may not stop so easily, and you may well need to consult a physician to assist you. This is just one additional reason why NONE of my pts are ever given Prosac!! ...Read more

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My son, 18, is taking 80 mg of Prozac and 75 mg of Wellbutrin for OCD. He is relapsing. He has been on this for two years. What are some choices?

My son, 18, is taking 80 mg of Prozac and 75 mg of Wellbutrin for OCD. He is relapsing. He has been on this for two years. What are some choices?

Decisions: 18 is a challenging age. Your son can consent for treatment as he is of age. Important to clarify whether or not he is still taking his meds as many teens stop when they are of consenting age. Cognitive behavioral therapy is also an effective form of treatment for OCD either alone or in conjunction with meds. Follow up with psychiatrist for any changes in medication, additional therapies. ...Read more

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If I'm on 10 mg of prozac, is it okay to take one or two ibuprofen PM's with it?

If I'm on 10 mg of prozac, is it okay to take one or two ibuprofen PM's with it?

Not really. There is: An increased likelihood of causing dizziness, confusion and disorientation as well as affecting the clotting system and potentially causing bleeding. Try a glass of warm milk instead. ...Read more

Dr. Alan Ali
774 Doctors shared insights

Prozac (Definition)

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