What Does Prozac Feel Like When It Starts Working?

What Does Prozac Feel Like When It Starts Working
Bottom Line –

Within the first one to two weeks, most people feel lower levels of anxiety, restlessness or tiredness with Prozac treatment. Your sleep, energy and appetite may improve over the first month and you may have a better focus on daily tasks. A depressed mood can take up to 8 weeks to fully respond. Research has shown that over half of patients (55.5%) who respond to Prozac treatment for depression will start responding by the second week. Prozac can be an “activating” antidepressant and can lead to side effects in the first few weeks that may impact your response, such as insomnia (trouble sleeping), anxiety or nervousness. In most people, these side effects will start to subside in a few weeks. Sexual side effects can be ongoing if not addressed by your healthcare provider.

: What does Prozac feel like when it starts working?

How does Prozac make you feel in the beginning?

Warnings and safety – If you have taken more fluoxetine than the dosage recommended by the doctor who prescribed it to you, you must get medical help immediately – even if you do not feel any different, While taking fluoxetine, some people may think about hurting themselves or taking their own lives.

  • You must go straight to hospital with your medicine if you have any of these thoughts.
  • Fluoxetine can also cause rare but serious side effects: allergic reactions (difficulty breathing, swelling of your face or throat, itching skin lumps), rashes or blotches on your skin, and a rare condition called serotonin syndrome (see ‘Side Effects’).

Go to a hospital with your medicine if you get any of these symptoms. Do not take fluoxetine if you have taken a monoamine oxidase inhibitor antidepressant (MAOI) like moclobemide, phenelzine, isocarboxazid or tranylcypromine in the last 14 days. Stopping fluoxetine suddenly can sometimes cause withdrawal effects, which are usually mild, but for a few people can be severe.

  1. Also, if you stop taking fluoxetine too soon, the chance that your mental health symptoms will come back increases.
  2. See your doctor if you want to stop fluoxetine or have withdrawal effects after stopping it.
  3. You might not be able to concentrate very well, and may feel sleepy, in the first few days after taking fluoxetine.

Do not drive a car, ride a bike or operate machines until you see how this affects you. If you are pregnant, or thinking of becoming pregnant, please read the pregnancy section (see ‘Side Effects’) because fluoxetine may affect the developing baby.

Can you feel the effects of Prozac immediately?

How Long Does it Take for Prozac to Work? – Prozac helps the brain increase its levels of serotonin, a brain chemical that helps to balance mood. Prozac does not have a rapid or immediate effect on mood, but once it does achieve consistent levels in the body, it is a highly effective medication.

Many patients see some improvement on Prozac right away, but most people notice the antidepressant effects after 2-4 weeks of daily use. Prozac has a longer half-life than many other antidepressants at 2-4 days, which means it remains in your body longer than some other medications. The half-life is the amount of time it takes for a medication to decrease in your body by 50%.

This long half-life makes it easier to stop Prozac than some other antidepressants, which can cause withdrawal symptoms when you stop them abruptly. The metabolite, or substance, that Prozac is broken down into has an even longer half-life of 7-9 days, which means it may stay in your system for a few weeks after you stop taking it.

How long does it take to feel better after starting Prozac?

For depression, Prozac may start to improve symptoms within 2 weeks. But it may take 4 to 8 weeks to have its full effect. Common side effects of Prozac include nausea, trouble sleeping, and drowsiness. More serious side effects include serotonin syndrome, suicidal thoughts, and allergic reactions.

How quickly does Prozac work for anxiety?

The lowdown – Prozac (active ingredient: fluoxetine) is a commonly prescribed SSRI for anxiety. Prozac takes between two and six weeks to take effect and needs to be continued for at least six months to a year. It is generally considered a safe medication for long-term use and is not addictive.

What are Prozac eyes?

A 12 year old boy with history of depression and obesity was referred for an overnight sleep study to assess for sleep apnea. A representative 30-second epoch of the sleep study is presented below. What medication is this patient likely taking? Figure 1 Figure 1 displays a 30-second tracing of stage N2 sleep with two rapid eye movements (red arrow) and a run of slow rolling eye movements (black arrows) on the electrooculographic (EOG) channel consistent with the use of Fluoxetine or another selective serotonin reuptake inhibitor (SSRI).

Note that despite the rapid eye movements, the K complex (white arrow) seen on electroencephalogram (EEG) as well as the presence of muscle tone on chin electromyogram (EMG) indicates the eye movements are not part of stage REM sleep. As a comparison, Figure 2 provides a representative example of normal REM sleep in this patient with muscle atonia on chin EMG.

The common occurrence of slow-rolling eye movements during non-rapid eye movement (NREM) sleep in patients taking Fluoxetine has led to this finding being referred to as “Prozac Eyes”, The oculomotor movements in patients on Fluoxetine are accompanied by an increase in myoclonic activity.

The eye movements occur during all stages of NREM sleep and can occur with other SSRIs, such as Paroxetine, Sertraline, and Citalopram. In one study, 36% of patients taking an SSRI were found to have abnormal eye movements during NREM Sleep, The eye movements are thought to be due to a potentiation of serotonergic neurons found in the pontine raphe nuclei, those neurons normally inhibit brainstem “omnipause neurons”, which, in turn, inhibit saccadic eye movements.

Thus, the result is a disinhibited release of saccades, This finding may persist after cessation of SSRI use. In one study, 78% of patients with NREM eye movements were taking an SSRI at the time of the study and an additional 6% had taken an SSRI in the past,

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Armitage, R., G. Emslie, and J. Rintelmann, The effect of fluoxetine on sleep EEG in childhood depression: a preliminary report. Neuropsychopharmacology, 1997.17 (4): p.241-5. Armitage, R., M. Trivedi, and A.J. Rush, Fluoxetine and oculomotor activity during sleep in depressed patients. Neuropsychopharmacology, 1995.12 (2): p.159-65. Ashikawa, H., N. Furuya, and T. Yabe, Effects of serotonin, GABA and glycine on the activity of pause neurons during vestibular nystagmus in the cat. Acta Otolaryngol, 1991.111 (6): p.999-1005. Schenck, C.H., et al., Prominent eye movements during NREM sleep and REM sleep behavior disorder associated with fluoxetine treatment of depression and obsessive-compulsive disorder. Sleep, 1992.15 (3): p.226-35. Geyer, J.D., et al., Antidepressant medications, neuroleptics, and prominent eye movements during NREM sleep. J Clin Neurophysiol, 2009.26 (1): p.39-44.

Figure 2

Do you feel better the first day of Prozac?

Bottom Line –

Within the first one to two weeks, most people feel lower levels of anxiety, restlessness or tiredness with Prozac treatment. Your sleep, energy and appetite may improve over the first month and you may have a better focus on daily tasks. A depressed mood can take up to 8 weeks to fully respond. Research has shown that over half of patients (55.5%) who respond to Prozac treatment for depression will start responding by the second week. Prozac can be an “activating” antidepressant and can lead to side effects in the first few weeks that may impact your response, such as insomnia (trouble sleeping), anxiety or nervousness. In most people, these side effects will start to subside in a few weeks. Sexual side effects can be ongoing if not addressed by your healthcare provider.

: What does Prozac feel like when it starts working?

Can Prozac work in the first week?

A journey on Prozac – The usual starting dose of fluoxetine for adults is 20mg per day, Your provider may adjust the dose gradually, depending on your body’s response to the medication. Depending on your needs and tolerability, your provider may recommend taking Prozac at a specific time of the day.

It’s usually beneficial and more effective to take antidepressants at the same time every day. Keep in mind that it can take up to four weeks for the full effects of the medication to be felt, so your first day taking Prozac might not be indicative of how the rest of the treatment will go. Some people experience side effects such as drowsiness, nausea, or dry mouth when they first start taking Prozac.

These side effects typically lessen over time as the body adjusts to the medication. Fluoxetine may also cause more severe side effects. These include changes in weight or appetite, trouble urinating, internal bleeding, and seizures. If an individual experiences any of these side effects, they should seek medical help. What Does Prozac Feel Like When It Starts Working The duration of treatment is different for everyone. Some people take antidepressants for a few months. Others might be on it for life.

What are the positive effects of Prozac?

How Does Prozac Work for Anxiety? – Prozac is widely considered an effective, first-line treatment option for people who suffer from certain types of anxiety disorders. By increasing the availability of serotonin in the brain, the drug helps improve mood, regulate emotions, increase quality sleep, and boost appetite.

What are the positive effects of fluoxetine?

Fluoxetine is a type of antidepressant known as a selective serotonin reuptake inhibitor (SSRI). It’s often used to treat depression, and sometimes obsessive compulsive disorder and bulimia, It works by increasing the levels of serotonin in the brain.

What are the side effects of Prozac the first week?

What Are The Possible Side Effects Of Fluoxetine? – Common side effects Headache, nausea, diarrhea, dry mouth, increased sweating, feeling nervous, restless, fatigue, or having trouble sleeping (insomnia). These will often improve over the first week or two as you continue to take the medication.

  1. Sexual side effects, such as problems with orgasm or ejaculatory delay often do not diminish over time.
  2. Rare/serious side effects Low sodium blood levels (symptoms of low sodium levels may include headache, weakness, difficulty concentrating and remembering), teeth grinding, angle closure glaucoma (symptoms of angle closure glaucoma may include eye pain, changes in vision, swelling or redness in or around eye), serotonin syndrome (symptoms may include shivering, diarrhea, confusion, severe muscle tightness, fever, seizures, and death), seizure, QT prolongation and ventricular arrhythmia including Torsades de Pointes (changes in the electrical activity of your heart; symptoms may include fast, slow or irregular heartbeat, shortness of breath, and dizziness or fainting) SSRI antidepressants including fluoxetine may increase the risk of bleeding events.

Combined use of aspirin, nonsteroidal anti-inflammatory drugs (e.g., ibuprofen, naproxen), warfarin, and other anti-coagulants may increase this risk. This may include symptoms such as gums that bleed more easily, nose bleed, or gastrointestinal bleeding.

What not to take with fluoxetine?

Precautions – Drug information provided by: Merative, Micromedex ® It is important that your doctor check your progress at regular visits, to make sure this medicine is working properly. Blood tests may be needed to check for unwanted effects. Do not take fluoxetine with a monoamine oxidase (MAO) inhibitor (eg, isocarboxazid, linezolid, methylene blue injection, phenelzine, selegiline, tranylcypromine ).

  • Do not start taking fluoxetine during the 2 weeks after you stop a MAO inhibitor and wait 5 weeks after stopping fluoxetine before you start taking a MAO inhibitor.
  • If you take them together or do not wait the proper amount of time, you may develop confusion, agitation, restlessness, stomach or intestinal symptoms, a sudden high body temperature, an extremely high blood pressure, or severe convulsions.

Do not take thioridazine (Mellaril®) with fluoxetine and wait 5 weeks after stopping fluoxetine before you start taking thioridazine. Do not use pimozide (Orap®) with fluoxetine. Using these medicines together can cause very serious heart problems. Fluoxetine may cause a serious condition called serotonin syndrome if taken together with some medicines.

  • Do not use fluoxetine with buspirone (Buspar®), fentanyl (Abstral®, Duragesic®), lithium (Eskalith®, Lithobid®), tryptophan, St.
  • John’s wort, amphetamines, or some pain or migraine medicines (eg, rizatriptan, sumatriptan, tramadol, Frova®, Imitrex®, Maxalt®, Relpax®, Ultram®, Zomig®).
  • Check with your doctor first before taking any other medicines with fluoxetine.

Fluoxetine may cause some teenagers and young adults to be agitated, irritable, or display other abnormal behaviors. It may also cause some people to have suicidal thoughts and tendencies or to become more depressed. Some people may have trouble sleeping, get upset easily, have a big increase in energy, or start to act reckless.

If you or your caregiver notice any of these unwanted effects, tell your doctor right away. Let the doctor know if you or anyone in your family has bipolar disorder (manic-depressive) or has tried to commit suicide. Do not suddenly stop taking this medicine without checking first with your doctor. Your doctor may want you to gradually reduce the amount you are using before stopping it completely.

This will decrease the chance of having withdrawal symptoms such as agitation, breathing problems, chest pain, confusion, diarrhea, dizziness or lightheadedness, fast heartbeat, headache, increased sweating, muscle pain, nausea, restlessness, runny nose, trouble sleeping, trembling or shaking, unusual tiredness or weakness, vision changes, or vomiting.

  • Tell your doctor right away if you develop a rash or hives, swelling of the face, eyes, or mouth, or trouble breathing after taking this medicine.
  • This medicine may increase your risk for bleeding problems.
  • Make sure your doctor knows if you are also taking other medicines that thin the blood, such as aspirin, nonsteroidal antiinflammatory agents, also called NSAIDs (eg, diclofenac, ibuprofen, naproxen, Advil®, Aleve®, Celebrex®, Voltaren®), or warfarin (Coumadin®, Jantoven®).
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Hyponatremia (low sodium in the blood) may occur with this medicine. Check with your doctor right away if you have confusion, difficulty concentrating, headaches, memory problems, weakness, and unsteadiness. Contact your doctor right away if you have dizziness, fainting, or a fast, pounding, or uneven heartbeat.

  1. Make sure your doctor knows if you have ever had a heart rhythm problem, such as QT prolongation, or if you or a family member has had a heart attack, heart failure, low blood pressure, or a stroke.
  2. The use of alcohol is not recommended in patients who are taking fluoxetine.
  3. This medicine may affect blood sugar levels.

If you are diabetic and notice a change in the results of your blood or urine sugar tests, check with your doctor. This medicine may cause some people to become drowsy or less able to think clearly, or to have poor muscle control. Make sure you know how you react to fluoxetine before you drive, use machines, or do anything else that could be dangerous if you are not alert and well able to control your movements.

Check with your doctor right away if you have decreased interest in sexual intercourse, delayed or inability to have an orgasm in women, inability to have or keep an erection in men, or loss in sexual ability, desire, drive, or performance. These could be symptoms of sexual dysfunction. Do not take other medicines unless they have been discussed with your doctor.

This includes prescription or nonprescription (over-the-counter ) medicines and herbal (eg, St. John’s wort) or vitamin supplements.

Is 10mg of Prozac enough for anxiety?

The starting dose of Prozac for panic disorder is usually 10 mg per day. For other conditions, it ranges between 20 mg to 60 mg per day. Your healthcare provider may increase the dose every several days to weeks. The maximum dose is usually between 60 mg to 80 mg per day.

Will Prozac make me calm?

Does Prozac calm you? – This is a somewhat complex question. Prozac works for anxiety largely by helping manage symptoms. It’s a daily maintenance medication, and Prozac is not designed to be highly effective at stopping a panic attack that’s in progress.

Should I still feel anxious on Prozac?

Anxiety and nervousness In addition to insomnia, anxiety and nervousness are other activating side effects of Prozac. These side effects usually happen early in treatment and then improve with time. But for some people, they can be more intense and cause panic attacks.

Why does Prozac increase anxiety at first?

Antidepressants such as Prozac and Zoloft offer relief for over 100 million people around the world who have depression, but with a potentially serious side effect. In the first few weeks, feelings of fear and anxiety can get worse. Now, scientists believe they have identified what happens in the brain to cause this, according to research published in Nature,

Selective serotonin reuptake inhibitors (SSRIs) are used to treat anxiety, depression, and related conditions. Around 10 percent of people in the United States use them, including 1 in 4 women in their 40s and 50s. Serotonin, a neurotransmitter, is the “happy hormone” thought to boost feelings of well-being.

Abnormally low levels of serotonin have been linked to depression. SSRIs are thought to improve mood by boosting serotonin activity in the brain. But serotonin is not always a bed of roses. In the early days of treatment, it can increase levels of fear and anxiety and even suicidal thinking in some younger people.

Does Prozac make you tired or give you energy?

Tiredness – Taking Prozac can cause tiredness. This was a common side effect in studies of the drug. However, Prozac can affect people differently. Both tiredness and insomnia (trouble sleeping) are possible side effects of the drug. So it’s possible that Prozac could either make you sleepy or keep you awake.

  • Tips for managing Tiredness with Prozac can lead to problems with thinking, coordination, or judgment.
  • For this reason, it’s recommended that you avoid driving until you know how Prozac affects you.
  • You’ll likely know how Prozac will affect you after taking several doses of the drug.
  • If you’re concerned about tiredness while you’re taking Prozac, we encourage you to talk with your medical professional.

For some conditions Prozac is used to treat, it’s recommended to take the drug in the morning. But if taking Prozac makes you tired, it may be best to take your dose at bedtime. Your medical professional can recommend when it’s best for you to take Prozac.

What are peoples views on Prozac?

User Reviews for Prozac. Prozac has an average rating of 7.2 out of 10 from a total of 1,169 reviews on Drugs.com.65% of reviewers reported a positive experience, while 20% reported a negative experience.

What visual changes with Prozac?

Antidepressants, Anti-anxiety Meds & Your Eyes Written by Last modified on August 6, 2018 One in five Americans use some type of antidepressant or anti-anxiety medication. These powerful drugs can have numerous side effects, many related to your eyes and vision. What Does Prozac Feel Like When It Starts Working How are the Eyes Affected? One of the most common eye-related side effects of antidepressants and anti-anxiety medications is blurred vision. Selective serotonin reuptake inhibitors (SSRIs) like Zoloft, Prozac, Lexapro, etc. directly affect the pupil and ciliary muscle function of the eye and can make it difficult to focus on near objects.

If the patient already has an eye condition such as or, these side effects can worsen the conditions and potentially cause significant vision problems. And speaking of dry eye, antidepressants can actually cause it. Drugs such as citalopram, fluoxetine, fluvoxamine, alprazolam and sertraline dry-out fluids and mucus membranes in the body, leading to dry eye.

They can also cause dry mouth, which has its own consequences for dental health. Strangely enough, one of the consequences of this dry eye is over-stimulation of reflex tear production, resulting in excess tear formation. Certain mental health medications can also lead to significant changes in coordinated eye movements, creating issues for depth perception.

Patients can experience vision changes caused by shifting of the lens, difficulty with accommodation (affecting your ability to focus across varying distances) and other abnormal eye movements. Specifically, lithium (which is often used to treat bipolar disorder) is known to cause eye movement-related side effects, in addition to causing dry eye.

Researchers are now growing more interested in the connection between antidepressant and anti-anxiety medications, and eye disease. A number of studies are now evaluating their impact on the development of glaucoma and, Unlike the other side effects, (which are well documented) this potential connection is in the investigational stages.

  1. Future data could create new questions and concerns for patients regularly taking these medications.
  2. What Should You Do? The best course of action is to ensure your eye doctor is fully aware of all medications you are taking.
  3. Such communication is key because if your doctor doesn’t have this knowledge, it could lead to confusion about managing your vision.
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For example, if you’ve recently started taking an antidepressant or anti-anxiety medication and are seeking a change to your eyeglasses/contacts prescription, your eye doctor will want to wait before fulfilling this request. Making a change in your prescription may or may not fix the eye problem if it is related to the medication(s).

  1. Your doctor may wait for the symptoms to subside, stabilize or worsen, before prescribing treatment.
  2. Monitoring these vision changes over time is often best before making treatment decisions, and waiting could save you time and money.
  3. No need to pay for a new prescription, and new glasses or contacts when your vision is not stable due to medications.

In addition to sharing this information with your eye doctor, it’s also important that any vision changes are shared with your prescribing doctor. If the ocular side effects are severe, your prescribing doctor may look to alter the dose, or switch to a different medication.

Is Prozac better at night?

How to take it – You’ll usually take fluoxetine once a day, with or without food. You can take fluoxetine at any time, but it’s best to stick to the same time every day. If you have trouble sleeping, try taking it in the morning.

Can Prozac work after 4 days?

How long does it take for Prozac to work? When taking Prozac, it may take up to 4 to 6 weeks for your symptoms to fully improve. Some people may start to feel better in 1 to 2 weeks, while others may need 8 weeks or longer to feel the effects. In a clinical research study, over half of the people who responded to treatment with Prozac had a positive benefit by the second week.

  1. Symptoms like anxiety, restlessness or fatigue may start to improve in the first 1 to 2 weeks.
  2. Your sleep, energy and appetite may improve over the first 4 weeks and you may have a better focus on daily tasks.
  3. Continue to take your medication as directed by your healthcare provider.
  4. A depressed mood can take up to 8 weeks to fully respond.

If you do not feel any relief at all from your symptoms after 2 to 4 weeks, you may need a dose adjustment or medication change. Contact your doctor, who can assess your response to treatment if you feel your treatment is not working. Related : (generic name: fluoxetine) is in a group of antidepressants called selective serotonin reuptake inhibitors (SSRIs).

major depressive disorder obsessive compulsive disorder (OCD) panic disorder bulimia nervosa (an eating disorder) premenstrual dysphoric disorder (PMDD).

Is Prozac better at night or morning?

Insomnia – Some selective serotonin reuptake inhibitors (SSRIs), the class of antidepressants most often used, can disrupt sleep for some people and would be best taken in the morning. For example, the manufacturer of Prozac (fluoxetine) recommends it be taken in the morning because it can make some people feel more energized, especially at the beginning of treatment.

Effexor (venlafaxine) is sometimes recommended to be taken in the morning because it may interfere with sleep when taken at night. However, when Prozac is given in combination with Zyprexa (olanzapine)—a combination called Symbyax —as a therapy for treatment-resistant depression, it can cause sleepiness, so then it’s recommended to be taken in the evening.

Paxil (paroxetine) is generally taken in the morning in order to prevent sleeplessness at night. However, it may be given at bedtime if it is found to cause drowsiness in the person taking it. Wellbutrin (bupropion) is another antidepressant that is recommended to be taken in the morning in order to prevent insomnia at night.

Why do I feel worse after starting Prozac?

9. Your Depression Worsens – “If your depression symptoms get worse as soon as you start taking an antidepressant, or they get better and then very suddenly get worse, it’s a sign that the depression medication isn’t working properly, and you should see your healthcare professional right away,” Hullett says.

Does Prozac make you feel more anxious in the beginning of taking it?

– Prozac may cause side effects, and some may be serious. This isn’t a complete list of all the side effects of Prozac, just some of the most common. Ask a pharmacist or doctor for a full list of side effects. Side effects generally go away after a few days or a few weeks, but if they’re bothersome or serious, call a doctor to discuss your treatment options.

What are the positive effects of Prozac?

How Does Prozac Work for Anxiety? – Prozac is widely considered an effective, first-line treatment option for people who suffer from certain types of anxiety disorders. By increasing the availability of serotonin in the brain, the drug helps improve mood, regulate emotions, increase quality sleep, and boost appetite.

Can I stop Prozac after 1 week?

Precautions and Warnings – If you are taking Prozac or other antidepressants, never stop taking the medication suddenly without working with your doctor. Antidepressants take time to build up in your system, but also stay at higher concentrations for weeks even after you start to taper your dose.

Stopping suddenly can result in serious side effects or symptom relapses. Pay close attention to your dosage. Taking too much Prozac increases the risk of overdose and serious complications. Taking too little Prozac when you are weaning off can lead to withdrawal symptoms. Changing the dosage of Prozac may increase the risk for suicidal thoughts and behaviors.

Anyone taking Prozac or other antidepressants should be monitored closely for changes in behavior, worsening symptoms, or thoughts of self-harm. Any signs should be immediately reported to a healthcare provider. Prozac lasts for a long time in your body, even as you start to take less.

It can take several weeks for changes to be reflected in your body. Do not to suddenly discontinue Prozac or any other antidepressant, unless an allergic reaction occurs. Prozac has many potential food and drug interactions, complications that occur when the medication is taken at the same time as other medications or foods.

Interactions may also occur with herbal supplements, vitamins, and minerals. Always tell your doctor about everything that you take, even occasionally, such as over-the-counter medications, multivitamins, illicit drugs, alcohol, or other supplements or natural health products.

AlcoholMAOIs (monoamine oxidase inhibitors)LinezolidPimozideTriptansTricyclicsLithiumOther SSRIs SNRIs AmphetaminesAnticonvulsantsAntipsychoticsTramadolTryptophanSt. John’s wort

Prozac may be riskier for certain populations:

People who are pregnant : Prozac is a Class C pregnancy drug. It should only be used if the benefit outweighs the potential risk. No studies exist that have assessed the safety of Prozac in the first trimester and it is not fully understood how it impacts labor and delivery. In some cases, your doctor may feel that continuing Prozac represents the safest scenario for the pregnant person’s health. Tell your doctor if you are pregnant or plan to become pregnant.

People who are breastfeeding : Nursing people should not take Prozac because it is excreted in breastmilk.

Older adults : Prozac has a longer half-life, and higher concentrations of the drug may increase the risk for low sodium, which is a serious electrolyte imbalance.

People with liver problems : People who have cirrhosis should not take Prozac or should be treated with lower, less frequent doses. Prozac is metabolized in the liver. Decreased liver function increases the half-life, leading to longer plasma concentrations of the drug.