Compare Prozac vs. Klonopin

Head-to-head comparisons of medication uses, side effects, ratings, and more.

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Prozac (fluoxetine)

Prescription only

Klonopin (Clonazepam)

Prescription only
Improves mood and helps you relax.

Prozac (fluoxetine) is good for treating depression and anxiety. It's more energizing than other antidepressants, so it may not be the best choice for people who have trouble sleeping.

3.5/ 5 average rating with 1319 reviewsforProzac
Controls seizures and helps you relax.

Klonopin (Clonazepam) is okay for occasional or short-term use (up to 4 weeks) for anxiety, and to treat seizures. Less severe withdrawal symptoms compared to similar drugs.

3.8/ 5 average rating with 767 reviewsforKlonopin
Upsides
  • Effectively treats a variety of mental health conditions such as depression, OCD, and panic disorder.
  • It's more energizing than other antidepressants, so it's good for people who have low energy.
  • Might be a good option for treating children with depression and/or OCD.
  • Doesn't have effects on the heart unlike other antidepressants so it may be a better treatment choice for older people.
  • Can cause a significant amount of weight loss which is an added benefit for those who are overweight or obese.
  • Effective at relieving short-term anxiety and sleeplessness.
  • Can be used together with antidepressants to manage anxiety disorders. Especially helpful for anxiety symptoms while you wait for an antidepressant to kick in (it can take several weeks).
  • Can be used alone or with other medicines to treat seizures.
  • Less severe withdrawal symptoms compared to other benzodiazepines.
Downsides
  • Takes at least 1 to 2 weeks to kick in and can take up to 12 weeks for maximum effect. Prozac (fluoxetine) tends to take more time to start working compared to similar alternatives.
  • Can lower your sex drive.
  • Can increase the risk of suicidal thoughts and/or behavior in those age 24 or younger.
  • You may need to try out several different antidepressants before you find the one that works for you.
  • Can cause memory problems, drowsiness, dizziness, and confusion.
  • Can be habit-forming, so it's not typically used for long-term treatment, or for people who've had problems with drug or alcohol abuse.
  • Most people find that it gets less effective over time.
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Used for
Dosage forms
  • Pill
  • Delayed-release pill
  • Liquid
  • Pill
  • Dissolving tablet
Price
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Reviews
1319 reviews so far
62%
saidit'sworth it
40%
saiditworked well
16%
saidit'sa big hassle

Have you used Prozac (fluoxetine)?

Leave a review
767 reviews so far
70%
saidit'sworth it
52%
saiditworked well
14%
saidit'sa big hassle

Have you used Klonopin (Clonazepam)?

Leave a review
Side effects
22possible side effects
  • Inability to sleep
    33%
  • Nausea
    28%
  • Lack of energy
    21%
  • Anxiety
    15%
  • Sleepiness
    13%
  • Tremor
    13%
  • Nervousness
    11%
  • Yawn
    11%
  • Indigestion
    10%
  • Sore throat
    10%
  • Dry mouth
    9%
  • Flu syndrome
    8%
  • Diarrhea
    8%
  • Loss of appetite
    8%
  • Sweating
    8%
  • Impotence
    7%
  • Abnormal ejaculation
    7%
  • Sinus infection
    6%
  • Lower sex drive
    5%
  • Abnormal dreams
    5%
  • Rash
    4%
  • Widening of blood vessels
    2%
See more detailed side effects
19possible side effects
  • Somnolence
    37%
  • Dizziness
    8%
  • Upper Respiratory Tract Infection
    8%
  • Depression
    7%
  • Fatigue
    7%
  • Coordination Abnormal
    6%
  • Ataxia
    5%
  • Memory Disturbance
    4%
  • Sinusitis
    4%
  • Influenza
    4%
  • Nervousness
    3%
  • Dysmenorrhea
    3%
  • Dysarthria
    2%
  • Intellectual Ability Reduced
    2%
  • Rhinitis
    2%
  • Coughing
    2%
  • Pharyngitis
    2%
  • Constipation
    2%
  • Allergic Reaction
    2%
See more detailed side effects
Risks and risk factors
  • Suicidal thoughts or behavior
    • Age 24 or younger
  • Serotonin syndrome
    • Antidepressants
    • Lithium
    • Ultram
    • Imitrex
    • Remeron
    • Lexapro
    • Dilaudid
    • St. John's Wort
  • Skin rash
  • Weight loss
    • People with an eating disorder
  • Increased bleeding risk
    • Taking NSAIDS or blood-thinning drugs
  • Abnormal heart rhythm
    • People with heart rhythm problems or a family history of them
    • Low potassium level
    • Low magnesium level
    • Recent heart attack
    • Using other drugs that affect heart rhythm
    • Overdose
    • People with liver problems
See more detailed risks and warnings
  • Tolerance and dependence
    • Taking more than the prescribed dose
    • Taking longer than 4 weeks
    • History of drug abuse
  • Withdrawal
    • Long-term use
  • Pregnancy
  • Driving impairment
    • Alcohol
    • Taking other medicines that make you less alert
  • Memory problems
See more detailed risks and warnings