Compare Klonopin vs. Valium vs. Xanax

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

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Klonopin (clonazepam)

Prescription only

Valium (diazepam)

Prescription only
Controls seizures and helps panic attacks.

Klonopin (clonazepam) can be used for immediate relief of panic attacks and seizures, but is not intended for long-term management.

3.8/ 5 average rating with 767 reviewsforKlonopin
Helps you relax.

Valium (diazepam) is effective for occasional or short-term use for anxiety and muscle spasm. Compared to similar drugs, Valium (diazepam) acts very quickly but can have interactions with other medicines.

3.8/ 5 average rating with 976 reviewsforValium
Upsides
  • More people who took Klonopin (clonazepam) were free of panic attacks, compared to people who did not take Klonopin (clonazepam).
  • Klonopin (clonazepam) works quickly, within the hour.
  • Can be used together with antidepressants to manage panic disorder.
  • Klonopin (clonazepam) lasts longer and has less severe withdrawal symptoms compared to other similar medicines.
  • Valium (diazepam) effectively relieves anxiety and muscle spasms.
  • Valium (diazepam) has less severe withdrawal symptoms compared to other similar drugs.
  • Works very quickly.
  • Available in generic.
Downsides
  • Klonopin (clonazepam) can cause memory problems, drowsiness, dizziness, and confusion.
  • Klonopin (clonazepam) can be habit-forming, so is not typically used for long-term treatment.
  • May require higher doses of Klonopin (clonazepam) over time to establish the same seizure control.
  • Use of Valium (diazepam) can cause memory problems, drowsiness, dizziness, and confusion.
  • Valium (diazepam) can be habit-forming, so it's not typically used for long-term treatment.
  • Most people find that their body will get used to Valium (diazepam) levels and they may need higher doses over time to achieve the same effect.
  • People with severe liver problems should not take Valium (diazepam). Several drugs can also interfere with how Valium (diazepam) works.
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Used for
Dosage forms
  • Pill
  • Dissolving tablet
  • Pill
  • Liquid
Price
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Reviews
767 reviews so far
70%
saidit'sworth it
52%
saiditworked well
14%
saidit'sa big hassle

Have you used Klonopin (clonazepam)?

Leave a review
976 reviews so far
70%
saidit'sworth it
53%
saiditworked well
15%
saidit'sa big hassle

Have you used Valium (diazepam)?

Leave a review
Side effects
4possible side effects
  • Drowsiness
    37%
  • Depression
    7%
  • Abnormal coordination
    6%
  • Loss of full control of bodily movements
    5%
See more detailed side effects
The Valium (diazepam) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Sedation, respiratory depression, coma and death
    • Taking with opioids
    • Drinking alcohol
  • Dependence and withdrawal
    • Taking high dosage
    • Taking long-term
    • History of drug abuse
  • Driving impairment
    • Drinking alcohol
    • Taking other medicines that make you less alert
  • Suicidal behavior and ideation
See more detailed risks and warnings
  • Decreased breathing from use with opioids
    • Taking Valium (diazepam) with opioids, drugs or alcohol
    • Using Valium (diazepam) for a longer duration and at high doses
  • Dependence and withdrawal
    • History of substance abuse
    • Taking with alcohol or drugs
    • Taking long-term
    • Taking a higher dose
    • Stopping Valium (diazepam) suddenly
  • Driving impairment
    • Alcohol use with Valium (diazepam)
    • Taking other medicines that make you less alert
  • Drug interactions
    • Current liver problems
    • Taking Tagamet, ketoconazole, Prozac, Prilosec
See more detailed risks and warnings