Compare Valium vs. Effexor

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

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Valium (diazepam)

Prescription only

Effexor (venlafaxine)

Prescription only
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
Improves mood and helps you relax.

Effexor (venlafaxine) is good for treating depression and anxiety, but it can cause more withdrawal symptoms if you stop suddenly compared to other antidepressants.

3.7/ 5 average rating with 577 reviewsforEffexor
Upsides
  • 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.
  • Effexor (venlafaxine) effectively treats depression, anxiety, and panic disorder.
  • Effexor (venlafaxine) causes more sleepiness than other antidepressants, so it's beneficial for people who have trouble sleeping.
  • Effexor (venlafaxine) might work when other antidepressants haven't worked since it affects two chemicals in the brain that impact your mood.
  • Effexor (venlafaxine) has several uses, which may be good for people with multiple conditions.
  • Effexor (venlafaxine) is available in generic, which is cheaper.
Downsides
  • 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.
  • Effexor (venlafaxine) can cause side effects such as decreased libido and increased blood pressure.
  • Like most antidepressants, it can cause a higher risk of suicidal thoughts and behavior for people aged 24 years or younger.
  • Compared to other antidepressants, it's more likely to cause unpleasant withdrawal symptoms if you suddenly stop taking it and can causes more sleepiness.
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Used for
Dosage forms
  • Pill
  • Liquid
  • Pill
  • Extended release
Price
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Reviews
976 reviews so far
70%
saidit'sworth it
53%
saiditworked well
15%
saidit'sa big hassle

Have you used Valium (diazepam)?

Leave a review
577 reviews so far
62%
saidit'sworth it
51%
saiditworked well
23%
saidit'sa big hassle

Have you used Effexor (venlafaxine)?

Leave a review
Side effects
The Valium (diazepam) FDA package insert doesn’t have numbers about how common side effects are.
39possible side effects
  • Nausea
    37%
  • Headache
    25%
  • Drowsiness
    23%
  • Dry mouth
    22%
  • Dizziness
    19%
  • Difficulty sleeping
    18%
  • Constipation
    15%
  • Nervousness
    13%
  • Weakness
    12%
  • Sweating
    12%
  • Abnormal ejaculation/orgasm
    12%
  • Loss of appetite
    11%
  • Diarrhea
    8%
  • Infection
    6%
  • Vomiting
    6%
  • Anxiety
    6%
  • Blurred vision
    6%
  • Impotence
    6%
  • Indigestion
    5%
  • Tremor
    5%
  • Abnormal dreams
    4%
  • Chills
    3%
  • Rash
    3%
  • Gas
    3%
  • Stiff muscles
    3%
  • Prickling/burning sensation
    3%
  • Yawn
    3%
  • Increased urination
    3%
  • Chest pain
    2%
  • Trauma
    2%
  • Increased blood pressure
    2%
  • Increased heart rate
    2%
  • Decreased libido
    2%
  • Agitation
    2%
  • Confusion
    2%
  • Thinking abnormal
    2%
  • Changes in taste
    2%
  • Ringing in the ears
    2%
  • Dilation of pupils
    2%
See more detailed side effects
Risks and risk factors
  • 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
  • Suicidal thoughts or behavior
    • Age 24 years or younger
  • Serotonin syndrome
    • Taking tricyclic antidepressants, lithium, tramadol, fentanyl, amphetamines, certain headache medications (triptans), St. John's Wort
  • Withdrawal
    • Stopping Effexor (venlafaxine) suddenly
  • Increased bleeding
    • Taking other blood-thinning drugs (including aspirin, NSAIDs such as Advil, warfarin)
  • Increased blood pressure
    • Bipolar disorder
      • History of bipolar disorder
      • At risk for bipolar disorder
    See more detailed risks and warnings