Compare Paxil vs. Effexor

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

Paxil (paroxetine)

Prescription only

Effexor (venlafaxine)

Prescription only
Improves mood and anxiety.

Paxil (paroxetine) is effective for treating depression and anxiety, but causes more unwanted side-effects than other medicines that work like it.

3.4/ 5 average rating with 694 reviewsforPaxil
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
  • Available in a cheaper, generic form.
  • Is convenient and can take once a day.
  • 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
  • More likely to decrease your sexual appetite and delay or prevent ejaculation than other antidepressants.
  • Like most antidepressants, Paxil (paroxetine) has a high risk of suicidal thoughts and behavior when used in children and adolescents.
  • May not be appropriate for you if you are elderly or suffer from dementia.
  • 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.
Used for
Dosage forms
  • Pill
  • Extended release pill
  • Liquid
  • Pill
  • Extended release
Price
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Reviews
694 reviews so far
52%
saidit'sworth it
39%
saiditworked well
24%
saidit'sa big hassle

Have you used Paxil (paroxetine)?

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
29possible side effects
  • Abnormal ejaculation
    28%
  • Nausea
    25%
  • Weakness
    22%
  • Drowsiness
    22%
  • Difficulty sleeping
    21%
  • Decreased sexual appetite
    12%
  • Dizziness
    11%
  • Sweating
    9%
  • Dry mouth
    9%
  • Diarrhea
    9%
  • Tremor
    9%
  • Female genital disorder
    9%
  • Decreased appetite
    8%
  • Nervousness
    8%
  • Constipation
    5%
  • Anxiety
    5%
  • Yawning
    5%
  • Painful period
    5%
  • Impotence
    5%
  • Indigestion
    4%
  • Gas
    4%
  • Muscle pain
    4%
  • Impaired concentration
    4%
  • Throat inflammation
    4%
  • Abnormal vision
    4%
  • Trauma
    3%
  • Agitation
    3%
  • Vomiting
    2%
  • Muscle twitching
    2%
See more detailed side effects
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
  • Suicidal thoughts or behavior
    • Age 24 years or younger
  • High levels of serotonin (Serotonin Syndrome)
    • Using other medications that affect serotonin levels
  • Withdrawal
    • Stopping Paxil (paroxetine) suddenly
  • Increased bleeding risk
    • Taking other blood-thinning drugs
  • Sexual dysfunction
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