Compare Pristiq vs. Effexor

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

Pristiq
(desvenlafaxine)

Effexor
(venlafaxine)

Improves mood. Pristiq (Desvenlafaxine) is basically the same medication as Effexor, which is cheaper because it's available as a generic.Improves mood and helps you relax. Effexor (Venlafaxine) is good for treating depression and anxiety. It may work when other antidepressants haven't, but it's more likely to cause side effects and withdrawal symptoms than other antidepressants.
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Coupons for Pristiq
Best available price for 30 (50mg) tablets of pristiq
Coupons for Effexor
Best available price for 60 (75mg) tablets of venlafaxine
Reviews & ratings
Filter group. All currently selected
Filter group. All currently selected
4.81Pristiq
Reviews for Pristiq
53%
of people (All ages) say Pristiq is worth it
49%
say it works well
23%
say it's a big hassle
196 reviews
Have you used Pristiq (desvenlafaxine)?
Worth itNot sureNot worth it
Reviews for Effexor
62%
-9% worse vs. Pristiq
51%
-2% worse vs. Pristiq
23%
Same vs. Pristiq
577 reviews
Have you used Effexor (venlafaxine)?
Worth itNot sureNot worth it
Side effects
PristiqEffexor
  • Nausea 16%
  • Dry mouth 8%
  • Sleep difficulty 6%
  • Excessive sweating 7%
  • Dizziness 5%
  • Drowsiness 5%
  • Constipation 5%
  • Decreased appetite 6%
  • Fatigue 3%
  • Anxiety 3%
More Pristiq side effects »
  • Nausea 26%
  • Headache 1%
  • Drowsiness 14%
  • Dry mouth 11%
  • Dizziness 11%
  • Sleep difficulty 8%
  • Abnormal ejaculation 16%
  • Constipation 8%
  • Nervousness 17%
  • Muscle weakness 14%
More Effexor side effects »
How it works
PristiqEffexor
Pristiq (Desvenlafaxine) is a serotonin and norepinephrine reuptake inhibitor (SNRI) antidepressant. It increases serotonin and norepinephrine activity in the brain, which regulates mood.Effexor (Venlafaxine) is a serotonin and norepinephrine reuptake inhibitor (SNRI) antidepressant. It increases serotonin and norepinephrine activity in the brain, which regulate mood.
Type of medication
PristiqEffexor
Prescription onlyPrescription only
Available as
PristiqEffexor
  • Extended release
  • Pill
  • Extended release
Used for
PristiqEffexor
Risk factors for serious side effects
PristiqEffexor
  • Age 24 years or younger
  • Using other medications that affect serotonin
  • Stopping Pristiq (Desvenlafaxine) suddenly
  • History of high blood pressure
  • Taking other blood-thinning drugs
Detailed Pristiq (desvenlafaxine) risks & warnings »
  • Age 24 years or younger
  • Using other medications that affect serotonin
  • Stopping Effexor (Venlafaxine) suddenly
  • History of high blood pressure
  • Taking other blood-thinning drugs
Detailed Effexor (venlafaxine) risks & warnings »
Pregnancy

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

Sex
PristiqEffexor
No sex related info.
  • Can cause sexual side effects like low libido and an inability to orgasm or ejaculate.
Upsides and benefits
PristiqEffexor
  • Effective at relieving symptoms and lowering relapse rates for depression.
  • Six out of ten people who use an antidepressant for the first time find that it works for them.
  • Effective at relieving depression and anxiety symptoms.
  • Lowers relapse rates of depression.
  • Causes more sleepiness than other antidepressants, so it's good for people who have trouble sleeping.
  • Six out of ten people who use an antidepressant for the first time find that it works for them.
  • Might work when other antidepressants haven't worked since it affects two chemicals in the brain that impact your mood. Many other antidepressants affect only serotonin, but not norepinephrine too.
Downsides and risks
PristiqEffexor
  • Similar to Effexor, without any extra benefits in clinical studies.
  • Can cause sexual side effects (usually low libido or the inability to have an orgasm or ejaculate).
  • Not available in generic form, so it's more expensive.
  • Like most antidepressants, can cause higher risk of suicidal thoughts and behavior for people age 24 and younger.
  • The first antidepressant you try doesn't always work or it can cause side effects you really don't like. You might need to try a few different medications until you find one that works for you.
  • Can cause sexual side effects like low libido and an inability to orgasm or ejaculate.
  • Not the best option for people with high blood pressure.
  • Overdosing on this medication could be fatal.
  • It's more likely to cause nausea and vomiting or make you feel sick if you miss a dose than other antidepressants. Also causes more sleepiness than others.
  • Like most antidepressants, it can cause a higher risk of suicidal thoughts and behavior for people younger than 24.
  • The first antidepressant you try doesn't always work or it can cause side effects you really don't like. You might need to try a few different medications until you find one that works for you.
Tips from our pharmacists for people taking the medication
PristiqEffexor
  • Takes 8 to 12 weeks to see full effects on mood.
  • Can cause sweating and high blood pressure.
  • Stop taking slowly to avoid withdrawal symptoms.
  • Tell your doctor if you notice sudden mood changes or unusual thoughts.
  • Takes about 8 to 12 weeks to see the medication's full effects on your mood.
  • You can take the extended-release form once a day with food either in the morning or in the evening at about the same time each day.
  • Extended-release capsules should be swallowed whole. If you can’t swallow pills, open the capsule, sprinkle it on a spoonful of applesauce and then swallow it without chewing.
  • Stop taking it slowly to avoid getting withdrawal symptoms.
  • Tell your doctor if you notice sudden mood changes or unusual thoughts.
Learn more
More about PristiqSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Pristiq (desvenlafaxine)?
Worth itNot sureNot worth it
More about EffexorSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Effexor (venlafaxine)?
Worth itNot sureNot worth it