Pristiq vs. Escitalopram
See how Pristiq and Escitalopram compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Pristiq is an SNRI that starts and stays at its full 50 mg dose, while escitalopram is an SSRI that requires titration from 10 mg to 20 mg over two weeks.
Escitalopram is FDA-approved for both major depressive disorder and generalized anxiety disorder, while Pristiq is approved only for major depressive disorder in adults.
Generic escitalopram typically costs a fraction of Pristiq's list price, making it the more affordable option for most patients paying out of pocket.
Pristiq vs. Escitalopram Drug Summary
Pristiq
Pristiq (desvenlafaxine) is a serotonin-norepinephrine reuptake inhibitor (SNRI) used to treat major depressive disorder in adults. It comes as an extended-release tablet taken once daily; the 50 mg starting dose is also the maintenance dose, so no titration is needed.
Escitalopram
Escitalopram is an SSRI used to treat major depression in adults and adolescents 12 and older, plus generalized anxiety disorder in adults. It is taken once daily as a tablet or liquid, starting at 10 mg for one week then increasing to 20 mg.
Pristiq vs. Escitalopram Side Effects
Pristiq
Escitalopram
Pristiq vs. Escitalopram Dosage
Pristiq
Escitalopram
| STAGE | DOSE | WHEN |
| Starting dose | 50 mg once daily | Day 1 onward |
| Maximum dose | 50 mg once daily | Same as starting |
| Dose changes | None | Fixed dose |
| STAGE | DOSE | WHEN |
| Starting dose | 10 mg once daily | Week 1 |
| Maximum dose | 20 mg once daily | Week 2 onward |
| Dose changes | 1 increase | Every week |
Pristiq
| STAGE | DOSE | WHEN |
| Starting dose | 50 mg once daily | Day 1 onward |
| Maximum dose | 50 mg once daily | Same as starting |
| Dose changes | None | Fixed dose |
Escitalopram
| STAGE | DOSE | WHEN |
| Starting dose | 10 mg once daily | Week 1 |
| Maximum dose | 20 mg once daily | Week 2 onward |
| Dose changes | 1 increase | Every week |
Pristiq vs. Escitalopram Indications
Pristiq
Pristiq is FDA-approved to treat major depressive disorder in adults. It is not approved for pediatric patients or for anxiety disorders, and dosing may need adjustment in people with severe kidney impairment.
Major depressive disorder (MDD) in adults
Not approved for pediatric patients
Dose adjustment needed in renal impairment
Same starting and maintenance dose (50 mg)
Escitalopram
Escitalopram is FDA-approved to treat major depressive disorder in adults and adolescents ages 12 to 17, as well as generalized anxiety disorder in adults. It is not approved for bipolar depression or for MDD in children under 12.
Major depressive disorder in adults
Major depressive disorder in adolescents 12-17
Generalized anxiety disorder in adults
Not approved for bipolar depression
Pristiq vs. Escitalopram Pros and Cons
Pristiq
Pristiq offers simple, consistent dosing at 50 mg once daily with no titration required, but it is only approved for depression, not anxiety. Generic desvenlafaxine is available, though it remains costlier than generic escitalopram.
Pros
No titration needed - full dose from day one
SNRI option when SSRIs haven't worked
Once-daily extended-release tablet
Generic desvenlafaxine available
Cons
Not approved for anxiety disorders
Higher rates of nausea and dry mouth
No approval for children or adolescents
Escitalopram
Escitalopram requires a short titration but is approved for both depression and anxiety, giving it broader clinical use. It has been available as a low-cost generic for over two decades, making it one of the least expensive antidepressants on the market.
Pros
Approved for anxiety and depression
Approved for adolescents 12 and older
Once-daily tablet or oral solution
Roughly $8 to $56 per month, far less than Pristiq
Cons
Requires titration over two weeks
Sexual side effects like ejaculation disorder
No norepinephrine reuptake effect
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