Zoloft vs. Pristiq
See how Zoloft and Pristiq compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Zoloft is an SSRI approved for six conditions including depression, OCD, panic disorder, PTSD, social anxiety disorder, and PMDD, while Pristiq is an SNRI approved only for major depressive disorder in adults.
Zoloft is usually titrated from a starting dose up to a maximum of 200 mg a day, while Pristiq is typically taken at a fixed 50 mg dose with no titration needed for most patients.
Nausea is the most common side effect for both drugs, but it's reported more often with Pristiq (up to 41%) than with Zoloft (up to 26%).
Zoloft vs. Pristiq Drug Summary
Zoloft
Zoloft (sertraline) is an SSRI approved for major depressive disorder, OCD, panic disorder, PTSD, social anxiety disorder, and PMDD. It's taken once daily as a tablet or oral solution, usually starting at 25-50 mg and adjusted based on response and tolerability.
Pristiq
Pristiq (desvenlafaxine) is an SNRI approved only for major depressive disorder in adults. It's taken as a once-daily extended-release tablet, and the 50 mg starting dose is usually also the therapeutic dose, since higher doses haven't shown added benefit.
Zoloft vs. Pristiq Side Effects
Zoloft
Pristiq
Zoloft vs. Pristiq Dosage
Zoloft
Pristiq
| STAGE | DOSE | WHEN |
| Starting dose | 50 mg once daily | Week 1 |
| Maximum dose | 50-200 mg once daily | If needed |
| Dose changes | 2 increases | As tolerated |
| STAGE | DOSE | WHEN |
| Starting dose | 50 mg once daily | Day 1 |
| Maximum dose | 50 mg once daily | Same as starting |
| Dose changes | None | Fixed dose |
Zoloft
| STAGE | DOSE | WHEN |
| Starting dose | 50 mg once daily | Week 1 |
| Maximum dose | 50-200 mg once daily | If needed |
| Dose changes | 2 increases | As tolerated |
Pristiq
| STAGE | DOSE | WHEN |
| Starting dose | 50 mg once daily | Day 1 |
| Maximum dose | 50 mg once daily | Same as starting |
| Dose changes | None | Fixed dose |
Zoloft vs. Pristiq Indications
Zoloft
Zoloft is FDA-approved to treat major depressive disorder, obsessive-compulsive disorder, panic disorder, PTSD, social anxiety disorder, and premenstrual dysphoric disorder. It's approved for adults across all of these, and for OCD in children and adolescents ages 6 to 17.
Major depressive disorder (MDD)
Obsessive-compulsive disorder, incl. ages 6-17
Panic disorder and PTSD
Pristiq
Pristiq is FDA-approved for major depressive disorder in adults. It's not approved for pediatric patients, and the dose needs to be adjusted for people with severe kidney disease.
Major depressive disorder (MDD) in adults
Not approved for pediatric patients
Dose adjustment needed in severe renal impairment
Zoloft vs. Pristiq Pros and Cons
Zoloft
Zoloft has one of the broadest FDA-approved indication lists among antidepressants, covering six separate conditions. It has been on the market since 1991, giving prescribers decades of real-world experience with its safety profile.
Pros
Approved for six conditions, not just depression
Decades of clinical use since 1991 approval
Also approved for OCD in children ages 6-17
Cons
Often needs weeks of dose adjustments to find the right level
Higher reported rates of insomnia and diarrhea in trials
Ejaculation failure reported in up to 14% of men
Pristiq
Pristiq's dual action on serotonin and norepinephrine can be an option for patients who haven't responded well to an SSRI alone. Its FDA approval is limited to major depressive disorder, and the 50 mg dose is fixed for most patients from day one.
Pros
No titration needed for most patients
Dual serotonin-norepinephrine mechanism differs from SSRIs
Simple once-daily fixed dose start to finish
Cons
FDA-approved only for depression, a narrower label than Zoloft
Higher reported nausea and dry mouth rates than Zoloft
No pediatric approval for any condition
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