Zoloft vs. Celexa
See how Zoloft and Celexa compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Zoloft is FDA-approved for six conditions including panic disorder, PTSD, and social anxiety, while Celexa is approved only for major depressive disorder in adults.
Celexa has a simpler two-step dosing schedule, but doses above 40 mg per day are avoided because of a risk of heart rhythm changes called QT prolongation.
Both drugs commonly cause nausea, dry mouth, and insomnia early in treatment, though Zoloft is more likely to cause diarrhea and sexual side effects.
Zoloft vs. Celexa Drug Summary
Zoloft
Zoloft (sertraline) is a selective serotonin reuptake inhibitor approved for major depressive disorder, OCD, panic disorder, PTSD, social anxiety disorder, and PMDD. It comes as a tablet or oral solution taken once daily, usually starting at 25 mg or 50 mg and adjusted based on response.
Celexa
Celexa (citalopram) is a selective serotonin reuptake inhibitor approved for major depressive disorder in adults. It comes as a tablet or oral solution taken once daily, starting at 20 mg for the first week before moving to a standard maintenance dose of 40 mg.
Zoloft vs. Celexa Side Effects
Zoloft
Celexa
Zoloft vs. Celexa Dosage
Zoloft
Celexa
| STAGE | DOSE | WHEN |
| Starting dose | 50 mg once daily | Week 1 |
| Maximum dose | 200 mg once daily | If needed |
| Dose changes | 3 increases | As tolerated |
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | Week 1 |
| Maximum dose | 40 mg once daily | Week 2 onward |
| Dose changes | 1 increase | Every week |
Zoloft
| STAGE | DOSE | WHEN |
| Starting dose | 50 mg once daily | Week 1 |
| Maximum dose | 200 mg once daily | If needed |
| Dose changes | 3 increases | As tolerated |
Celexa
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | Week 1 |
| Maximum dose | 40 mg once daily | Week 2 onward |
| Dose changes | 1 increase | Every week |
Zoloft vs. Celexa Indications
Zoloft
Zoloft holds FDA approval for more conditions than most SSRIs, covering both depression and several anxiety-related disorders. It is also one of the few SSRIs approved for OCD in children as young as 6.
Major depressive disorder (MDD) in adults
OCD in adults and children ages 6-17
Panic disorder, with or without agoraphobia
Posttraumatic stress disorder (PTSD)
Social anxiety disorder and PMDD
Celexa
Celexa's FDA approval is limited to major depressive disorder in adults. It is frequently prescribed off-label for anxiety-related conditions, though those uses have not been evaluated or approved by the FDA.
Major depressive disorder (MDD) in adults
Off-label for generalized anxiety disorder
Off-label for panic disorder
Off-label for obsessive-compulsive disorder
Not approved for use in children or teens
Zoloft vs. Celexa Pros and Cons
Zoloft
Zoloft carries FDA approval for the widest range of anxiety and mood disorders among SSRIs, making it a flexible choice when depression overlaps with panic attacks, PTSD, or social anxiety. Dosing is adjusted gradually over several weeks up to a maximum of 200 mg per day.
Pros
Approved for six conditions, not just depression
No QT-prolongation dose cap like citalopram
Approved for pediatric OCD, ages 6 and up
Flexible dosing range up to 200 mg per day
Cons
Higher rates of nausea and diarrhea reported
Sexual side effects, especially in men, are common
More titration steps than Celexa's simpler schedule
Not approved for pediatric depression
Celexa
Celexa is approved specifically for major depressive disorder, and its two-step dosing schedule is simpler than many other SSRIs. Because of a dose-dependent risk of heart rhythm changes, doses above 40 mg per day are not recommended, which limits flexibility for some patients.
Pros
Simple two-step dosing: 20 mg, then 40 mg
Long track record of use since 1998
Lower reported rate of diarrhea than Zoloft
Straightforward once-daily regimen
Cons
Only FDA-approved for one condition, MDD
40 mg/day dose ceiling limits upward titration
Lower max dose (20 mg) for older adults or poor metabolizers
Not approved for pediatric use or bipolar depression
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