Paxil vs. Celexa
See how Paxil and Celexa compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Both Paxil and Celexa are SSRIs that carry a boxed warning for increased suicidal thoughts in children, teens, and young adults.
Paxil is FDA-approved for six conditions including OCD, panic disorder, and PTSD, while Celexa is FDA-approved only for major depression in adults.
Celexa has a simpler once-daily dosing schedule with minimal titration, while Paxil's short half-life often causes more noticeable withdrawal symptoms when stopped.
Paxil vs. Celexa Drug Summary
Paxil
Paxil (paroxetine) is an SSRI antidepressant approved for major depression, OCD, panic disorder, social anxiety disorder, generalized anxiety disorder, and PTSD. It comes as an immediate-release tablet, extended-release tablet, or liquid suspension, taken once daily.
Celexa
Celexa (citalopram) is an SSRI antidepressant FDA-approved for major depressive disorder in adults, though it's often prescribed off-label for anxiety-related conditions. It's taken as an oral tablet or solution, once daily.
Paxil vs. Celexa Side Effects
Paxil
Celexa
Paxil vs. Celexa Dosage
Paxil
Celexa
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | At the start |
| Maximum dose | 50 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 |
Paxil
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | At the start |
| Maximum dose | 50 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 |
Paxil vs. Celexa Indications
Paxil
Paxil is FDA-approved for a wide range of conditions beyond depression, including several anxiety disorders and PTSD. It's one of the few SSRIs with this breadth of approved uses, making it a common choice when anxiety and depression overlap.
Major depressive disorder
Obsessive-compulsive disorder
Panic disorder
Social anxiety disorder
Celexa
Celexa's FDA approval covers only major depressive disorder in adults. Despite this narrower label, it's frequently prescribed off-label for generalized anxiety, panic disorder, and OCD based on clinical experience.
Major depressive disorder (FDA-approved)
Generalized anxiety disorder (off-label)
Panic disorder (off-label)
Obsessive-compulsive disorder (off-label)
Paxil vs. Celexa Pros and Cons
Paxil
Paxil offers the broadest FDA-approved indication list of the two, covering several anxiety disorders alongside depression. Its strong CYP2D6 inhibition means it interacts with many other medications, and its short half-life can make stopping it more uncomfortable.
Pros
Approved for six conditions, including OCD, panic disorder, and PTSD
Available in extended-release and liquid suspension forms
Long clinical track record since 1992 across multiple anxiety disorders
Cons
Strong CYP2D6 inhibition can require dose changes to other medications
Short half-life often leads to more pronounced discontinuation symptoms
Not approved for use in pediatric patients
Celexa
Celexa has a simpler, well-studied dosing regimen and a long safety track record as one of the most widely prescribed SSRIs. Its main clinical limitation is a dose-dependent QT prolongation risk that caps the maximum dose in certain patients.
Pros
Well-established long-term safety record as a widely prescribed SSRI
Simple two-step dosing with minimal titration
Available as an oral solution for those who have trouble swallowing pills
Cons
Dose-dependent QT prolongation risk limits the maximum daily dose
Lower max dose required in patients over 60, with liver issues, or poor metabolizers
Only FDA-approved for adult major depression, so anxiety uses are off-label
Common Symptoms and Related Diseases You Can Explore
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