Prozac vs. Escitalopram
See how Prozac and Escitalopram compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Prozac is FDA-approved for OCD, bulimia, and panic disorder, while escitalopram is only approved for depression and generalized anxiety disorder.
Prozac's long-acting metabolite allows a once-weekly maintenance option, something escitalopram does not offer.
Escitalopram has a simpler two-step dosing schedule, while Prozac dosing varies more depending on the condition being treated.
Prozac vs. Escitalopram Drug Summary
Prozac
Prozac (fluoxetine) is a selective serotonin reuptake inhibitor (SSRI) approved for major depressive disorder, OCD, bulimia nervosa, panic disorder, and treatment-resistant depression when combined with olanzapine. It comes as a capsule, delayed-release weekly capsule, tablet, or liquid, usually starting at 20 mg once daily.
Escitalopram
Escitalopram is an SSRI approved for major depressive disorder and generalized anxiety disorder in adults. It is taken once daily as a tablet or liquid, typically starting at 10 mg and increasing to 20 mg after one week.
Prozac vs. Escitalopram Side Effects
Prozac
Escitalopram
Prozac vs. Escitalopram Dosage
Prozac
Escitalopram
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | At the start |
| Maximum dose | 90 mg once weekly | If needed |
| Dose changes | 2 increases | As tolerated |
| 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 |
Prozac
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | At the start |
| Maximum dose | 90 mg once weekly | If needed |
| Dose changes | 2 increases | As tolerated |
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 |
Prozac vs. Escitalopram Indications
Prozac
Prozac treats major depressive disorder, OCD, bulimia nervosa, and panic disorder. It is also approved in combination with olanzapine for bipolar I depression and treatment-resistant depression.
Major depressive disorder
Obsessive-compulsive disorder (OCD)
Bulimia nervosa
Escitalopram
Escitalopram treats major depressive disorder in adults and adolescents ages 12 to 17. It is also approved for generalized anxiety disorder in adults.
Major depressive disorder (adults)
Major depressive disorder (adolescents 12-17)
Generalized anxiety disorder (adults)
Prozac vs. Escitalopram Pros and Cons
Prozac
Prozac has the broadest set of FDA approvals among SSRIs, covering depression, OCD, bulimia, and panic disorder. Its long half-life means missed doses are less disruptive, but it can also take longer to leave the body if side effects occur.
Pros
Approved for more conditions than escitalopram, including OCD, bulimia, and panic disorder
Only SSRI with a once-weekly maintenance dosing option
Long half-life makes occasional missed doses less noticeable
Cons
Not approved for generalized anxiety disorder on its own
Higher rates of insomnia and anxiety reported in trials
Long half-life means side effects and drug interactions can persist for weeks after stopping
Escitalopram
Escitalopram has a simpler, more predictable dosing schedule with only one titration step. It is a first-line option for both depression and generalized anxiety disorder, but it lacks Prozac's range of other approved uses.
Pros
Approved for generalized anxiety disorder, which Prozac is not
Simple two-step dosing schedule reaches maintenance dose in one week
Lower reported rates of insomnia and anxiety compared to Prozac
Cons
Not approved for OCD, bulimia, panic disorder, or bipolar depression
No once-weekly dosing option
Ejaculation disorder reported more often than with Prozac
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