Effexor vs Prozac: side-by-side comparison
Effexor (Venlafaxine) and Prozac (Fluoxetine) both belong to the Antidepressiva class. They share clinical context but use different active ingredients. The choice between them depends on mechanism nuances, side-effect profile and individual response.
| Property | Effexor | Prozac |
|---|---|---|
| Active ingredient | Venlafaxine | Fluoxetine |
| Manufacturer | Wyeth/Pfizer | Eli Lilly |
| Class | Antidepressiva | Antidepressiva |
| Strengths | 37.5mg, 75mg, 150mg | 10mg, 20mg, 40mg |
| Forms | capsule | capsule, tablet |
What's the same
Effexor and Prozac both belong to the Antidepressiva class and are used for partially overlapping indications. The active ingredients — Venlafaxine vs Fluoxetine — share the same therapeutic approach, so many safety and management points carry across both.
Key differences
Meaningful differences are in active ingredient (Venlafaxine vs Fluoxetine), strengths (37.5mg, 75mg, 150mg vs 10mg, 20mg, 40mg), forms (capsule vs capsule, tablet), and the mechanism, half-life and side-effect nuances that distinguish members of the class.
Mechanism and action
Effexor: Effexor hemmt die Wiederaufnahme von Serotonin und Noradrenalin an der Synapse. Prozac: Fluoxetin hemmt selektiv den Serotonin-Wiederaufnahmetransporter und erhöht so die synaptische Serotoninverfügbarkeit.
When Effexor is preferred
Effexor XR ist zur Behandlung der Major Depression, der generalisierten Angststörung, der sozialen Phobie und der Panikstörung zugelassen.
When Prozac is preferred
Prozac ist zugelassen bei der Major Depression (Erwachsene und Kinder ab 8 Jahren), der Zwangsstörung (Kinder ab 7 Jahren), Bulimia nervosa, Panikstörung und prämenstrueller dysphorischer Störung.
Häufig gestellte Fragen
Is Effexor or Prozac better? ▾
There is no single answer. Effexor and Prozac both belong to the Antidepressiva class but differ in mechanism nuances, half-life and side-effect profile. Preference depends on the patient, the prescriber and prior response to other therapies.
Can I switch from Effexor to Prozac? ▾
Switching within the Antidepressiva class is done under supervision, typically using equivalent doses and a follow-up period to confirm response and tolerance. It is not a self-directed decision.
Do Effexor and Prozac have the same side effects? ▾
They share many of the Antidepressiva class side effects, with differences from mechanism and dose. Each medication's prescribing information lists specifics.
More Effexor comparisons
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