Finasteride vs Sitagliptin: side-by-side comparison
Finasteride (5-alpha-reductase inhibitor (type II)) and Sitagliptin (DPP-4 inhibitor) belong to different therapeutic classes and are rarely substitutes for each other. The comparison is useful when a single patient is weighing both options for adjacent or overlapping needs.
| Property | Finasteride | Sitagliptin |
|---|---|---|
| Therapeutic class | 5-alpha-reductase inhibitor (type II) | DPP-4 inhibitor |
| CAS | 98319-26-7 | 486460-32-6 |
| ATC | G04CB01 | A10BH01 |
| Molecular weight | 372.5 g/mol | 407.31 g/mol |
| Brands with this active ingredient | 1 | 1 |
What they share
Finasteride and Sitagliptin share the common regulatory framework for prescription active ingredients, bioequivalence standards for generics, and pharmacist oversight. Beyond that, points in common are limited.
Key differences
Finasteride acts by a different mechanism than Sitagliptin, with indications that barely overlap. Comparing the two is useful when a clinician has mentioned both in the same context or the patient wants to understand why one was prescribed instead of the other.
Mechanisms compared
Finasteride: Finasterid bindet mit hoher Affinität an die 5-alpha-Reduktase Typ II und blockiert die Umwandlung von Testosteron in DHT. Sitagliptin: Sitagliptin hemmt reversibel DPP-4, die Serinprotease, die für den schnellen Abbau von Glucagon-like Peptid 1 (GLP-1) und glukoseabhängigem insulinotropen Polypeptid (GIP) verantwortlich ist.
Indications compared
Finasteride: Finasterid ist in einer Dosierung von 5 mg pro Tag zur Behandlung der benignen Prostatahyperplasie bei erwachsenen Männern zugelassen, wo es das Prostatavolumen reduziert, den Harnfluss verbessert und das Risiko eines ak… Sitagliptin: Sitagliptin ist bei Erwachsenen mit Typ-2-Diabetes mellitus, allein oder in Kombination mit anderen antidiabetischen Wirkstoffen, zur Verbesserung der glykämischen Kontrolle zugelassen.
Safety profile
Finasteride: Häufige Nebenwirkungen umfassen sexuelle Funktionsstörungen (verminderte Libido, erektile Dysfunktion, Ejakulationsstörungen), die in klinischen Studien bei etwa 1–3 % der Männer berichtet wurden. Sitagliptin: Sitagliptin wird im Allgemeinen gut vertragen.
Häufig gestellte Fragen
Is Finasteride better than Sitagliptin? ▾
Finasteride and Sitagliptin are not "better or worse" — they treat different things. The sensible question is which fits your specific need.
Can Finasteride and Sitagliptin be combined? ▾
Whether they can be combined depends on the indications and the interaction profile of each. If both are in a single prescription, the prescriber has weighed it; in self-medication they should never be combined.
Do they have the same side-effect profile? ▾
No — they belong to different classes and have distinct side-effect profiles. Each has its own prescribing information.
Products with Finasteride
Products with Sitagliptin
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