Metformin vs Sitagliptin: side-by-side comparison
Metformin (Biguanide) 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 | Metformin | Sitagliptin |
|---|---|---|
| Therapeutic class | Biguanide | DPP-4 inhibitor |
| CAS | 657-24-9 | 486460-32-6 |
| ATC | A10BA02 | A10BH01 |
| Molecular weight | 129.16 g/mol | 407.31 g/mol |
| Brands with this active ingredient | 1 | 1 |
What they share
Metformin 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
Metformin 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
Metformin: L'effet principal de la metformine est de freiner la production hépatique de glucose en inhibant le complexe I mitochondrial, ce qui élève le rapport AMP/ATP cellulaire et active l'AMP-kinase. Sitagliptin: La sitagliptine inhibe de façon réversible la DPP-4, sérine protéase responsable de la dégradation rapide du glucagon-like peptide 1 (GLP-1) et du polypeptide insulinotrope glucose-dépendant (GIP).
Indications compared
Metformin: La metformine est indiquée en traitement oral de première intention chez l'adulte et dans certaines populations pédiatriques atteintes de diabète de type 2, seule ou en association à d'autres antidiabétiques, dont l'insu… Sitagliptin: La sitagliptine est autorisée chez l'adulte atteint de diabète de type 2, seule ou en association à d'autres antidiabétiques, pour améliorer le contrôle glycémique.
Safety profile
Metformin: Les effets indésirables les plus fréquents sont digestifs : nausées, diarrhée, gêne abdominale et goût métallique, souvent améliorés par une titration progressive, une prise au cours des repas ou le recours à la forme à… Sitagliptin: La sitagliptine est généralement bien tolérée.
Questions fréquentes
Is Metformin better than Sitagliptin? ▾
Metformin and Sitagliptin are not "better or worse" — they treat different things. The sensible question is which fits your specific need.
Can Metformin 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 Metformin
Products with Sitagliptin
Les informations publiées sur ce site sont fournies à titre documentaire et pédagogique. Elles ne remplacent pas l'avis d'un professionnel de santé qualifié.