Phenformin has 2 known drug interactions based on U.S. FDA drug labeling data. Patients taking Phenformin should inform their healthcare provider of all current medications — including over-the-counter drugs and supplements — to avoid potentially harmful combinations. Data sourced from OpenFDA and the NIH National Library of Medicine.

Total: 2
Minor: 2

Minor (2)

Phenformin + Prazosin— Prazosin has been administered without adverse drug interaction with phenformin in limited clinical experience.
Phenformin + Prazosin Hydrochloride— Administered without adverse drug interaction in limited clinical experience.

Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine. For informational purposes only. Always consult your pharmacist or physician.