Amlodipine ( 7.2 ): Limit simvastatin to 20 mg daily when coadministered. Increased amlodipine exposure when coadministered with CYP3A inhibitors Hydrochlorothiazide ( 7.3 ): Antidiabetic drugs: Dosage adjustment of antidiabetic may be required. 2 Drug Interactions with Amlodipine Simvastatin: Co-administration of simvastatin with amlodipine increases the systemic exposure of simvastatin.
Source: FDA drug label - olmesartan medoxomil / amlodipine besylate / hydrochlorothiazide