एफाविरेंज़, लैमिवुडिन और टेनोफोविर और टेल्मिसार्टन और एम्लोडिपिन का इंटरैक्शन

CYP3A4 Inhibitors Co-administration of a 180 mg daily dose of diltiazem with 5 mg amlodipine in elderly hypertensive patients resulted in a 60% increase in amlodipine systemic exposure.

However, strong inhibitors of CYP3A4 (e.g., ketoconazole, itraconazole, ritonavir) may increase the plasma concentrations of amlodipine to a greater extent.

Monitor for symptoms of hypotension and edema when amlodipine is co-administered with CYP3A4 inhibitors.

Patients should be monitored for adequate clinical effect when amlodipine is co-administered with CYP3A4 inducers.

CYP3A4 Inducers No information is available on the quantitative effects of CYP3A4 inducers ( e.g., carbamazepine, phenobarbital, phenytoin, fosphenytoin, primidone, rifampicin, St.

Calcium channel blockers: Diltiazem ↓ diltiazem ↓ desacetyl diltiazem ↓ N-monodesmethyldiltiazem Diltiazem dose adjustments should be guided by clinical response (refer to the full prescribing information for diltiazem).

Others (e.g., felodipine, nicardipine, nifedipine, verapamil) ↓ calcium channel blocker When coadministered with EFV, dosage adjustment of calcium channel blocker may be needed and should be guided by clinical response (refer to the full prescribing information for the calcium channel blocker).