Diltiazem Hydrochloride + Ranolazine Interaction

Moderateinteraction on record

Description

Increased exposure of ranolazine due to CYP3A4 inhibition. Limit ranolazine to 500 mg twice daily.

Mechanism

Diltiazem inhibits CYP3A4 metabolism of ranolazine

Source: NLP:diltiazem hydrochloride