Tenapanor + EnalaprilUnknown
7 DRUG INTERACTIONS OATP2B1 Substrates: Potential for reduced exposure of the concomitant drug (e.g., enalapril). Enalapril is a substrate of OATP2B1. When enalapril was coadministered with XPHOZAH (30 mg twice daily for five days), the peak exposure (C max ) of enalapril and its active metabolite, enalaprilat, decreased by approximately 70% and total systemic exposures (AUC) decreased by 50 to 65% compared to when enalapril was administered alone [see Clinical Pharmacology (12.3) ] .
Source: FDA drug label - tenapanor