PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20012601-2 2010 Verapamil is a substrate of both P-gp and CYP3A4. Verapamil 0-9 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 42-48 20012601-11 2010 CONCLUSION: Lovastatin increased the absorption of verapamil by inhibiting P-gp and inhibited the first-pass metabolism of verapamil by inhibiting CYP3A4 in the intestine and/or liver in humans. Verapamil 123-132 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 147-153