- |||||||||| Paxlovid (nirmatrelvir and ritonavir) / Pfizer
How complex Paxlovid (ritonavir) biotransformation? Let me count the ways: Rit is substrate of 3A4 (mainly), 2D6, P-gp. Rit is inhibitor of 3A4 (strong), 2D6, 2C19, P-gp. Rit is inducer of 3A4, 1A2, 2C9, 2C19, 2B6, UGT. Rit + drugs metab by 3A4 & 2D6 - inc 3x & 2x in AUC, resp. (Twitter) - Jan 15, 2022
|