Inhibitory effect of ezetimibe can be prevented by an administration interval of 4  h between α‐tocopherol and ezetimibe

In this study, we investigated the influence of ezetimibe on the absorption of α‐tocopherol with single administration and long‐term administration. We also examined an approach to avoid its undesirable consequence. α‐Tocopherol (10 mg/kg) and ezetimibe (0.1 mg/kg) were administered to rats, and the plasma concentration profiles of α‐tocopherol and tissue concentrations were investigated. The plasma concentration of α‐tocopherol was decreased by the combination use of ezetimibe in the case of concurrent single administration. On the other hand, inhibition of the absorption of α‐tocopherol was prevented by an administration interval of 4 h. In a group of rats with administration for 2 months with a 4‐h interval, not only the plasma concentration but also the liver concentration was increased compared with those in a group with concurrent combination intake of α‐tocopherol and ezetimibe. The absorption of α‐tocopherol was inhibited by ezetimibe. The inhibitory effect of ezetimibe can be prevented by an administration interval of 4 h, though ezetimibe is a medicine of enterohepatic circulation. Attention should be paid to the use of ezetimibe and components of NPC1L1 substrates such as α‐tocopherol.
Source: Biopharmaceutics and Drug Disposition - Category: Drugs & Pharmacology Authors: Tags: Original Paper Source Type: research