Recently, it is realized that transporters, apart from enzymes, play a key role in drug metabolism and
pharmacokinetics. More and more pharmaceutical researchers focused on transporter study and found that drug
transporters not only involved in pharmacokinetics including absorption, distribution, metabolism and excretion
(ADME) but also in Drug-Drug interactions (DDIs). DDIs induced by drug transporters are the important safety
evaluation factors which have to be taken into account at stage of drug discovery and development. Therefore, it
should pay more attention to the studies on step of preclinical and clinical trial. In this review, the author focused on the effects of drug
transporters on pharmacological and safety responses, such as the effects on plasma elimination half-lives, on drug accumulation in body
after repeated dosing, on potentiating either pharmacological or adverse effects and molecular mechanisms of transporter-mediated DDIs.
Present studies showed that DDIs involving the drug transporters including ABC transporters, organic anion and cation transporters, peptide
transporters, monocarboxylate transporters, nucleoside transporters and folate transporters, and the possible side effects derived from
clinical combination therapy must pay attention. The author also discussed the molecular mechanisms of transporter-mediated DDIs by
the data obtained from preclinical and clinical studies, and inferred the available curative effects and the potential risk of the drug combination
involving these drug transporters, which provides a reference for the safety of clinical medication and a consideration for a successful
This article carefully reviewed transporter-based DDIs and highlighted areas that DDIs were poorly predicted through transporters or
areas are still confronted with challenges in future.