Plays a critical role in the sodium-dependent reabsorption of bile acids from the lumen of the small intestine (PubMed:7592981, PubMed:9458785, PubMed:9856990). Transports various bile acids, unconjugated or conjugated, such as cholate and taurocholate (PubMed:7592981, PubMed:9458785, PubMed:9856990). Also responsible for bile acid transport in the renal proximal tubules, a salvage mechanism that helps conserve bile acids (Probable). Works collaboratively with the Na(+)-taurocholate cotransporting polypeptide (NTCP), the organic solute transporter (OST), and the bile salt export pump (BSEP), to ensure efficacious biological recycling of bile acids during enterohepatic circulation (PubMed:33222321). {ECO:0000269|PubMed:7592981, ECO:0000269|PubMed:9458785, ECO:0000269|PubMed:9856990, ECO:0000303|PubMed:33222321, ECO:0000305|PubMed:9458785}. This is the function of SLC10A2 (solute carrier family 10 member 2, ENSG00000125255).