The SLC22 family consists of a group of solute carrier proteins that play a crucial role in the transport of various organic compounds across cell membranes. These proteins are involved in the uptake and excretion of drugs, metabolites, and other substances, influencing pharmacokinetics and drug interactions. Members of the SLC22 family, such as OCT1 and OCT2, are primarily found in the liver and kidneys, where they facilitate the movement of compounds into and out of cells. Their function is essential for maintaining homeostasis and can impact the effectiveness and toxicity of medications.