Transporter inhibition can occur through various mechanisms, including competitive, non-competitive, and allosteric inhibition. Competitive inhibition involves a compound directly competing with the substrate for the binding site on the transporter. In non-competitive inhibition, the inhibitor interacts with the transporter at a different site, altering its function. Allosteric inhibitors bind to a site other than the active site, inducing a conformational change that reduces transporter activity.