One of the primary functions of excipients is to enhance the stability of the API. Many APIs are sensitive to environmental factors like humidity and light, which can degrade their efficacy over time. Excipients can create a protective matrix around the API, shielding it from these detrimental effects, and ensuring the longevity of the medication. Moreover, excipients can facilitate the dissolution and absorption of the API in the gastrointestinal tract, thereby enhancing bioavailability. For example, in formulations aimed at oral delivery, disintegrants are utilized to help the solid form of medication break down in the digestive system, allowing for faster absorption of the API into the bloodstream.