Active pharmaceutical ingredients (APIs) and active ingredients (excipients) are both examples of Pharmaceutical Raw Materials. APIs are pharmaceutically active bulk drugs that produce the intended pharmacological result, while excipients are pharmacologically inactive compounds that are typically used as a carrier of the API in the medication. Excipients add bulk to preparations, aid in medication absorption, offer stabilization, and avoid drug denaturation. Pharmaceutical excipients are low in cost, stable, easy to handle, and inert in nature. Excipients are used in a wide range of pharmaceutical materials, including pills, tablets, oral liquids, inhalers, implants as well as injections.