Dosage Forms

Injectable pharmaceutical products are used to deliver drugs into the bloodstream or directly into body tissues through a hollow needle that penetrates the skin. In this method, the drug is injected intravenously, intramuscularly, subcutaneously, or intra-articularly.

Most topical medications for use on body surfaces such as the skin or mucous membranes for treating diseases come in a wide range of forms, including creams, foams, gels, drops, lotions, and ointments. Many topical medications are applied to the skin.