Drug formulations refer to the specific combinations of active pharmaceutical ingredients and excipients used to create a medication. These formulations determine how a drug is delivered to the body, influencing its effectiveness, stability, and absorption. Common forms of drug formulations include tablets, capsules, liquids, and injectables, each designed for particular therapeutic purposes. The process of developing a drug formulation involves careful consideration of factors such as the drug's chemical properties, the intended route of administration, and patient needs. Regulatory agencies like the FDA oversee the approval of these formulations to ensure they are safe and effective for public use.