Oral administration refers to the process of taking medications or substances by mouth. This method is one of the most common ways to deliver drugs, as it is convenient and non-invasive. Once ingested, the medication travels through the digestive system, where it is absorbed into the bloodstream, allowing it to take effect. This method can include various forms, such as tablets, capsules, liquids, or powders. Factors like absorption rate, patient compliance, and drug formulation can influence how effectively the medication works. Oral administration is often preferred for its ease of use and the ability to self-administer.