What does "SL" denote in relation to medication administration?

The term "SL" in the context of medication administration refers to "sublingual," which means that the medication is placed under the tongue. This method allows for rapid absorption into the bloodstream, offering a quick onset of action because the sublingual tissues are rich in blood supply. Medications administered this way can bypass the digestive system and first-pass metabolism, providing a more immediate effect compared to oral administration.

Sublingual administration is often used for medications that need to act quickly, such as nitroglycerin for angina pectoris. This method is effective in quickly delivering the drug into circulation, making it particularly useful in emergencies or situations where time is critical.

Understanding this terminology is essential for medication management, as it influences how a patient is instructed to take their medication and assures healthcare providers that the intended method of administration is being followed.