What is another term for the abbreviation "sl"?

The abbreviation "sl" stands for sublingual administration, which refers to a method of drug delivery where a medication is placed under the tongue. This route allows for quick absorption directly into the bloodstream through the rich network of blood vessels in the sublingual area. Sublingual administration is beneficial for certain medications that need to achieve rapid effects or are poorly absorbed in the gastrointestinal tract, as it bypasses the digestive system.

Other terms in the answer choices represent different concepts in pharmacology or health care but do not correspond to "sl." For instance, slow release tablet refers to a formulation designed to release a drug gradually over time, systemic load pertains to the total quantity of a drug available in the systemic circulation, and standard level could refer to a variety of contexts unrelated to drug administration. Hence, sublingual administration is the accurate and appropriate term corresponding to the abbreviation "sl."