Sublingual Route of Administration

**Semantic type:** Functional Concept

**Definition:** Administration of a drug beneath the tongue. The route provides rapid absorption, the drug immediately enters the bloodstream without first passing through the intestinal wall and liver. However, most drugs cannot be taken this way because they may be absorbed incompletely or erratically.

**Synonyms:** - SL - SL - SUBLINGUAL - SUBLINGUAL - SUBLINGUAL - Sublingual - Sublingual - Sublingual use