Acetylcholinesterase Inhibitor

**Semantic type:** Chemical Viewed Functionally

**Definition:** Any pharmacologic substance that inhibits acetylcholinesterase (AchE), an enzyme that breaks down acetylcholine (Ach) in the synaptic cleft. Inhibition of acetylcholinesterase results in an increase in the level and duration of action of acetylcholine.

**Synonyms:** - AcCholE Inhibitor - Acetylcholine Hydrolase Inhibitor - Cholinesterase Inhibitor