Ataractic drug and Minor tranquilliser

Ataractic drug noun - A drug used to reduce stress or tension without reducing mental clarity.

Minor tranquilliser and ataractic drug are semantically related. In some cases you can replace phrase "Minor tranquilliser" with "Ataractic drug", this phrases are similar.

Minor tranquilliser noun - A tranquilizer used to relieve anxiety and reduce tension and irritability.

Ataractic drug and minor tranquilliser are semantically related. You can use "Ataractic drug" instead a noun phrase "Minor tranquilliser".