Ataractic drug and Minor tranquilizer

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

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

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

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