The term calmative is
sometimes used to refer to agents (e.g. natural substances
herbs, oils, or
essences, or conventional pharmaceutical drugs) that act as a sedative.
This is not a standard medical term and therefore is not included in
some of the leading medical / biological dictionaries. However, the term
"sedative" is included and is generally defined as a drug/agent that
has a calming effect, relives anxiety, tension, and distress.