Antispasmodic agent and Medicinal drug

Antispasmodic agent noun - A drug used to relieve or prevent spasms (especially of the smooth muscles).

Medicinal drug and antispasmodic agent are semantically related. In some cases you can use "Medicinal drug" instead a noun phrase "Antispasmodic agent".

Medicinal drug noun - (medicine) something that treats or prevents or alleviates the symptoms of disease.

Antispasmodic agent and medicinal drug are semantically related. Sometimes you can replace phrase "Antispasmodic agent" with "Medicinal drug", this phrases are similar.