Plural of antispasmodic; drugs or substances that prevent or relieve muscle spasms and involuntary contractions.
From antispasmodic + -s (plural marker). This plural form became common in medical and pharmaceutical contexts as multiple antispasmodic drugs were developed and named throughout the 20th century.
Different antispasmodics work in different ways—some block acetylcholine (a muscle-signaling chemical) while others relax smooth muscle directly, showing how pharmacologists have learned to target the same problem through multiple mechanisms.
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