21 CFR 201.312 - Magnesium sulfate heptahydrate; label declaration on drug products.

Regulations last checked for updates: Feb 11, 2026

Title 21 - Food and Drugs last revised: Dec 18, 2026

§ 201.312 - Magnesium sulfate heptahydrate; label declaration on drug products.

Magnesium sulfate heptahydrate should be listed on the label of a drug product as epsom salt, which is its common or usual name.

authority: 21 U.S.C. 321,331,343,351,352,353,355,358,360,360b,360ccc,360ccc-1,360ddd,360ddd-1,360ee,360gg-360ss,371,374,379e; 42 U.S.C. 216,241,262,264

source: 40 FR 13998, Mar. 27, 1975, unless otherwise noted.

cite as: 21 CFR 201.312