Rugby Mucus Relief DM ER

NDC 0536-1446 · Rugby Laboratories

Generic namedextromethorphan hydrobromide, guaifenesin

Dosage formTABLET, EXTENDED RELEASE

RouteORAL

Active ingredient(s)DEXTROMETHORPHAN HYDROBROMIDE, GUAIFENESIN

Strength30; 600 mg/1; mg/1

Pharmacologic classDecreased Respiratory Secretion Viscosity [PE], Expectorant [EPC], Increased Respiratory Secretions [PE], Sigma-1 Agonist [EPC], Sigma-1 Receptor Agonists [MoA], Uncompetitive N-methyl-D-aspartate Receptor Antagonist [EPC], Uncompetitive NMDA Receptor Antagonists [MoA]

Marketing categoryANDA

Packages

0536-1446-34 — 1 BOTTLE in 1 CARTON (0536-1446-34) / 20 TABLET, EXTENDED RELEASE in 1 BOTTLE

Related Codes

Same active ingredient

FDA lists these products with the same active ingredient.

0536-1309 — Guaifenesin/phenylephrine, 0536-1311 — Guaifenesin, 0536-1312 — Dextromethorphan Hydrobromide / Guaifenesin, 0536-1313 — Dextromethorphan Hydrobromide, Guaifenesin, 0536-1314 — Guaifenesin, 0536-1333 — Guaifenesin and Pseudoephedrine Hydrochloride, 0536-1334 — Dextromethorphan HBr, 0536-1348 — dextromethorphan hydrobromide, guaifenesin, 0536-1392 — Guaifenesin, 0536-1430 — Guaifenesin, 0536-1447 — dextromethorphan hydrobromide, guaifenesin, 0536-1449 — guaifenesin and pseudoephedrine hydrochloride, 0536-1451 — guaifenesin, 0536-1480 — Dextromethorphan Hydrobromide, 0536-1489 — guaifenesin, 0574-1104 — Brompheniramine Maleate, Pseudoephedrine Hydrochloride and Dextromethorphan Hydrobromide, 0615-8637 — Guaifenesin, 0682-0475 — CODEINE PHOSPHATE and GUAIFENESIN, 0713-0780 — Promethazine Hydrochloride and Dextromethorphan Hydrobromide, 0904-5154 — Guaifenesin, +2508 more

From the FDA National Drug Code Directory, retrieved August 24, 2026. Product listings are submitted by labelers; FDA does not verify them.