Mucus Relief DM Extended Release Caplets

NDC 0536-1161 · Rugby Laboratories

Generic nameGuaifenesin, Dextromethorphan HBr

Dosage formTABLET, EXTENDED RELEASE

RouteORAL

Active ingredient(s)GUAIFENESIN, DEXTROMETHORPHAN HYDROBROMIDE

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

0536-1161-34 — 20 BLISTER PACK in 1 CARTON (0536-1161-34) / 1 TABLET, EXTENDED RELEASE in 1 BLISTER PACK

0536-1161-37 — 40 BLISTER PACK in 1 CARTON (0536-1161-37) / 1 TABLET, EXTENDED RELEASE in 1 BLISTER PACK

Related Codes

Same active ingredient

FDA lists these products with the same active ingredient.

0363-9930 — Guaifenesin and Pseudoephedrine Hydrochloride, 0363-9946 — Guaifenesin and Pseudoephedrine HCl, 0363-9974 — Acetaminophen, Dextromethorphan Hydrobromide, Guaifenesin, Phenylephrine Hydrochloride, 0363-9975 — Acetaminophen, Dextromethorphan HBr, Doxylamine Succinate, 0363-9976 — Acetaminophen, Dextromethorphan HBr, Doxylamine Succinate, 0395-9126 — Dextromethorphan HBr, 0485-0171 — DEXTROMETHORPHAN HYDROBROMIDE, CHLORPHENIRAMINE MALEATE, and PHENYLEPHRINE HYDROCHLORIDE, 0485-0204 — Brompheniramine Maleate, Dextromethorphan Hydrobromide, Phenylephrine Hydrochloride, 0485-0208 — GUAIFENESIN and PHENYLEPHRINE, 0485-0240 — CHLORPHENIRAMINE MALEATE, DEXTROMETHORPHAN HYDROBROMIDE, and PHENYLEPHRINE HYDROCHLORIDE, 0536-1163 — Guaifenesin, 0536-1213 — Guaifenesin, Dextromethorphan HBr, 0536-1249 — Guaifenesin, 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, +2508 more

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

Read from: FDA National Drug Code Directory, product.txt and package.txt (accessdata.fda.gov/cder/ndctext.zip) — Snapshot retrieved 2026-08-24, loaded 2026-08-24; CMS Medicare Part B Drug Average Sales Price (ASP) Pricing Files (cms.gov/medicare/payment/part-b-drugs/asp-pricing-files) -- the NDC-HCPCS crosswalk and Part B payment limit files — 2026 Q3 (July 2026 release). All data sources · How to read the labels