United States · FDA National Drug Code directory

HISTEX-DM New Formulation

A source-listed medicine record.

Factual source checks only. This page is not a clinically reviewed monograph. Historical or discontinued records may be included; listing does not confirm approval, current availability or pharmacy stock.

Medicine identity

Source reference: 28595-310_3001043a-7932-0867-e063-6294a90a91e6
Product NDC: 28595-310
Form: SYRUP
Composition / generic term: DEXTROMETHORPHAN HBr, PSEUDOEPHEDRINE HCI, and TRIPROLIDINE HCI
Labeler: Allegis Pharmaceuticals, LLC
Marketing category: OTC MONOGRAPH DRUG
Marketing start / end (source format): 20250310
Source listing expiry: 20261231

Source-listed ingredients

DEXTROMETHORPHAN HYDROBROMIDE — 20 mg/5mL
PSEUDOEPHEDRINE HYDROCHLORIDE — 30 mg/5mL
TRIPROLIDINE HYDROCHLORIDE — 2.5 mg/5mL

These values do not establish equivalence or a dose recommendation.

Packages

473 mL in 1 BOTTLE (28595-310-16) · 28595-310-16

Source and coverage

Open FDA National Drug Code directory →

Snapshot retrieved: 2026-09-17. This is the acquisition date, not a medical review date.

Clinical information, images and comparisons appear only when separately reviewed for this record. Coverage may be incomplete. Ask a pharmacist or clinician about your treatment.

Browse United States records →