Poly-hist Dm
Dexchlorpheniramine Maleate And Dextromethorphan Hbr · Liquid · Oral
Active ingredient
Active Ingredients (in each 5mL teaspoonful) Dexchlorpheniramine Maleate: 1mg Dextromethorphan HBr: 10mg
Purpose
Antihistamine Cough Suppressant
Uses
Temporarily relieves these symptoms due to the common cold, hay fever (allergic rhinitis) or other upper respiratory allergies: cough due to minor throat and bronchial irritation runny nose sneezing itching of nose or throat itchy, watery eyes
Warnings
Do not use this product if you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric, or emotional conditions, or Parkinson's disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product Ask a doctor before use if you have a cough that lasts or is chronic such as occurs with smoking, asthma or emphysema a cough that occurs with too much phlegm (mucus) a breathing problem such as emphysema or chronic bronchitis glaucoma trouble urinating due to an enlarged prostate gland heart disease high blood pressure thyroid disease diabetes Ask a doctor of pharmacist before use if you are taking sedatives or tranquilizers. When using this product excitability may occur, especially in children may cause marked drowsiness avoid alcoholic drinks alcohol, sedatives, and tranquilizers may increase the drowsiness effect use caution when driving a motor vehicle or operating machinery Stop use and ask a doctor if cough or nasal congestion persists for more than 1 week, tends to recur, or is accompanied by a fever, rash or persistent headache. A persistent cough may be a sign of a serious condition. nervousness, dizziness, or sleeplessness occur new symptoms occur If pregnant or breast-feeding, ask a health professional before use.
Keep out of reach of children
Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.
Directions
Directions Adults and children 12 years of age and over: 2 teaspoonfuls (10mL) every 4 hours, not to exceed 12 teaspoonfuls in 24 hours, or as directed by a doctor. Children 6 to under 12 years of age: 1 teaspoonful (5mL) every 4 hours, not to exceed 6 teaspoonfuls in 24 hours, or as directed by a doctor. Children under 6 years of age: Consult a doctor.
Inactive ingredients
Inactive Ingredients Bubblegum Flavor, Citric Acid, Magnasweet, Methy Paraben, Potassium Citrate, Propyl Paraben, Propylene Glycol, Purified Water, Sorbitol, Sucralose.
Questions?
Questions? Comments? Call 1-800-882-1041 Manufactured for: Poly Pharmaceuticals Huntsville, AL 35763
Label text from the FDA structured product label by POLY PHARMACEUTICALS, INC. (revised Apr 23, 2026). Long sections are shortened; the complete label is on DailyMed.
Active ingredients
- Dextromethorphan Hydrobromide in 1 product
- Dexchlorpheniramine Maleate in 1 product
Poly-hist Dm NDC products (1)
| NDC | Strength & form | Labeler | Type |
|---|---|---|---|
| 50991-271 | Dextromethorphan Hydrobromide 10 mg/5mL; Dexchlorpheniramine Maleate 1 mg/5mL Liquid | POLY PHARMACEUTICALS, INC. | OTC MONOGRAPH DRUG |
Frequently asked questions
What is Poly-hist Dm used for?
Temporarily relieves these symptoms due to the common cold, hay fever (allergic rhinitis) or other upper respiratory allergies: cough due to minor throat and bronchial irritation runny nose sneezing itching of nose or throat itchy, watery eyes
Who makes Poly-hist Dm?
Poly-hist Dm is listed by 1 labeler in the FDA NDC directory, including POLY PHARMACEUTICALS, INC..