Dextromethorphan Polistirex Extended-Release (Dextromethorphan Polistirex) 30 mg

SUSPENSIONORALAmneal Pharmaceuticals LLCNDC: 65162-700Updated: Mar 2026

Active Ingredient

DEXTROMETHORPHAN HYDROBROMIDE — 30 mg

Inactive Ingredients (Fillers)

⚠️ 6 ingredients flagged as common allergens

FD&C Yellow No. 6

⚠️ Yes — Dye

Colorant

Methylparaben

⚠️ Yes — Parabens

Preservative

Polyethylene Glycol 3350

⚠️ Yes — PEG

Coating/Osmotic Agent

Propylene Glycol

⚠️ Yes — Propylene Glycol

Solvent/Humectant

Propylparaben

⚠️ Yes — Parabens

Preservative

Sucrose

⚠️ Yes — Sucrose

Sweetener/Coating

Citric Acid Monohydrate

pH Adjuster/Buffer

Corn Oil

Solvent/Vehicle

Edetate Disodium

Chelating Agent

Ethylcellulose

Coating/Binder

Hamamelis Virginiana Top Water

Skin Conditioner

Hydrochloric Acid

pH Adjuster

Polysorbate 80

Emulsifier/Solubilizer

Sodium Hydroxide

pH Adjuster

Sodium Polystyrene Sulfonate

Tragacanth

Xanthan Gum

Thickener/Stabilizer

Ingredient	Purpose	Common Allergen?	Description
FD&C Yellow No. 6	Colorant	⚠️ Yes — Dye	An artificial colorant (also called Sunset Yellow). May cause reactions in people sensitive to artificial dyes.
Methylparaben	Preservative	⚠️ Yes — Parabens	A preservative used to prevent microbial growth. Can cause allergic contact dermatitis in sensitive individuals.
Polyethylene Glycol 3350	Coating/Osmotic Agent	⚠️ Yes — PEG	A higher-molecular-weight PEG used in tablet coatings and as the active ingredient in osmotic laxatives (MiraLAX). Rare PEG allergies documented.
Propylene Glycol	Solvent/Humectant	⚠️ Yes — Propylene Glycol	An organic compound used as a solvent and humectant. Can cause contact dermatitis in sensitive individuals.
Propylparaben	Preservative	⚠️ Yes — Parabens	A paraben preservative used to prevent microbial growth. Can cause contact dermatitis in paraben-sensitive individuals.
Sucrose	Sweetener/Coating	⚠️ Yes — Sucrose	Common table sugar. Problematic for individuals with sucrose intolerance or congenital sucrase-isomaltase deficiency.
Citric Acid Monohydrate	pH Adjuster/Buffer	No	Citric acid in its hydrated form. Used to adjust acidity and as a buffering agent. Derived from citrus fruits or fermentation.
Corn Oil	Solvent/Vehicle	No	Oil extracted from corn germ, used as a solvent and vehicle in oral formulations. Must be avoided by individuals with corn allergy.
Edetate Disodium	Chelating Agent	No	Also known as EDTA. Binds metal ions to prevent degradation of active ingredients and preserve product stability.
Ethylcellulose	Coating/Binder	No	A cellulose derivative used for sustained-release coatings and as a binder. Plant-derived and water-insoluble.
Hamamelis Virginiana Top Water	Skin Conditioner	No	Witch hazel distillate, a plant-derived astringent used in topical formulations to soothe and tone the skin.
Hydrochloric Acid	pH Adjuster	No	A strong acid used in small amounts to adjust the pH of pharmaceutical solutions. Neutralized in the final product.
Polysorbate 80	Emulsifier/Solubilizer	No	A non-ionic surfactant used to dissolve and stabilize ingredients that do not mix well with water. Derived from sorbitol and oleic acid. Rare hypersensitivity reactions reported.
Sodium Hydroxide	pH Adjuster	No	A strong alkali used to adjust the pH of pharmaceutical solutions. Present only in trace amounts in the final product.
Sodium Polystyrene Sulfonate	—	No	—
Tragacanth	—	No	—
Xanthan Gum	Thickener/Stabilizer	No	A polysaccharide produced by bacterial fermentation, used to thicken and stabilize liquid and semi-solid formulations. Derived from corn sugar fermentation — may be relevant for corn-sensitive individuals.