Diphenhydramine Hydrochloride 12.5 mg

LIQUIDORALAxcentria Pharmaceuticals, LLC.NDC: 49743-3003Updated: Mar 2026

Active Ingredient

⚠️ 2 ingredients flagged as common allergens

Polyethylene Glycol

⚠️ Yes — PEG

Coating/Plasticizer

Sodium Benzoate

⚠️ Yes — Sodium Benzoate

Preservative

Citric Acid Monohydrate

pH Adjuster/Buffer

Disodium Citrate Sesquihydrate

Buffer

Glycerin

Humectant/Solvent

Sodium Chloride

Tonicity Agent

Ingredient	Purpose	Common Allergen?	Description
Polyethylene Glycol	Coating/Plasticizer	⚠️ Yes — PEG	A polymer used in coatings and as a plasticizer. Rare but documented allergic reactions, including anaphylaxis in sensitive individuals.
Sodium Benzoate	Preservative	⚠️ Yes — Sodium Benzoate	A food preservative. Can cause urticaria and exacerbate asthma in sensitive individuals.
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.
Disodium Citrate Sesquihydrate	Buffer	No	A sodium salt of citric acid used as a buffering agent to maintain pH stability in pharmaceutical solutions.
Glycerin	Humectant/Solvent	No	A sugar alcohol that attracts moisture. Used as a humectant, solvent, and sweetener in many oral and topical medications. Generally well tolerated.
Sodium Chloride	Tonicity Agent	No	Common table salt. Used to adjust the osmotic pressure of injectable and ophthalmic solutions to match body fluids.