Preservative/Solvent
A preservative and solvent used in injectable and topical formulations.
Preservative
A paraben preservative used to prevent microbial growth. Can cause contact dermatitis in paraben-sensitive individuals.
Colorant
A synthetic blue dye. Less commonly allergenic than other dyes but reactions are documented.
Colorant
A widely used artificial red dye. Among the most common dye allergens.
Capsule Shell
Derived from animal collagen. Used in capsule shells. Not suitable for vegetarians/vegans or those with specific animal protein sensitivities.
Filler/Binder
Milk sugar used as a filler and binder in tablets and capsules. Derived from dairy — must be avoided by individuals with lactose intolerance or milk protein allergy.
Preservative
A preservative used to prevent microbial growth. Can cause allergic contact dermatitis in sensitive individuals.
Preservative
A paraben preservative used to prevent microbial growth. Can cause contact dermatitis in paraben-sensitive individuals.
Wetting Agent
A surfactant used to improve drug dissolution. Can cause skin irritation in some individuals.
Colorant
Lubricant
Emulsifier/Solubilizer
| Ingredient | Purpose | Common Allergen? |
|---|---|---|
| Benzyl Alcohol | Preservative/Solvent | ⚠️ Yes — Benzyl Alcohol |
| Butylparaben | Preservative | ⚠️ Yes — Parabens |
| FD&C Blue No. 1 | Colorant | ⚠️ Yes — Dye |
| FD&C Red No. 40 | Colorant | ⚠️ Yes — Dye |
| Gelatin | Capsule Shell | ⚠️ Yes — Animal |
| Lactose | Filler/Binder | ⚠️ Yes — Dairy |
| Methylparaben | Preservative | ⚠️ Yes — Parabens |
| Propylparaben | Preservative | ⚠️ Yes — Parabens |
| Sodium Lauryl Sulfate | Wetting Agent | ⚠️ Yes — Surfactant |
| D&C Red No. 28 | Colorant | No |
| Magnesium Stearate | Lubricant | No |
| Polysorbate 80 | Emulsifier/Solubilizer | No |
This medication contains ingredients flagged in the following groups. Patients with these sensitivities should consult their prescriber.
3 ingredients may contain mammalian-derived components:
Other versions of Diphenhydramine Hydrochloride that avoid allergens found in this formulation.