Colorant
A widely used artificial red dye. Among the most common dye allergens.
Preservative
A preservative used to prevent microbial growth. Can cause allergic contact dermatitis in sensitive individuals.
Solvent/Humectant
An organic compound used as a solvent and humectant. Can cause contact dermatitis in sensitive individuals.
Preservative
A paraben preservative used to prevent microbial growth. Can cause contact dermatitis in paraben-sensitive individuals.
Sweetener/Coating
Common table sugar. Problematic for individuals with sucrose intolerance or congenital sucrase-isomaltase deficiency.
pH Adjuster/Buffer
Buffer
Skin Conditioner
Sweetener
| Ingredient | Purpose | Common Allergen? |
|---|---|---|
| FD&C Red No. 40 | Colorant | ⚠️ Yes — Dye |
| Methylparaben | Preservative | ⚠️ Yes — Parabens |
| Propylene Glycol | Solvent/Humectant | ⚠️ Yes — Propylene Glycol |
| Propylparaben | Preservative | ⚠️ Yes — Parabens |
| Sucrose | Sweetener/Coating | ⚠️ Yes — Sucrose |
| Anhydrous Citric Acid | pH Adjuster/Buffer | No |
| Disodium Citrate Sesquihydrate | Buffer | No |
| Hamamelis Virginiana Top Water | Skin Conditioner | No |
| Sucralose | Sweetener | No |
This medication contains ingredients flagged in the following groups. Patients with these sensitivities should consult their prescriber.
Other versions of Diphenhydramine HCl that avoid allergens found in this formulation.