Solvent/Preservative
Ethanol (ethyl alcohol) used as a solvent, preservative, or extraction agent. Present in many liquid formulations. May be relevant for patients avoiding alcohol for medical or religious reasons.
Emulsifier/Stiffening Agent
A mixture of cetyl and stearyl alcohols (fatty alcohols, not drinking alcohol). Used to thicken and stabilize creams and ointments. Can cause contact dermatitis in sensitive individuals.
Emulsifier/Thickener
A fatty alcohol used in topical formulations. Can cause contact dermatitis.
Preservative
A preservative used to prevent microbial growth. Can cause allergic contact dermatitis in sensitive individuals.
pH Adjuster
Skin Protectant/Emollient
Chelating Agent
Emollient
Emulsifier
Skin Conditioner
| Ingredient | Purpose | Common Allergen? |
|---|---|---|
| Alcohol | Solvent/Preservative | ⚠️ Yes — Alcohol |
| Cetostearyl Alcohol | Emulsifier/Stiffening Agent | ⚠️ Yes — Stearyl Alcohol |
| Cetyl Alcohol? | Emulsifier/Thickener | Uncertain — Cetyl Alcohol |
| Methylparaben | Preservative | ⚠️ Yes — Parabens |
| Aminomethylpropanol | pH Adjuster | No |
| Calcium Phosphate? | — | No |
| Carbomer Copolymer Type B (allyl Pentaerythritol Crosslinked) | — | No |
| Dimethicone 200 | Skin Protectant/Emollient | No |
| Distearoylphosphatidylcholine, Dl-? | — | No |
| Edetate Disodium | Chelating Agent | No |
| Ethylhexyl Hydroxystearate? | Emollient | No |
| Glyceryl Monostearate | Emulsifier | No |
| Hamamelis Virginiana Top Water | Skin Conditioner | No |
| Steareth-21 | — | No |
This medication contains ingredients flagged in the following groups. Patients with these sensitivities should consult their prescriber.
Other versions of Lidocaine HCl 4%, Menthol 1% that avoid allergens found in this formulation.