| Benzoic Acid? | Preservative | ?Uncertain — Benzoic Acid | A preservative related to sodium benzoate. Same allergy cross-reactivity concerns. |
| Carboxymethylcellulose Sodium | Thickener/Stabilizer | ⚠️ Yes — CMC | A cellulose derivative used as a thickener. Rare CMC reactions reported in medical literature. |
| Cetostearyl Alcohol | Emulsifier/Stiffening Agent | ⚠️ Yes — Stearyl Alcohol | 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. |
| Cetyl Alcohol? | Emulsifier/Thickener | ?Uncertain — Cetyl Alcohol | A fatty alcohol used in topical formulations. Can cause contact dermatitis. |
| Medium-chain Triglycerides | Solvent/Vehicle | ⚠️ Yes — Coconut | Fatty acid esters derived from coconut or palm kernel oil. Used as a solvent and vehicle in oral and topical formulations. May be relevant for individuals with coconut sensitivity. |
| Propylene Glycol | Solvent/Humectant | ⚠️ Yes — Propylene Glycol | An organic compound used as a solvent and humectant. Can cause contact dermatitis in sensitive individuals. |
| Stearyl Alcohol | Emulsifier/Thickener | ⚠️ Yes — Stearyl Alcohol | A fatty alcohol used in creams and ointments. Can cause contact dermatitis. |
| .alpha.-tocopherol Acetate | Antioxidant | No | Vitamin E acetate. Used as an antioxidant to protect active ingredients from degradation during storage. |
| Acrylic Acid-2-ethylhexyl Acrylate-2-hydroxyethyl Acrylate-vinyl Acetate Copolymer (for Duro-tak 87-2070)? | Adhesive | No | A pressure-sensitive adhesive polymer used in transdermal patches to hold the patch to the skin. |
| Anhydrous Dextrose | — | No | — |
| 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 Glycerides? | Emollient/Emulsifier | No | Glyceride esters derived from corn oil, used as emollients and co-emulsifiers. Corn-derived — may be relevant for corn-sensitive individuals. |
| Disodium Citrate Sesquihydrate | Buffer | No | A sodium salt of citric acid used as a buffering agent to maintain pH stability in pharmaceutical solutions. |
| Docosanol | Antiviral/Emollient | No | A fatty alcohol used as the active ingredient in cold sore treatments and as an emollient in topical formulations. |
| Ferric Oxide Yellow | Colorant | No | Yellow iron oxide pigment used in tablet coatings and capsule shells. A mineral-based colorant. |
| Gluceptate Sodium | — | No | — |
| Glyceryl Ricinoleate? | Emulsifier/Emollient | No | A glyceride ester of ricinoleic acid (from castor oil) used as an emulsifier and skin-conditioning agent. |
| Hamamelis Virginiana Top Water | Skin Conditioner | No | Witch hazel distillate, a plant-derived astringent used in topical formulations to soothe and tone the skin. |
| Hydrogenated Soybean Lecithin | Emulsifier | No | A hydrogenated form of soy lecithin used as an emulsifier and stabilizer. Derived from soy — must be avoided by individuals with soy allergy. |
| Isostearic Acid | Emollient/Emulsifier | No | A branched-chain fatty acid used as an emollient and co-emulsifier in topical formulations. |
| Magnesium Aluminum Silicate? | Suspending Agent/Thickener | No | A natural clay mineral used to thicken and stabilize pharmaceutical suspensions and topical formulations. |
| Methyl Laurate? | Emollient/Solvent | No | A fatty acid ester used as an emollient and solvent in topical formulations. |
| Microcrystalline Cellulose | Filler/Binder | No | Refined wood pulp used as a filler and binder. Generally inert and well-tolerated. |
| Myristic Acid | — | No | — |
| Octyldodecanol | Emollient/Solvent | No | A branched-chain fatty alcohol used as an emollient, solvent, and viscosity adjuster in topical formulations. |
| Polyglyceryl-3 Oleate | Emulsifier | No | A polyglycerol ester used as a non-ionic emulsifier in topical formulations. |
| Sodium Aluminosilicate? | — | No | — |
| Sodium C10-18 Alkanesulfonates | Surfactant | No | An anionic surfactant used as an emulsifier and cleansing agent in topical formulations. |
| Stearic Acid | Lubricant | No | A fatty acid used as a lubricant in tablet manufacturing. |
| Tert-butyl Alcohol | — | 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. |