| Cetyl Alcohol | Emulsifier/Thickener | ⚠️ Yes — Cetyl Alcohol | A fatty alcohol used in topical formulations. Can cause contact dermatitis. |
| Methylparaben | Preservative | ⚠️ Yes — Parabens | A preservative used to prevent microbial growth. Can cause allergic contact dermatitis in sensitive individuals. |
| Peg/ppg-18/18 Dimethicone? | Emulsifier/Skin Conditioner | ?Uncertain — PEG | A silicone-based emulsifier combining PEG and polypropylene glycol with dimethicone. Used in topical formulations for smooth application. |
| Propylene Glycol | Solvent/Humectant | ⚠️ Yes — Propylene Glycol | An organic compound used as a solvent and humectant. Can cause contact dermatitis in sensitive individuals. |
| Propylene Glycol Monopalmitostearate | — | ⚠️ Yes — Propylene Glycol | — |
| Propylparaben | Preservative | ⚠️ Yes — Parabens | A paraben preservative used to prevent microbial growth. Can cause contact dermatitis in paraben-sensitive individuals. |
| Ascorbyl Palmitate | Antioxidant | No | A fat-soluble form of vitamin C used as an antioxidant in pharmaceutical formulations to prevent oxidation of fats and oils. |
| Barium Sulfate | — | No | — |
| Butylene Glycol | Humectant/Solvent | No | A synthetic glycol used as a humectant and solvent in topical formulations. Helps products spread smoothly on skin. |
| Cetyl Palmitate | — | No | — |
| Dimethicone 20 | Skin Protectant | No | A silicone-based polymer used as a skin protectant, emollient, and anti-foaming agent in topical formulations. |
| Edetate Disodium | Chelating Agent | No | Also known as EDTA. Binds metal ions to prevent degradation of active ingredients and preserve product stability. |
| Ferric Oxide Red | Colorant | No | Red iron oxide pigment used in tablet coatings and capsule shells. A mineral-based colorant, distinct from FD&C synthetic dyes. |
| Ferric Oxide Yellow | Colorant | No | Yellow iron oxide pigment used in tablet coatings and capsule shells. A mineral-based colorant. |
| Ferrosoferric Oxide | Colorant | No | Black iron oxide used as a pigment in tablet coatings and capsule shells. Derived from iron, not from food allergen sources. |
| 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. |
| Hamamelis Virginiana Top Water | Skin Conditioner | No | Witch hazel distillate, a plant-derived astringent used in topical formulations to soothe and tone the skin. |
| Levomenthol? | Counterirritant/Flavoring | No | The natural isomer of menthol. Produces a cooling sensation and is used as a counterirritant and flavoring agent. |
| Magnesium Aluminum Silicate | Suspending Agent/Thickener | No | A natural clay mineral used to thicken and stabilize pharmaceutical suspensions and topical formulations. |
| Microcrystalline Wax? | Stiffening Agent | No | A petroleum-derived wax used to adjust consistency in ointments and as a coating agent. |
| Oleic Acid | Surfactant/Stabilizer | No | Surfactant in MDI formulations that helps drug particles stay suspended in the propellant. |
| Phenol? | Preservative/Antiseptic | No | An antimicrobial agent used as a preservative in injectable formulations and as an antiseptic in topical products. |
| Polysorbate 20 | Emulsifier/Solubilizer | No | A non-ionic surfactant similar to polysorbate 80 but derived from lauric acid. Used to solubilize and stabilize formulations. |
| Silicon Dioxide | Glidant | No | A mineral (silica) used to improve powder flow during tablet manufacturing. Also called colloidal silicon dioxide. |
| Sodium Pyrrolidone Carboxylate | Humectant | No | Sodium PCA. A natural moisturizing factor component used as a humectant in topical formulations. |
| Squalane | Emollient | No | A saturated hydrocarbon used as an emollient and moisturizer. Originally from shark liver oil, now commonly plant-derived (olive or sugarcane). |
| Stearic Diethanolamide | — | No | — |
| Tocopherol | Antioxidant | No | Natural vitamin E. Used as an antioxidant to protect active ingredients from oxidation and extend product shelf life. |
| Trolamine | Emulsifier/pH Adjuster | No | Triethanolamine. Used as an emulsifier and pH adjuster in topical creams and lotions. |
| Vitamin E Polyethylene Glycol Succinate? | Solubilizer/Emulsifier | No | A water-soluble form of vitamin E (also called TPGS) used to improve the absorption of poorly soluble drugs. Contains a PEG component. |
| 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. |