| 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. |
| Glyceryl Stearate/PEG-100 Stearate | Emulsifier | ⚠️ Yes — PEG | A self-emulsifying blend of glyceryl stearate and PEG-100 stearate used in creams and lotions. Contains a PEG component. |
| PEG-100 Monostearate | Emulsifier | ⚠️ Yes — PEG | A PEG-based emulsifier used to stabilize oil-in-water emulsions in creams and lotions. Contains a polyethylene glycol component. |
| Propylene Glycol? | Solvent/Humectant | ?Uncertain — Propylene Glycol | An organic compound used as a solvent and humectant. Can cause contact dermatitis in sensitive individuals. |
| Sucrose | Sweetener/Coating | ⚠️ Yes — Sucrose | Common table sugar. Problematic for individuals with sucrose intolerance or congenital sucrase-isomaltase deficiency. |
| .alpha.-tocopherol Acetate | Antioxidant | No | Vitamin E acetate. Used as an antioxidant to protect active ingredients from degradation during storage. |
| Aluminum Stearate | — | No | — |
| Anethole? | — | No | — |
| 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. |
| Caffeine | — | No | — |
| Ceteth-2 | — | No | — |
| Cyclomethicone 5 | Emollient/Carrier | No | A volatile silicone that evaporates quickly, leaving a smooth feel. Used as a carrier and emollient in topical products. |
| 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. |
| Glyceryl Monostearate | Emulsifier | No | An emulsifier that helps oil and water mix in creams and ointments. Derived from glycerin and stearic acid. |
| Hamamelis Virginiana Top Water | Skin Conditioner | No | Witch hazel distillate, a plant-derived astringent used in topical formulations to soothe and tone the skin. |
| Hexylene Glycol | Solvent/Humectant | No | A synthetic glycol used as a solvent, humectant, and viscosity reducer in topical formulations. |
| 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. |
| Magnesium Carbonate? | Antacid/Adsorbent | No | A magnesium salt used as an antacid and adsorbent. Also used as a drying agent in tablet manufacturing. |
| Phenoxyethanol | Preservative | No | A synthetic preservative used to prevent microbial growth in topical and some oral formulations. Can cause skin irritation in sensitive individuals. |
| Silicon Dioxide | Glidant | No | A mineral (silica) used to improve powder flow during tablet manufacturing. Also called colloidal silicon dioxide. |
| Sodium Stearate | — | No | — |
| Sorbitan Tristearate | Emulsifier | No | A non-ionic surfactant (Span 65) used to stabilize water-in-oil emulsions in topical formulations. |
| Sorbitol | Sweetener/Humectant | No | A sugar alcohol used as a sweetener and humectant. Can cause gastrointestinal symptoms (bloating, diarrhea) in sensitive individuals or at high doses. Relevant for those following a low-FODMAP diet. |
| Steareth-2 | — | No | — |
| Steareth-20 | — | No | — |
| Stearic Acid | Lubricant | No | A fatty acid used as a lubricant in tablet manufacturing. |
| Triethyl Citrate? | Plasticizer | No | A citric acid ester used as a plasticizer in enteric coatings and controlled-release formulations. |
| 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. |