| .alpha.-tocopherol Acetate | Antioxidant | No | Vitamin E acetate. Used as an antioxidant to protect active ingredients from degradation during storage. |
| Aluminum Hydroxide | Antacid/Adjuvant | No | An aluminum salt used as an antacid ingredient and as an adjuvant in some vaccine formulations. |
| Butylated Hydroxytoluene | Antioxidant | No | BHT. A synthetic antioxidant used to prevent oxidative degradation of fats and oils in pharmaceutical products. Rare contact sensitivity reported. |
| Butylene Glycol | Humectant/Solvent | No | A synthetic glycol used as a humectant and solvent in topical formulations. Helps products spread smoothly on skin. |
| Cyclomethicone 5 | Emollient/Carrier | No | A volatile silicone that evaporates quickly, leaving a smooth feel. Used as a carrier and emollient in topical products. |
| Dimethylaminoethyl Methacrylate - Butyl Methacrylate - Methyl Methacrylate Copolymer? | Coating Agent | No | A methacrylic polymer (Eudragit E) that dissolves in acidic conditions. Used for taste-masking and moisture-protective coatings. |
| 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. |
| 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. |
| Isopropyl Isostearate? | Emollient | No | A synthetic ester used as an emollient and skin-conditioning agent in topical formulations. |
| Lanolin Oil? | Emollient | No | An oil derived from sheep wool (lanolin). Used as an emollient and skin conditioner. Animal-derived — relevant for vegan patients. Can cause contact dermatitis in lanolin-sensitive individuals. |
| Laureth-2 | Emulsifier/Solubilizer | No | A non-ionic surfactant used as an emulsifier and solubilizer in topical formulations. |
| Magnesium Sulfate | Osmotic Agent | No | Epsom salt. Used as an osmotic agent, drying agent, and in injectable formulations for electrolyte supplementation. |
| Metanil Yellow? | Colorant | No | A synthetic yellow dye used as an indicator and colorant in pharmaceutical formulations. |
| Methyl Salicylate | Flavoring/Counterirritant | No | Oil of wintergreen. Used as a flavoring agent and topical counterirritant (creates a warming sensation). Can cause sensitivity in aspirin-intolerant individuals. |
| Phenoxyethanol | Preservative | No | A synthetic preservative used to prevent microbial growth in topical and some oral formulations. Can cause skin irritation in sensitive individuals. |
| Propylene Carbonate | Solvent | No | An organic solvent used in transdermal patches and topical formulations to dissolve active ingredients. |
| Silica Dimethyl Silylate | — | No | — |
| Sodium Stearyl Fumarate? | Lubricant | No | A tablet lubricant used as an alternative to magnesium stearate. Vegetable-derived. |
| Talc | Glidant/Lubricant | No | A mineral used to improve powder flow in manufacturing. |
| Titanium Dioxide | Colorant/Opacifier | No | A white pigment used for coating opacity. Under regulatory review in some countries. |
| 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. |