| 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. |
| Peg/ppg-18/18 Dimethicone | Emulsifier/Skin Conditioner | ⚠️ Yes — PEG | A silicone-based emulsifier combining PEG and polypropylene glycol with dimethicone. Used in topical formulations for smooth application. |
| Propylene Glycol? | Solvent/Humectant | ?Uncertain — Propylene Glycol | An organic compound used as a solvent and humectant. Can cause contact dermatitis in sensitive individuals. |
| Acetic Acid | pH Adjuster/Solvent | No | The acid in vinegar. Used to adjust pH and as a solvent in pharmaceutical formulations. |
| Croscarmellose? | Disintegrant | No | Cross-linked carboxymethylcellulose used to help tablets break apart rapidly. Plant-derived cellulose polymer. |
| 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. |
| Ethylhexyl Hydroxystearate? | Emollient | No | A synthetic ester used as an emollient and skin-conditioning agent in topical formulations. |
| 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. |
| Hexylene Glycol | Solvent/Humectant | No | A synthetic glycol used as a solvent, humectant, and viscosity reducer 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. |
| Octyldodecanol? | Emollient/Solvent | No | A branched-chain fatty alcohol used as an emollient, solvent, and viscosity adjuster in topical formulations. |
| Phenazopyridine Hydrochloride? | — | No | — |
| Phenoxyethanol | Preservative | No | A synthetic preservative used to prevent microbial growth in topical and some oral formulations. Can cause skin irritation in sensitive individuals. |
| Pineapple | — | No | — |
| Propylene Carbonate | Solvent | No | An organic solvent used in transdermal patches and topical formulations to dissolve active ingredients. |
| Safflower Oil | Emollient/Vehicle | No | A plant-derived oil used as an emollient and vehicle in topical and oral formulations. |
| Silicon Dioxide | Glidant | No | A mineral (silica) used to improve powder flow during tablet manufacturing. Also called colloidal silicon dioxide. |
| Sodium Chloride | Tonicity Agent | No | Common table salt. Used to adjust the osmotic pressure of injectable and ophthalmic solutions to match body fluids. |
| Sodium Hydroxide | pH Adjuster | No | A strong alkali used to adjust the pH of pharmaceutical solutions. Present only in trace amounts in the final product. |
| Titanium Dioxide | Colorant/Opacifier | No | A white pigment used for coating opacity. Under regulatory review in some countries. |
| Tocopherol | Antioxidant | No | Natural vitamin E. Used as an antioxidant to protect active ingredients from oxidation and extend product shelf life. |