| Alcohol | Solvent/Preservative | ⚠️ Yes — Alcohol | Ethanol (ethyl alcohol) used as a solvent, preservative, or extraction agent. Present in many liquid formulations. May be relevant for patients avoiding alcohol for medical or religious reasons. |
| Dipropylene Glycol | Solvent/Humectant | ⚠️ Yes — Propylene Glycol | A synthetic glycol used as a solvent and humectant in topical formulations. |
| Isostearyl Alcohol? | Emollient/Emulsifier | ?Uncertain — Stearyl Alcohol | A branched-chain fatty alcohol used as an emollient and emulsifier in topical formulations. |
| 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. |
| .alpha.-tocopherol | Antioxidant | No | The most biologically active form of vitamin E. Used to protect formulations from oxidative degradation. |
| Aluminum Hydroxide | Antacid/Adjuvant | No | An aluminum salt used as an antacid ingredient and as an adjuvant in some vaccine formulations. |
| Aluminum Oxide | Abrasive/Adsorbent | No | Alumina. Used as an adsorbent, abrasive, and processing aid in pharmaceutical manufacturing. |
| 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. |
| D&C Red No. 27 | Colorant | No | A synthetic red dye used in medications and cosmetics. May cause reactions in dye-sensitive individuals. |
| Dimethicone 20 | Skin Protectant | No | A silicone-based polymer used as a skin protectant, emollient, and anti-foaming agent in topical formulations. |
| 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. |
| 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. |
| Glyceryl Isostearate | Emulsifier | No | A glycerin ester used as an emulsifier and skin-conditioning agent in topical formulations. |
| Hamamelis Virginiana Top Water | Skin Conditioner | No | Witch hazel distillate, a plant-derived astringent used in topical formulations to soothe and tone the skin. |
| Magnesium Carbonate? | Antacid/Adsorbent | No | A magnesium salt used as an antacid and adsorbent. Also used as a drying agent in tablet manufacturing. |
| Microcrystalline Wax? | Stiffening Agent | No | A petroleum-derived wax used to adjust consistency in ointments and as a coating agent. |
| 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. |
| Stearalkonium Chloride? | Conditioning Agent | No | A quaternary ammonium compound used as a conditioning and antistatic agent in topical formulations. |
| Stearic Acid | Lubricant | No | A fatty acid used as a lubricant in tablet manufacturing. |
| Talc | Glidant/Lubricant | No | A mineral used to improve powder flow in manufacturing. |