| Coconut Oil | Emollient/Vehicle | ⚠️ Yes — Coconut | A plant-derived oil used as an emollient, vehicle, and solvent in topical and oral formulations. May be relevant for individuals with coconut allergy (rare but documented). |
| FD&C Yellow No. 5 | Colorant | ⚠️ Yes — Dye | A yellow azo dye. Common in asthma and aspirin-intolerant patients. One of the most frequently reported dye allergens. |
| 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. |
| Propylene Glycol | Solvent/Humectant | ⚠️ Yes — Propylene Glycol | An organic compound used as a solvent and humectant. Can cause contact dermatitis in sensitive individuals. |
| Soybean Oil | Solvent/Vehicle | ⚠️ Yes — Soy | Derived from soybeans. May trigger reactions in individuals with soy allergy. |
| .alpha.-tocopherol Acetate | Antioxidant | No | Vitamin E acetate. Used as an antioxidant to protect active ingredients from degradation during storage. |
| Acrylic Acid-2-ethylhexyl Acrylate-2-hydroxyethyl Acrylate-vinyl Acetate Copolymer (for Duro-tak 87-2070)? | Adhesive | No | A pressure-sensitive adhesive polymer used in transdermal patches to hold the patch to the skin. |
| Aluminum Oxide | Abrasive/Adsorbent | No | Alumina. Used as an adsorbent, abrasive, and processing aid in pharmaceutical manufacturing. |
| Carnauba Wax | Coating/Polish | No | A natural wax from the leaves of the Brazilian palm tree. Used to polish and gloss-coat tablets. Plant-derived. |
| D&C Red No. 21 Aluminum Lake | — | No | — |
| D&C Red No. 27 | Colorant | No | A synthetic red dye used in medications and cosmetics. May cause reactions in dye-sensitive individuals. |
| D&C Red No. 30 | Colorant | No | A synthetic red dye used in medications and topical products. May cause reactions in dye-sensitive individuals. |
| D&C Red No. 7 | — | No | — |
| 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. |
| Glyceryl Isostearate? | Emulsifier | No | A glycerin ester used as an emulsifier and skin-conditioning agent in topical formulations. |
| Glyceryl Stearate Se? | Emulsifier | No | Self-emulsifying glyceryl stearate. A lipid-based emulsifier used to stabilize creams and lotions. |
| Guinea Green B? | — | No | — |
| Hamamelis Virginiana Top Water | Skin Conditioner | No | Witch hazel distillate, a plant-derived astringent used in topical formulations to soothe and tone the skin. |
| High Density Polyethylene | Packaging Component | No | A plastic polymer used in transdermal patch components and packaging. Not a traditional excipient but may appear in product listings. |
| Magnesium Chloride | Electrolyte/Stabilizer | No | A magnesium salt used as an electrolyte in injectable solutions and as a stabilizer in some formulations. |
| Microcrystalline Wax? | Stiffening Agent | No | A petroleum-derived wax used to adjust consistency in ointments and as a coating agent. |
| N,n-dimethylacetamide? | Solvent | No | An organic solvent used in transdermal and topical formulations to dissolve active ingredients. |
| Phenoxyethanol | Preservative | No | A synthetic preservative used to prevent microbial growth in topical and some oral formulations. Can cause skin irritation in sensitive individuals. |
| Potassium Chloride | Tonicity Agent | No | A potassium salt used to adjust tonicity in injectable and ophthalmic solutions, and as a potassium supplement. |
| Shea Butter | Emollient | No | A fat extracted from the nut of the African shea tree. Used as an emollient and moisturizer in topical formulations. Tree nut-derived — may be relevant for individuals with tree nut allergies. |
| 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. |
| 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. |
| Tocopherol | Antioxidant | No | Natural vitamin E. Used as an antioxidant to protect active ingredients from oxidation and extend product shelf life. |