| FD&C Yellow No. 6? | Colorant | ?Uncertain — Dye | An artificial colorant (also called Sunset Yellow). May cause reactions in people sensitive to artificial dyes. |
| Sodium Benzoate | Preservative | ⚠️ Yes — Sodium Benzoate | A food preservative. Can cause urticaria and exacerbate asthma in sensitive individuals. |
| .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 Hydroxide | Antacid/Adjuvant | No | An aluminum salt used as an antacid ingredient and as an adjuvant in some vaccine formulations. |
| Calcium Chloride Anhydrous? | — | No | — |
| Calcium Citrate | — | No | — |
| Canada Balsam? | — | No | — |
| Citrus Sinensis Flower Oil? | — | 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 12500? | — | No | — |
| 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. |
| 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. |
| Lavender Oil | Fragrance | No | An essential oil from lavender flowers used as a fragrance and for its calming properties. Can cause contact sensitization in some individuals. |
| Limonene, (+)- | Fragrance/Solvent | No | A citrus-derived terpene used as a fragrance component and solvent. Can cause contact sensitization in some individuals. |
| Metacresol? | — | No | — |
| Metanil Yellow? | Colorant | No | A synthetic yellow dye used as an indicator and colorant in pharmaceutical formulations. |
| 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. |
| Polylactide? | — | No | — |
| Stearic Acid | Lubricant | No | A fatty acid used as a lubricant in tablet manufacturing. |
| Tea Tree Oil | Antimicrobial/Fragrance | No | An essential oil from Melaleuca alternifolia with antimicrobial properties. Can cause contact sensitization in some individuals. |