| Castor Oil | Solvent/Emulsifier | ⚠️ Yes — Castor Oil | Derived from castor beans. Used in liquid and injectable formulations. Allergic reactions are rare but documented. |
| 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. |
| Sodium Benzoate | Preservative | ⚠️ Yes — Sodium Benzoate | A food preservative. Can cause urticaria and exacerbate asthma in sensitive individuals. |
| Soybean Oil | Solvent/Vehicle | ⚠️ Yes — Soy | Derived from soybeans. May trigger reactions in individuals with soy allergy. |
| Allantoin | Skin Protectant | No | A compound that promotes wound healing and cell regeneration. Used as a skin protectant and soothing agent in topical formulations. |
| Aminomethylpropanol | pH Adjuster | No | An amino alcohol used to neutralize carbomer gels and adjust pH in topical formulations. |
| Bentonite | — | No | — |
| Beta Carotene | — | No | — |
| 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. |
| Carbon Dioxide? | Propellant/Preservative | No | Used as a propellant in aerosol products and to displace oxygen in packaging to preserve product stability. |
| Citric Acid Monohydrate | pH Adjuster/Buffer | No | Citric acid in its hydrated form. Used to adjust acidity and as a buffering agent. Derived from citrus fruits or fermentation. |
| Dibutyl Sebacate? | Plasticizer | No | A plasticizer used to make tablet coatings more flexible and resistant to cracking. |
| Diethyl Phthalate? | — | No | — |
| Edetic Acid? | — | No | — |
| Gluconolactone | — | No | — |
| 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. |
| Hydrogenated Soybean Lecithin | Emulsifier | No | A hydrogenated form of soy lecithin used as an emulsifier and stabilizer. Derived from soy — must be avoided by individuals with soy allergy. |
| 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. |
| Levomenthol? | Counterirritant/Flavoring | No | The natural isomer of menthol. Produces a cooling sensation and is used as a counterirritant and flavoring agent. |
| Lime Oil, Cold Pressed? | — | No | — |
| Limonene, (+)- | Fragrance/Solvent | No | A citrus-derived terpene used as a fragrance component and solvent. Can cause contact sensitization in some individuals. |
| 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. |
| Orange Peel | — | No | — |
| Polysorbate 80 | Emulsifier/Solubilizer | No | A non-ionic surfactant used to dissolve and stabilize ingredients that do not mix well with water. Derived from sorbitol and oleic acid. Rare hypersensitivity reactions reported. |
| Potassium Metaphosphate | Buffer/Stabilizer | No | A potassium phosphate salt used as a buffering agent and stabilizer in pharmaceutical formulations. |
| Potassium Sorbate | Preservative | No | A potassium salt of sorbic acid used to inhibit mold and yeast growth in pharmaceutical formulations. |
| 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 Hydroxide | pH Adjuster | No | A strong alkali used to adjust the pH of pharmaceutical solutions. Present only in trace amounts in the final product. |
| Sodium Stearyl Fumarate | Lubricant | No | A tablet lubricant used as an alternative to magnesium stearate. Vegetable-derived. |
| Soybean Lecithin | Emulsifier | No | A phospholipid mixture extracted from soybeans, used as an emulsifier and wetting agent. Derived from soy — must be avoided by individuals with soy allergy. |
| Tocopherol | Antioxidant | No | Natural vitamin E. Used as an antioxidant to protect active ingredients from oxidation and extend product shelf life. |
| 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. |