| Castor Oil? | Solvent/Emulsifier | ?Uncertain — Castor Oil | Derived from castor beans. Used in liquid and injectable formulations. Allergic reactions are rare but documented. |
| Cetostearyl Alcohol | Emulsifier/Stiffening Agent | ⚠️ Yes — Stearyl Alcohol | A mixture of cetyl and stearyl alcohols (fatty alcohols, not drinking alcohol). Used to thicken and stabilize creams and ointments. Can cause contact dermatitis in sensitive individuals. |
| 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). |
| Sesame Oil | Vehicle/Solvent | ⚠️ Yes — Sesame | A seed oil used as a vehicle in some injectable medications and topical formulations. Sesame is a recognized major food allergen (FASTER Act, 2023) — patients with sesame allergy should verify all formulations. |
| White Wax | Stiffening Agent | ⚠️ Yes — Insect | Bleached beeswax. Used to thicken ointments and creams. Animal-derived (from bees) — relevant for vegan patients. |
| Calcium Phosphate, Dibasic? | Binder | No | A calcium salt used as a binder and filler in tablet manufacturing. |
| Canada Balsam? | — | No | — |
| Carbomer Homopolymer Type C (allyl Pentaerythritol Crosslinked) | Thickener/Gelling Agent | No | A specific cross-linked acrylic acid polymer used to create clear gels for topical formulations. |
| Dimethicone 20 | Skin Protectant | No | A silicone-based polymer used as a skin protectant, emollient, and anti-foaming agent in topical formulations. |
| Disodium Citrate Sesquihydrate | Buffer | No | A sodium salt of citric acid used as a buffering agent to maintain pH stability in pharmaceutical solutions. |
| 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 Monostearate | Emulsifier | No | An emulsifier that helps oil and water mix in creams and ointments. Derived from glycerin and stearic acid. |
| Hamamelis Virginiana Top Water | Skin Conditioner | No | Witch hazel distillate, a plant-derived astringent used in topical formulations to soothe and tone the skin. |
| Lemon Oil, Cold Pressed | Flavoring/Fragrance | No | A citrus essential oil used as a flavoring and fragrance agent. Contains limonene, which can cause contact sensitization. |
| 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. |
| Nutmeg Oil | — | No | — |
| Palm Oil | — | No | — |
| Peppermint Oil | Flavoring Agent | No | A natural essential oil used as a flavoring and cooling agent. Contains menthol. May cause sensitivity in individuals with mint allergy. |
| Phenoxyethanol | Preservative | No | A synthetic preservative used to prevent microbial growth in topical and some oral formulations. Can cause skin irritation in sensitive individuals. |
| Pine Needle Oil (pinus Sylvestris) | — | No | — |
| Polyoxyl 20 Cetostearyl Ether | Emulsifier | No | A non-ionic surfactant (Cetomacrogol) used to emulsify and stabilize creams and ointments. |
| Safflower Oil | Emollient/Vehicle | No | A plant-derived oil used as an emollient and vehicle in topical and oral formulations. |
| 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. |
| Tocopherol | Antioxidant | No | Natural vitamin E. Used as an antioxidant to protect active ingredients from oxidation and extend product shelf life. |