| Benzoic Acid | Preservative | ⚠️ Yes — Benzoic Acid | A preservative related to sodium benzoate. Same allergy cross-reactivity concerns. |
| Benzyl Alcohol | Preservative/Solvent | ⚠️ Yes — Benzyl Alcohol | A preservative and solvent used in injectable and topical formulations. |
| Carboxymethylcellulose Sodium | Thickener/Stabilizer | ⚠️ Yes — CMC | A cellulose derivative used as a thickener. Rare CMC reactions reported in medical literature. |
| Propylene Glycol? | Solvent/Humectant | ?Uncertain — Propylene Glycol | An organic compound used as a solvent and humectant. Can cause contact dermatitis in sensitive individuals. |
| 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. |
| Menthol | Flavoring/Counterirritant | No | A compound derived from peppermint oil that produces a cooling sensation. Used as a flavoring agent and topical counterirritant. |
| Potassium Metaphosphate | Buffer/Stabilizer | No | A potassium phosphate salt used as a buffering agent and stabilizer in pharmaceutical formulations. |
| Sodium Gluconate | — | No | — |
| Sodium Lauroyl Sarcosinate | Surfactant/Cleanser | No | A mild anionic surfactant derived from sarcosine (an amino acid) used as a cleansing and foaming agent. |
| Sodium Phosphate, Dibasic, Anhydrous | Buffer | No | A phosphate salt used as a buffering agent to maintain pH stability in pharmaceutical solutions. |
| Sorbitol | Sweetener/Humectant | No | A sugar alcohol used as a sweetener and humectant. Can cause gastrointestinal symptoms (bloating, diarrhea) in sensitive individuals or at high doses. Relevant for those following a low-FODMAP diet. |
| Sucralose | Sweetener | No | A non-caloric artificial sweetener approximately 600 times sweeter than sugar. Used to improve taste in oral medications. |
| Titanium Dioxide | Colorant/Opacifier | No | A white pigment used for coating opacity. Under regulatory review in some countries. |
| 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. |
| Xylitol | Sweetener | No | A sugar alcohol used as a sweetener in chewable tablets and oral formulations. Can cause GI symptoms (bloating, diarrhea) in sensitive individuals. |
| Zinc Acetate | — | No | — |