Provita Berberine TPGS is explicitly not vegan friendly, a crucial detail for individuals adhering to a plant-based diet or those with specific dietary restrictions. The primary reason for this classification is the presence of an allergen warning for chitosan on the product's label. Chitosan is a natural polysaccharide derived from the shells of crustaceans, and as such, it may contain trace amounts of shellfish, specifically crab. For strict vegans, the inclusion of any animal-derived product, even in trace amounts, renders a supplement unsuitable. This extends to ingredients sourced from shellfish, which are undeniably animal products. Beyond vegan dietary considerations, the chitosan content poses a significant health concern for individuals with shellfish allergies. Shellfish is a common allergen, and even minuscule traces can trigger adverse reactions in sensitive individuals. Therefore, the allergen warning for chitosan, which may contain crab, means that Provita Berberine TPGS should be avoided by anyone with a shellfish allergy. This highlights the critical importance of thoroughly reading supplement labels and ingredient lists, especially for consumers with specific dietary requirements or known allergies. Misinterpreting or overlooking such warnings can have direct implications for one's dietary choices and health. In summary, due to the chitosan derived from crustaceans with potential crab traces, Provita Berberine TPGS is not suitable for vegans or individuals with shellfish allergies, emphasizing the need for diligent label checking.