Can effervescent vitamin C tablets cause allergies?

Vitamin C effervescent tablets may cause allergic reactions, especially in individuals with a predisposition to allergies. The vitamin C and excipients in the effervescent tablets, such as lactose, citric acid, and sodium bicarbonate, may act as allergens, triggering immune responses and leading to allergic symptoms. Allergic reactions can vary from person to person and may include mild symptoms such as skin redness and itching, as well as severe systemic allergic reactions, such as throat swelling and difficulty breathing. Therefore, before taking vitamin C effervescent tablets, individuals should be fully aware of their allergy history and pay attention to any bodily reactions. If allergic symptoms occur, discontinue use immediately and seek medical attention.