Can effervescent vitamin C tablets cause allergies?

Vitamin C effervescent tablets may cause allergic reactions, especially in individuals with allergic constitutions. The vitamin C in effervescent tablets has certain antigenicity and may trigger an immune response, leading to the occurrence of allergic symptoms. These allergic symptoms may manifest as mild skin redness and itching; in severe cases, systemic allergic reactions may even occur, such as throat swelling and difficulty breathing. Therefore, before taking vitamin C effervescent tablets, individuals are advised to determine whether they have a history of allergy to vitamin C or other ingredients in the effervescent tablets and to closely monitor any bodily reactions. If allergic symptoms occur, discontinue use immediately and seek medical attention. Additionally, it is important to follow medical advice or instructions provided with the medication to avoid excessive or improper use, thereby reducing the occurrence of adverse reactions.