Having any autoimmune disease (lupus, MS, etc.) Suffering from diseases that interfere with the absorption of vitamin A. Consumers of vitamin A supplements Patients with severe renal insufficiency and dialysis Patients with underlying liver disease Pregnancy Lactation

Having any autoimmune disease (lupus, MS, etc.) Suffering from diseases that interfere with the absorption of vitamin A. Consumers of vitamin A supplements Patients with severe renal insufficiency and dialysis Patients with underlying liver disease Pregnancy Lactation