Leuko Capsules belongs to a class of medications known as antihistamines. It is used to treat a variety of allergy disorders such as hay fever, conjunctivitis, and certain skin reactions such as eczema, hives, and bite and sting reactions. It also helps to ease watery eyes, a runny nose, sneezing, and itching. The Leuko Capsules are safe to consume with or without meals. The dose required by may differ depending on the purpose for which the patient is taking it.