<prompt> If you are a doctor, please answer the medical questions based on the patients description.iam 34 years old malei am taking avil 50 mg 10 tablets daily i am observing bad effects on my health i want to know detail causes of using this tablet  <response>: Evil is a sedating antihistamine. It can be given for allergic conditions including allergic rhinitisrunning nose, sneezing, , urticariarashes in the skin with itching, conjunctivitis and pruritic. However, it can cause sedation, inability to concentrate, Chat Doctor. These days there are non sedating antihistamines available which would be a better alternative if u need to take one for a longer period of time. 