 [ Symptoms ] my eyes give a yellow discharge day and night what can i do [ Disease ] cascara is actually a laxative and it is found in a lot of over the counter weight loss medications which a lot of people are not aware of i would say if you are using this medication for weight loss use it for about two weeks and then discontinue it laxative can be dangerous you can actually develop a tolerance to them and actually the other thing is too you may become dependent on products like this to help you have a bowel movement so as a pharmacist i would not recommend using a product that contains cascara