Hello dear, Before starting any health supplement, it is always better to consult your Physician. Though most of the supplements are claimed to be free from side effects, they may be harmful if taken for a prolonged time, such as: 1. They contain small amounts of steroids, and can lead to a number of bone-related problems. 2. High amount of protein can affect kidney & liver function. 3. High sugar levels can result in diabetes with long term use. 4. Hormonal imbalances, reduced sexual desire, depression, etc. These are few of the adverse effects of using health supplements. And as you are already on medication (seroquel) it will be better discuss regarding this with your treating Physician. Take care.