Just because they are natural doesnt mean they cant be harmful. We use a lot of herbals and other alternative meds, but do alot of research first. Some things like Uva Ursi and Goldenseal should only be given for 5-10 days at a time and only a few times a year, otherwise it can stress the kidneys or liver. Some supplements like Lipoic Acid, chelate heavy metals and cross the blood-brain barrier, so you dont want to take that if you have silver fillings.