I took a class in college called the Science of Nutrition. Also one of the professors who was a good friend of mine taught sports psychology and the body, plus other similar classes. I have been told this by many medical people. I didn't mean to freak you out but this is what I learned. It didn't stop me from continuing. I went and got the spirulina at the health food store for $11.00 - it comes in capsules. It is sea weed that is loaded with protein. Also, I have taken the cleanse without the spirulina. I just wanted to give a heads up on the down low. Good luck, Marcie