I took Parastroy and also did The Master Cleanse and Psyllium and BentoniteColon Cleanse at the same time. I had headaches, joint pain, nausea and exhaustion from the beginning. Some of it was detox from the cleanse, some of it was probably from the die-off of parasites. I knew I had them because I passed an 18" long Tapeworm the week before beginning the Parastroy and several Tapeworm segments during the cleanse. I had to stop The Master Cleanse on the 9th day because I became so weak I was having black out spells. Be very careful when doing multiple cleanses. They can be very tough on the body for some people.