Renew Life First Cleanse is a 15 day Detox program to eliminate toxins. I Just finished this cleanse and had not changed my diet. I had no side effects. This is a first timer for me and it is for sensitive bodies. It is very effective that I feel great and have more energy. I included the FibreSMART to aid in bowel elimination. This product I received for free from Renew Life Canada in exchange for my review and the opinions are of my own. I highly recommend this product to family and friends. This will be a repeat Seasonal Cleanse for me.