I would suggest MAKING SURE your son gets enough fiber but make sure you give your son lots and lots of water to push the fiber along. This will clear out the candida and parasites in your sons system. Flaxseed is the best recommendation. Also I cannot stress how important diet is. NO sugar. Not too many carbs and lots of fruits and vegetables. This will cleanse his system. No red meat...only white meat like chicken and turkey. THe diet the fiber and water are the most important to get his systme on the right track. Good luck and I am wishing your son much success.