I am a 43 year old female who for 3 1/2 years have been battling with back pain, headaches, muscle pain, fibromyalgia, TOS, tmj and many,many more problems due to many accidents. I throught I was finally to the point of giving up until last week my doctor told me to try MSM. What A Miracle. I started with 1000mg tablets 2 times a day and I am now taking 3, 2 times a day until I get to a level that I can live with. I have been on every medication known to man and I am now cutting all med's in half or not having to take them at all. I would love to get my book signed and after reading it I gave it to my physical therapist to read and all of my friends who also have many of the problems I suffer with. You are a god send for such a wonderful pill. One question after reading the book it keeps telling all about the crystals, is there a difference between the pills, tablets or crystals. The bottle states that it is pure Methylsulfonymethane and nothing else but I would like to no if there is a difference between the three and would like to know who I can ask regarding this. Once again thank you for saving another person who thought all hope was gone.............. Cheryl Thanks-you:)