What a great product SierraSil is !!! I have used Joint Formula 14 at least 2+ years. It was recommended to me so I gave it a try. It was fabulous right from the start. I had so much discomfort in my shoulders and neck and would put my hand on my neck to try to ease the discomfort especially when walking. It was getting so unbearable. I am now discomfort free at 76 years of age. I take not prescribed medicines. What a joy. Pass it along because it is true.