You can purchase Oxy-Powder® from Amazon, Ebay and many other online health stores, but the best place to purchase Oxy-Powder® is directly from Global Healing Center who manufactures the product. Their customer service line is very knowledgeable about the product, and they are there to answer any questions related to Oxy-Powder®. Global Healing Center also offers a 100% money back guarantee. If for some reason you are not satisfied with the product, simply send it back and you will receive a refund no questions asked.