Does Optimal Detox contain gluten or grains? Ceylon Keeslar October 13, 2021 18:00 Updated Follow Optimal Detox Powder is gluten-free. This product contains grains: rice protein concentrate from rice. Related articles Is Optimal Detox free from GMOs? What are the ingredients in Optimal Detox sourced from? What are the possible interactions or side effects of using Optimal Detox? How do I use Optimal Detox? Comments 0 comments Article is closed for comments.