FM Nutrition Opti-Histamine Powder is an advanced nutritional formulation designed to support histamine balance, allergy response, detoxification and recovery from die-off reactions. It combines quercetin, vitamin C, curcumin, stinging nettle, milk thistle, glycine, L-taurine, magnesium and key minerals in a convenient powder format. The formulation provides multi-pathway nutritional support for individuals experiencing histamine sensitivity, recurrent allergy-like symptoms, immune hypersensitivity or increased detoxification demands.