All natural rub on pain relief. 8+ nutrients to reduce pain and promote healing. The formulation of this product is everything. Many products have to much menthol. Too much menthol gives temporary relief but can increase substance P. Substance P is a neurotransmitter that sends pain signals to the brain. Also Menthol can mask pain which could lead to further injury. Many products contain 3%-10% Menthol Our product contains 0.5% of menthol virtually eliminating the production of more Substance P. Capsicum is the only know nutrient to block Substance P. Again our company uses a form of Capsicum that does not burn the skin. RTPR MAY help to reduce Substance P even if used with pain medications. This MAY allow less pain medications needed to attain the same level of pain relief.