INSTAFLEX EXTRA STRENGTH PAIN RELIEF CREAM DELIVERS TWICE the menthol power of original Instaflex Pain Relief Cream, plus 2X the pain fighting ingredients. This formula also contains a proprietary blend of the same essential oxygenated oil included in original Instaflex, but with even more menthol and methyl salicylate. THE EXCLUSIVE OXYGENATED OIL IN INSTAFLEX, along with an ideal amount of soothing menthol, goes to work right at the source of your pain, working quickly to relieve pains, strains and joint and muscle pain. And it’s great for nighttime pain!