Nothing in mass massmax is cox-2 inhibiting, as far as im aware of. It has anti-inflammatory properties sure. However, that does not mean it will negatively impact ArA. As it is anti-inflammatory through different pathways, which should not decreases ArAs ability to increase prostaglandins. People often confuse ArAs moa of how it increases muscle. Its not purely because pro-inflammatory properties. Rather the inflammation is a side effect of it increasing prostaglandins which are very anabolic. You dont want to take anything that inhibits prostaglandins moa, such as cox-2 inhibitors, as that will decrease ArAs effectiveness.