I get killer migraines and from earlier neuropathy have lots of pain in joints and muscles. Have been taking Mobic daily max 15mg but doesn't seem to help anymore. Only if I take the max Advil dosage of 4 pills at a time will I sense some relief. Sometimes I have to take this dosage 2 and 3 times a day. Would like to understand why other brands do not have same impact, such as Aleve, Tylenol, Bufferin, Bayer etc. I know my body won't sustain these dosages over longer period but physicians don't seem to have logical explanation. Thanks in advance for replies...