"i tried using the over the counter 4% lidocaine and had some relief. i talked to a pharmacist who said that the mylan should give about 25% more relief. i tried it-purchased 30-5% pads that cost about $.30 more than the over the counter per patch. the mylan are inflexible and i have to tape them on. i will not buy more. i may talk to my doctor about just using the over the counter and adding a little more lidocaine cream. my recommendation is that customers should not waste their money on these. i also read that the mylan company is registered in the netherlands with its main office in the u.s. so, this is a company that can well afford to create an effective product since they obviously do not pay much in u.s. taxes-shame"