my best friend had gotten a couple of pills. The person had told her that they were Ritalin. she took them, and she is having the symptoms as if she did take one but i'm afraid that isn't what they are, and that she could have a reaction. they were little round white pills about the size of the end of a cigarette maybe a little bit bigger i remember there was a big M on one side they weren't coated because i remember the powder on her hand. other than that i wasnt sure of any markings or writing on it. could this be ritalin or a type of off brand?