I was informed that my sister may be taking a roxicontin??? I know nothing about this drug and I don't know how reliable my source is. He said that some of the side effects of the drug is weight gain and muscle spasms. My sis has been to the ER several times over the last few months from these muscles spasms and she's put on about 30 lbs which is crazy bc she's always been really small. I don't know what to think about it. She's has a drug problem before but as far as we knew she's been clean for a bit. Now with this news I really don't know. Please help!