Morphine Binder Question

[maximumquake]

Swim gets greem ms contin, 15 mg pills. Swim tried snorting a few of them, but all they did was gel up and give swim a horrible drip, lasting for days. Swim has a decent tolerance to opiates, having to snort 60-80mg of oxy to feel anything. Swim chewed 8 of them and swallowed, and also snorted two. No opiate felling followed, swim's stomach hurt like hell, swim's stomach felt like he was going to have a bad case of the runs. Swim's stomach hurt so much he could not move just lay in bed, followed by the next day waking up to puke his guts out. Swim is an experienced opiate user and has not puked in over a year. One of swim's friend reports the same effects but not as bad only there stomach hurt. But another one of swim's friends who has little tolerance snorted one and was nodding. Swim's question is, is one of the binders in the 15's causing ones stomach to hurt like hell. Swim's brother had the same problem as swim, but he got a 300 mscontin took half and was fine, just pleasently high. Is there anyway to prevent this, or is it just morphine's effect on a particular swim, due to one's anatomy? Has anyway had a similar experience or have any idea why this is caused?