constipation, drug induced
"my advice on movantik is understand that movantik is an opioid blocker in the same manner that naloxone (found in suboxone) is an opioid blocker. My husband took 12.5mg and was thrown in withdrawal. Nausea first, chills, fever, shaking so hard the bed was vibrating. I thought movantik worked on the backed up s**t but it stops the opioid from working. Of course you will have diarrhea when your pain meds are cut off. It may not happen to everyone but it happened to my husband. I guess it's back to OIC"