Hi - Sorry I'm no help on the meds but what hits me right away is the meds/nausea connection - if you are taking meds that are slowing down your muscles - they very well could be contributing to your gi issues right now... even meds thats are given for things like irritable bowl to stop cramps, etc. can make you feel ill - and I know thats not what you are taking - but anything that known to cause constipation or stop shaking etc can really affect the fuction of your intestines...