okay well if we're talking gastric motility problems that would cause the nausea all right, so let's just look (again) at some suspect nutrients in impaired gastric motility...
potassium deficiency affects gastric motility but the old study included here is apparently mostly about rats and dogs.. but still. it's something to look into. frequent vomiting increases the likelihood of potassium deficiency. you could ask for tests of sodium and potassium levels - balance might be right off the mark.
if your potassium is down and you can't get it to come up, look into magnesium. magnesium, along with calcium, is involved in proper muscle function and you probably won't be able to correct potassium issues without at least working on your mag status. there is a useful minimum level known for magnesium...it's 0.91 but i forget the units - you can find them in the ortho biochem regimen thread..
gastric motility issues may also be connected to thyroid disfunction.
http://jcem.endojournals.org/cgi/conten ... act/1/1/24
how are your TSH, T3 and T4 levels looking? if they are not optimal there are other nutrients to look at to address thyroid problems.
zinc and thyroid http://www.ajcn.org/cgi/content/abstract/33/8/1767
thyroid issues can in turn have an impact on your vitamin d3 status, which is important to maintain at optimal levels (at least 100nmol/L) in ms.
the following is a very old and hard to read abstract linking impaired gastric motility (again in dogs
) to b-vitamin deficiency. it would be very useful to look at your b vitamin status, for as many elements of that complex as you can.
so basically, everything i said before! plus sodium just to check the Na:K ratio.
if you can ask your doc to do some bloodwork, i'd say ask for zinc, d3, magnesium, potassium, b1, b6, and b12. all have links to one or more of ms, anxiety, nausea, digestion..
also you might want to look into your stomach acid levels..
http://arjournals.annualreviews.org/doi ... 189.001415
you can buy supplements to help augment stomach acid . i take betaine hydrochloric not with every meal and not every day, but here and there. can't tell what it's doing but just to be on the safe side..