It also has estrogenic effects but I think that would help with weight gain and not loss. ?? I wonder though if somehow it is affecting some other hormone in you. For ME/CFS I've noticed too that we often get paradoxical side effects, i.e. something makes most people sleepy but makes us wired.
What type of stomach woes are you experiencing?
I have a chart on one of our mirrors for our different stomach woes.
-Acid stomach - Licorice (DGL) or Aloe
-Nausea - Ginger (but can make acid worse)
-Rot Gut (food feels like it just sits there like a rock) - Digestive Enzymes or artichoke w/or w/o milk thistle
-IBS Stomach cramps - Mycopryl (+ Pepogest if really bad--but the latter can make acid worse)
-Gas and Bloating - Activated Charcoal or a digestive enzyme
-Loose stools - Activated Charcoal or Digestive enzyme
-Constipation - Mycopryl, green tea, and/or Magnesium oxide (Artichoke and milk thistle taken together also seem to help with this)
Glutamate can also be soothing but can cause excitotoxin effects.
Marshmallow is also soothing.
The one we tend to go to the most though is the Mycopryl. When I was first diagnosed with IBS I had two weeks of solid pain and tried everything on that list along with probiotics, the normal otc things and two RX that the gastroenterologist gave me. Nothing touched the pain until I remembered I had not tried the Mycopryl. Within 5 minutes the pain started to go away. When that doesn't work alone I add the Pepogest. Do not lay down right away after taking these two because they can back up the esophagus and for the Pepogest that is especially uncomfortable. Also drink a few extra swallows of water with the Mycopryl because the capsule seems to stick in the esophagus a bit going down.
Hope you figure it out. Losing weight when you don't need to can be tough. My mom is bones and we are trying to get her to gain weight. Very hard to do.
Edit: Also are you on any medications? You could see if other people are experiencing stomach issues with them by going to
askapatient.com and looking up reviews of your particular meds.