What other elements are within that capsule, and what is the shell made of? I always read labels of whatever supplement I want to include in my health regimen, do the same with my husband's. But yes, ALA can cause stomach issues for some people (although regular ALA was fine for both of us). There are other caveats. I recently went from regular ALA to R ALA, and after experiencing horrible insomnia, realized that the new form of ALA could well be the culprit. Researched it and yes, some individuals can experience what I had for several nights in a row. I was miserable, but that had been the only NEW thing in my daily supplement intake, so I discontinued taking it immediately. My sleep pattern has improved, and I'm happy when I can get at least 4 to 5 hours straight of restorative sleep. (I've had sleep issues for years, due to various factors including fibromyalgia and advance MS). It's been over 8 days since I discontinued the R form of ALA (which I had read that R ALA is a more effective form of ALA, but what value is it to me if it destroys my sleep??!!).

Please google ALA and read about what potential side effects it can have. Then decide if it's worth it to you or not. Perhaps would help to take the supplement after a meal, to "buffer" the effect of nausea.
Best of luck.

Did you take it by itself or with a meal? I take a new to me supplement with a meal and if possible at a lower dose for the first week or so to give my stomach a chance to adjust.