A visit to her bariatric Dr in needed asap and he or she can order labs like a CMP. Her sodium, potassium and a baseline magnesium should be done. Usually bariatric Drs have nutritionist that work for them they can assess her diet and fluid intake annd see her labs and see how best to treat her with fluids, diet and supplements. Your wife’s problem stems from fluid and electrolyte imbalance. Supplements can cause more problems if not paired well with other supplements, especially in your wife’s case. Drs rarely divulge to there patients who have these surgeries all the long term detrimental consequences of these types of surgeries. They may but not to the extent that they should.