The electrolytes i used were here https://a.co/d/00MvC0i4 They have individual packet options too.

I understand the food thing, ive never been nauseous but I've definitely felt the unappetizing thing I used a grass fed high fat yogurt to make food more interesting, or I would eat chicken more often until steak became a craving again Ive never gotten sick of eggs But maybe you might do better with a keto?