I have experienced some nausea after the infustions. With my last infusion, I didn't struggle with it afterwards. My difference was having benadryl before and an IV of fluids after the infusion. I'm sure you know about the drinking water thing. I have used Bonine for nausea, and like Erin mentioned, ginger capsules. The Bonine is stronger. If medical cannabis is legal where you live, some of the edibles can help. I've used high doses of Benadryl for nausea. I take Klonopin for sleeping issues, however I noticed that if I used a very very small dose, it would kick nausea. These are my thoughts. I hope it helps.
I've really struggled recovering from the infusions, until they started pre-treating me and giving me fluids, this made a world of difference.