Juicing - insane nausea

Hi guys, i've been sick with parasites (treated), c difficile (treated with vancomycin), and now dysbiosis (no bifido, no e.coli, high C. fruendii and E. cloacae pathogens). I'm also using Nystatin to keep candida from flourishing.

I have been using juice as a supplement, juicing fresh organic kale and some ginger, collard greens. Sometimes after i drink this mixture i have diarrhea but that might not be the juice because in the past few weeks i've had diarrhea with a lot of meals because of my messed up bacteria levels.

I am treating the stomach condition, this question is really about nausea.

The past 2 days i've juiced something different, Swiss Chard, Cucumber, Ginger.
OMG.. after i drink 1-2 glasses of this i get seriously nauseas, brain foggy, mood change, a sort of high feeling.

If this is detox..why did i not feel this way when drinking huge amounts of kale?