As has been mentioned in another post before, the current version of heatstroke as of October 21st 2026 doesnt seem to be curable to a lot of players, including myself, on Xbox. I would like to mention other bugs associated with this in order to better diagnose when you have a glitched version of heatstroke.
Issue 1: There are no symptoms prior to getting the "throwing up" stage of heatstroke, no blurry vision, no constant rubbing of the forehead, just a sudden throwing up animation while being in optimal conditions (white everything, including temperature, while indoors)
Issue 2: If you get the glitched version of heat stroke, it also doesnt progress to the final stage of heatstroke. In my experience, once I had this glitched version of heatstroke, I was able to run around for 40 minutes to an hour in the Nasdara mid day sun, yellow/red temperature, and didnt develop to any additional stages of heatstroke with fainting and consistent health loss.