What is the best thing to do if magic mushrooms/truffles make you nauseous?

You may feel nauseous from psychedelics. So try not to eat for 2 hours beforehand. If you do get nauseous, drinking ginger tea could help. Furthermore, it is better to accept the nauseous feeling, and look for a little distraction every now and then. If you are nauseous, try not to move too much. The feeling often goes away after a while.