I’ve never experienced much nausea from snorting coke , but IVing is quite a different story... been looking for something to reduce or eliminate my stomach flipping everytime I do a shot . Only thing that really works is if the H is strong enough to reduce the Nausea but unfortunately even good H ( and I mean gooooood ) doesn’t help usually . There has been a couple batches that have been strong enough, but normally tha coke rush blows right thru the H rush and flips my stomach . My speedball ratio is already H heavy ( usually 1/4 as much coke as H ) so I can’t use less coke and still feel it . Is nausea just a inconvenient reality I must learn to accept? A few ways I handle tha nausea is a cold pacc on my forehead or the bacc of my necc. Gargling mouthwash or a little toothpaste mixed with water works well too , for me it usually takes it away immediately . Just a few tips to try if ur nausea continues and becomes a consistent inconvenience . Hope it helps .