This has happened to me plenty of times, usually when the product is more potent than I'm used to or the drip is extremely disgusting.
To prevent nausea, I suggest taking a Zofran or even a Promethazine pill; the latter works the best for me. Try drinking liquids that contain ginger as it naturally relieves nausea as well. Also, lying down flat on your back for a little bit until it kicks in can help override the nauseous feeling.
Sometimes it depends on your stomach content as well. You're more prone to throwing up from anything on a completely empty stomach. Light meal. Toast even.