If you're experiencing NIC sickness, the fastest way to stop it is to immediately stop consuming nicotine. Put down the vape pen or cigarette and give your body a chance to recover. Find a comfortable place to sit or lie down, stay calm, and try to relax. Hydrate yourself by drinking water or a sports drink to flush out the nicotine from your system. Distract yourself with a calming activity or distraction, like listening to soothing music or watching a light-hearted movie. These steps should help you feel better faster.