Caffeine is an ingredient in many sodas, coffee, and food products. It makes you more alert by stimulating your central nervous system. It may take more than 10 hours to completely clear caffeine from your bloodstream. To learn more about how long the effects of caffeine last and how it affects your health, head over to our website. #webmd #coffee #coffeetok #coffeetiktok #coffeetalk #caffeine #caffeineislife #caffeinecrash #caffeinesolution