Caffeine the Basics – a counselorssoapbox video. Posted on March 12, 2019 by David Joel Miller Caffeine, its sources, metabolism, excretion, and the way it interacts with other drugs. Why some people should not consume caffeine. Share this:TwitterFacebookLinkedInRedditEmailSkypePinterestTumblrPrintPocketTelegramWhatsAppLike this:Like Loading... Related