Caffeine, conteened in coffee an ither beverages, is the maist widely uised psychoactive drog in the warld. 90% o North American adults consume the substance on a daily basis.[1]

A drog is ony substance (ither nor fuid that provides nutreetional support) that, when inhaled, injectit, smeukit, consumed, absorbed via a patch on the skin, or dissolved unner the tongue causes a pheesiological chynge in the bouk.[2][3]


  1. Richard Lovett (24 September 2005). "Coffee: The demon drink?". Retrieved 2014-05-01.
  2. "Drug". Unabridged. v 1.1. Random House. 20 September 2007 – via
  3. "Drug Definition". Stedman's Medical Dictionary. Retrieved 2014-05-01 – via