Kahvissa on pieniä määriä noin 30:a kivennäisainetta.<ref name="kingston-36">Kingston 2015, s. 36–41.</ref>
Kahvijuomista on löydetty myös [[MAO-estäjät|mao-estäjinä]] toimivia harmania and [[Beta-Karboliini|beta-karboliinia]].<ref>[http://www.ncbi.nlm.nih.gov/pubmed/16139309 Human monoamine oxidase enzyme inhibition by coffee and beta-carbolines norharman and harman isolated from coffee.] Life Sci. 2006 Jan 18;78(8):795-802. Epub 2005 Aug 31.</ref> sekä [[Opioidiantagonistit|opioidiantagonistina]] toimivaa 4-CQL:ää.<ref>[http://vanderbilt.edu/ics/Files/QUINIDE_opioids.pdf 4-Caffeoyl-1,5-quinide in roasted coffee inhibits [3H]naloxone binding and reverses anti-nociceptive effects of morphine in mice] Psychopharmacology (2004) 176: 146–153.</ref><ref>[http://online.liebertpub.com/doi/10.1089/jcr.2014.0024 Journal of Caffeine Research] Journal of Caffeine Research, Volume: 5 Issue 1: March 6, 2015.</ref>
