<p><span class="h-card" translate="no"><a href="https://hachyderm.io/@fasterthanlime" class="u-url mention">@<span>fasterthanlime</span></a></span> on second thought "literally no other drug" is wrong in the strictest sense since coffee and tea contain other monoxanthines like theobromine and theophylline, but since they all share a metabolic route (caffeine itself is metabolized to paraxanthine, theophylline, and theobromine, for example) it feels reasonable to group them together</p><p>this paper contains more information on caffeine metabolism, though it's somewhat dense <a href="https://www.sciencedirect.com/org/science/article/pii/S1479680524000214" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://www.</span><span class="ellipsis">sciencedirect.com/org/science/</span><span class="invisible">article/pii/S1479680524000214</span></a></p>
