<p>1.4 hours.<sup class="text-reference-group"><a class="reference-popover-link" data-content="Official drug label" href="#label-reference">Label</a>,<a class="reference-popover-link" data-content="Carone L, Oxberry SG, Twycross R, Charlesworth S, Mihalyo M, Wilcock A: Spironolactone. J Pain Symptom Manage. 2017 Feb;53(2):288-292. doi: 10.1016/j.jpainsymman.2016.12.320. Epub 2016 Dec 23. (PubMed ID 28024992)" href="#reference-A178192">7</a></sup></p><p>Canrenone has a half life of 16.5 hours, 7-α-thiomethylspirolactone has a half life of 13.8 hours, and 6-ß-hydroxy-7-α-thiomethylspirolactone has a half life of 15 hours.<sup class="text-reference-group"><a class="reference-popover-link" data-content="Official drug label" href="#label-reference">Label</a>,<a class="reference-popover-link" data-content="Carone L, Oxberry SG, Twycross R, Charlesworth S, Mihalyo M, Wilcock A: Spironolactone. J Pain Symptom Manage. 2017 Feb;53(2):288-292. doi: 10.1016/j.jpainsymman.2016.12.320. Epub 2016 Dec 23. (PubMed ID 28024992)" href="#reference-A178192">7</a></sup></p>