<p>After 48 hours, 0.17% of an orally administered dose is recovered in stool, 0.28% is exhaled, and 78.4% is recovered in urine<sup class="text-reference-group"><a class="reference-popover-link" data-content="Abrams WB, Coutinho CB, Leon AS, Spiegel HE: Absorption and metabolism of levodopa. JAMA. 1971 Dec 27;218(13):1912-4. (PubMed ID 5171067)" href="#reference-A177805">5</a></sup></p>