<p>Levodopa binding to plasma proteins is negligible<sup class="text-reference-group"><a class="reference-popover-link" data-content="Fanali G, Rampoldi V, di Masi A, Bolli A, Lopiano L, Ascenzi P, Fasano M: Binding of anti-Parkinson's disease drugs to human serum albumin is allosterically modulated. IUBMB Life. 2010 May;62(5):371-6. doi: 10.1002/iub.317. (PubMed ID 20225277)" href="#reference-A177817">6</a></sup>.</p>