Naxagolide (INNTooltip International Nonproprietary Name), also known as PHNO, dopazinol, L-647339, and MK-458 among other synonyms, is a dopamine receptor agonist which was developed for the treatment of Parkinson's disease but was never marketed.

[6] It is structurally similar to ergolines such as pergolide and cabergoline but is a non-ergoline itself.

[3][4] It was developed for treatment of Parkinson's disease and reached phase 2 clinical trials for this indication.

[6][8] Morning glory: Argyreia nervosa (Hawaiian Baby Woodrose), Ipomoea spp.

(Morning Glory, Tlitliltzin, Badoh Negro), Rivea corymbosa (Coaxihuitl, Ololiúqui) This drug article relating to the nervous system is a stub.