After testing the impact of these drugs on mouse neurons, they identified one candidate—fluphenazine, previously prescribed for schizophrenia—that successfully inhibited not only tetrahydrobiopterin but pain too.

在测试了这对小鼠神经元的影响后，他们确定了一种候选——氟奋乃静，以前曾为精神分裂症开过处方——它功地抑制了四氢生蝶呤，而且还功地抑制了疼痛。