“In contrast, concommitant injections of methysergide (6.25 mg/kg) and melatonin attenuated testicular regression and loss of body weight.”
“ Methysergide , which has a very low affinity for inhibition of 2‐[125I]‐iodomelatonin binding, probably inhibits the effects of melatonin by blocking serotonergic neurotransmission.”