I have prostate cancer treated with trelstar (triptorelin) why when i take 3mg of melatonin do i sweat profusly?

A Trelstar (triptorelin) effect: Trelstar (triptorelin) reduces your testosterone levels to castrate levels in order to shut the cancer down. The hot flashes you are feeling are similar to what women experience in menopause. Although there is no specific treatment, they should improve with time. I don't believe the melatonin is contributing and you should be able to continue.

Uncertain: Hot flashes are a common side effect of drugs like trelstar (triptorelin). It is unclear if there is a relationship with melatonin. Perhaps if you are having hot flashes at certain times of day they may coincide with when you typically take melatonin.