I'm not sure what the long term effects of chronic melatonin supplementation are, but I'll find out eventually. I've been taking between 3-6mg of melatonin every night for the past few years (2011?) It's almost required. Without it my sleep cycle seems fine at first, but then gets out of whack as I can't seem to keep a circadian rhythm in line with the rest of society / the earth's rotation. On the opposite end of th…
>>"According to our research, the physiological dose of melatonin of about 0.3 milligrams restores sleep in adults over the age of 50," said Wurtman, lead investigator in the study. "The adults who would normally wake up during the second and third thirds of the night were able to sleep through the night with the 0.3 milligram dosage." The researchers also discovered that the typical health food store dosage of melatonin, which is about three milligrams (or 10 times the dosage in the study), is less effective in treating insomnia. [1]
Personally, I take about .1 mg every night sublingually.