new cautions about melatonin supplements

You'll see new cautions about melatonin supplements. In fact, OTC sales are being banned in Canada and Great Britain.

Experts warn that high doses can cause mental impairment...drowsiness...or headache the next morning.

In some people, it can even cause insomnia and nightmares...instead of a restful sleep.

Melatonin can also exacerbate depression...and may have adverse effects on the thyroid and reproductive system.

The typical 3 mg melatonin supplement produces levels that are at least TEN times higher than those produced naturally.

Lower-dose supplements...0.3 to 1 mg melatonin...might be safer.

Caution people that melatonin is a powerful hormone...not enough is known about the long-term effects.