Melatonin industry asked to voluntarily tighten standards after dramatic rise in childhood ER visits

<p>ATLANTA — Makers of melatonin supplements have 18 to 24 months to voluntarily add child-deterrent packaging and improve cautionary language on labels of over-the-counter products, according to the <a href

html" rel="nofollow" target="_blank">hormone</a> produced by the brain in response to darkness, has skyrocketed over the last decade, according to experts.

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