melatonin melatonin  /ˌmɛ lə ˈtoʊ nɪn/


  • (n) hormone secreted by the pineal gland


  1. Drug companies are rushing to manufacture analogs to melatonin the all-natural jet-lag-busting supplement.
  2. As nighttime approaches and daylight recedes, the pineal gland produces melatonin, a chemical that signals the body to begin shutting down for sleep.
  3. Melatonin research is truly at a promising juncture.


  1. Daycare workers drugged kids with spiked pancakes

    A home daycare operator is accused of crushing medications and supplements, including melatonin and an antihistamine, used for the purpose of causing drowsiness.
    on June 18, 2013     Source: WRCB Chattanooga

  2. Vanda says Phase III study data shows cortisol rhythm restoration

    Vanda Pharmaceuticals presented additional data at ENDO 2013 demonstrating that tasimelteon can entrain both melatonin and cortisol rhythms. This effect further confirms tasimelteon's potential to reset ...
    on June 18, 2013     Source: via Yahoo! Finance

  3. Roach: Side effects of melatonin?

    Dear Dr. Roach: My wife and I take melatonin most nights to deal with sleep disorders. Are there any side effects from taking this on a regular basis? — B.D.F.
    on June 15, 2013     Source: The Alexandria Town Talk

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definition of melatonin
meaning of melatonin


  1. "Melatonin is the body's internal clock, as well as its internal calendar," says Steingraber. "It's an inhibitory signal for puberty so the more melatonin you have, the later you go into puberty."
    on Apr 8, 2008 By: Sandra Steingraber Source: E/The Environmental Magazine

  2. "I had a José Saramago book I was looking forward to reading," Leisner said. "And then I was going to take some melatonin and have a little nap."
    on Sep 18, 2006 By: David Leisner Source: New Yorker

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