There is no established dosage for melatonin that is widely accepted. In addition, experts note that
most brands contain impurities that cannot be characterized, as well as dissimilar amounts of actual
When buying in America, please note that the U.S. Food and Drug Administration does not strictly regulate herbs and supplements.
There is no guarantee of strength, purity or safety of products, and effects may vary.
You should read product labels, and discuss doses with a qualified healthcare provider before starting therapy.
Below are dosages used by researchers exploring various disorders.
(Summarized from the
|Adults (18 years and older)|
|Alzheimer's disease (sleep disturbances)||0.5||nightly, 1 hr before bedtime|
|Bipolar disorder (sleep disturbances)||10||nightly by mouth|
|Cancer ||10 to 50,|
most commonly 20
|Circadian rhythm entraining (in blind persons)||5 to10||nightly|
|Critical Illness / ICU sleep disturbance||3||nightly|
|Delayed sleep phase syndrome||5||5 hrs before bedtime|
|Depression (sleep disturbances)||5||nightly|
|Headache prevention||5 to 10||nightly|
|Hypertension||1 to 3||short periods of time|
|Insomnia in the elderly||3 to 5||30 - 120 min before bedtime|
|Insomnia of unknown origin (in the non-elderly)||1 to 5||nightly|
|Jet lag||0.1 to 0.5,|
5 and 8
|Target bedtime at the destination|
|Schizophrenia (sleep disturbances)||2||(not stated)|
|Seasonal affective disorder||0.25 to 5||daily|
|Sleep enhancement in healthy people||0.1 to 6||30 - 60 minutes before bedtime|
|Children (younger than 18 years)|
There is limited study of melatonin supplements in children, and safety is not established.
Use of melatonin should be discussed with the child's physician prior to starting.
|Circadian rhythm entraining in blind children||2.5 to 10||nightly|
|Preoperative anxiety||0.1, 0.25 or 0.5 per kilogram (of child’s weight?)||(not stated)|
|Seizure disorder in children||5 to 10||nightly|
|Sleep disturbances in children with neuro-psychiatric disorders (mental retardation, autism, psychiatric disorders)||0.5 to 10||nightly|
Want more? See the
Google News Archive for melatonin and dosage.
Two bottles of melatonin in our most popular sizes, and a free sleep mask. Regularly $14.95.
THE FINE PRINT: The content presented in this website is for informational purposes only.
Before taking this or any other health supplement or therapy, consult your healthcare professional.
Even mild supplements can have varying effects on individuals, and can conflict with your existing medications and diet.
See additional information.
- WORLDWIDE LABS
"I am sure I will become prototype of improved life in Japan. Gradually my healthy body had died [way dying]. I declare my life is improved. Thank you a lot of miraculous supplement. Sorry I am not accustomed to writing English." - J.Y., Japan
"A few years ago, my mother told me that your Melatonin solved all problems she'd suffered. Because S/H to Japan is expensive, I had to buy more to keep them in stock for my mother. 50 bottles are enough to live for about 5 years. She said that she would take them until she dies. ... She trusts your brand. Please note that you have a fan even in Japan." - U.Y., Japan
"Thank you WWL firstly for the prompt delivery of my Melatonin order. I live well away from any major cities and have had much trouble trying to find any product to aid me with sleepless nights. A work collegue told me of Melatonin but I was having problems finding any locally. I am now spreading the word of just what a valuable resource you are and of just how high the quality of your product is." - Michelle from Gladstone, Australia