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Current Evidence for the Benefits of Melatonin
Summarized from the
Mayo Clinic.
Alzheimer's Disease (sleep disorders)
Extent of Studies:
Limited
Level of Evidence: Unclear
Results:
Unclear if beneficial
Antioxidant (free radical scavenging)
Extent of Studies:
Over 100 laboratory and animal
Level of Evidence: Unclear
Results:
Suggest the prevention or treatment of conditions associated with oxidative damage
Attention Deficit Hyperactivity Disorder (ADHD)
Extent of Studies:
Limited
Level of Evidence: Unclear
Results:
Unclear
Benzodiazepine Tapering
Extent of Studies:
Small
Level of Evidence: Unclear
Results:
Promising
Bipolar Disorder (sleep disturbances)
Extent of Studies:
Limited
Level of Evidence: Unclear
Results:
Unclear
Cancer Treatment
Extent of Studies:
Several
Level of Evidence: Unclear
Results:
Mixed, promising
Chemotherapy Side Effects
Extent of Studies:
Several
Level of Evidence: Unclear
Results:
Promising early results include reductions in nerve injury, mouth sores, wasting, and platelet count drops, heart and lung damage.
Circadian Rhythm Entraining (in blind persons)
Extent of Studies:
Multiple
Level of Evidence: Unclear
Results:
Suggest that melatonin, administered in the evening, may correct circadian rhythm.
Delayed Sleep Phase Syndrome (DSPS)
Extent of Studies:
Several, Small
Level of Evidence: Good
Results:
Promising.
Depression (sleep disturbances)
Extent of Studies:
Limited
Level of Evidence: Unclear
Results:
Limited
Glaucoma
Extent of Studies:
Limited
Level of Evidence: Unclear
Results:
Preliminary evidence that melatonin may actually decrease intraocular pressure in the eye
Headache Prevention
Extent of Studies:
Several, small
Level of Evidence: Unclear
Results:
Suggest possible benefits in all three types of headache
High Blood Pressure (hypertension)
Extent of Studies:
Several, mostly small
Level of Evidence: Unclear
Results:
Small reductions in diastolic and systolic blood pressure
HIV / AIDS
Extent of Studies:
Lacking
Level of Evidence: Unclear
Results:
Melatonin should not be used in place of more proven therapies, and patients with HIV/AIDS are advised to be treated under the supervision of a medical doctor.'
Insomnia (of unknown origin in the non-elderly)
Extent of Studies:
Several, small
Level of Evidence: Unclear
Results:
Inconsistent.
Insomnia in the Elderly
Extent of Studies:
Several
Level of Evidence: Good
Results:
Suggest short-term benefits.
Jet Lag
Extent of Studies:
Several
Level of Evidence: Strong
Results:
Strong evidence. Suggest benefits of melatonin in up to half of people taking melatonin.
Parkinson's Disease
Extent of Studies:
Very limited
Level of Evidence: Unclear
Results:
Unclear
Periodic Limb Movement Disorder
Extent of Studies:
Very limited
Level of Evidence: Unclear
Results:
Unclear
Preoperative Sedation / Anxiolysis
Extent of Studies:
Small number
Level of Evidence: Unclear
Results:
Promising
REM Sleep Behavior Disorder
Extent of Studies:
Limited case reports
Level of Evidence: Unclear
Results:
Some benefits
Rett Syndrome (female children)
Extent of Studies:
Limited
Level of Evidence: Unclear
Results:
Unclear
Schizophrenia (sleep disorders)
Extent of Studies:
Limited
Level of Evidence: Unclear
Results:
Unclear
Seasonal Affective Disorder (SAD)
Extent of Studies:
Several, small
Level of Evidence: Unclear
Results:
Not well reported
Seizure Disorder (children)
Extent of Studies:
Several case studies, limited animal research
Level of Evidence: Unclear
Results:
Controversial, suggests possible anti-seizure effects. However, melatonin may actually lower seizure threshold and increase the risk of seizures.
Sleep Disturbances Due to Pineal Region Brain Damage
Extent of Studies:
Several
Level of Evidence: Unclear
Results:
Improvements in sleep patterns in young people. Consideration of melatonin in such patients should be under the direction of a qualified healthcare provider.
Sleep Disturbances in Children with Neuro-Psychiatric Disorders
Extent of Studies:
Multiple
Level of Evidence: Good
Results:
Reduced time to fall asleep, increased sleep duration.
Sleep Enhancement in Healthy People
Extent of Studies:
Multiple
Level of Evidence: Good
Results:
Suggest decrease the time it takes to fall asleep, increases the feeling of 'sleepiness,' and may increase the duration of sleep.
Sleep in Asthma
Extent of Studies:
Preliminary
Level of Evidence: Unclear
Results:
Possible improvements
Smoking Cessation
Extent of Studies:
Small
Level of Evidence: Unclear
Results:
Promising in reducing symptoms associated with smoking cessation, such as anxiousness, restlessness, irritability, and cigarette craving.
Stroke
Extent of Studies:
(none listed)
Level of Evidence: Unclear
Results:
Unclear. Possible reduction of neurological damage and melatonin levels.
Tardive Dyskinesia
Extent of Studies:
Limited, small
Level of Evidence: Unclear
Results:
Mixed
Thrombocytopenia (low platelets)
Extent of Studies:
Some cases studies
Level of Evidence: Unclear
Results:
Unclear
Ultraviolet Light Skin Damage Protection
Extent of Studies:
Several, small
Level of Evidence: Unclear
Results:
Reductions in erythema (skin redness)
Work Shift Sleep Disorder
Extent of Studies:
Several
Level of Evidence: Unclear
Results:
Mixed
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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.
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WorldWide Labs Customer Comments
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"The Melatonin SR was for my mother, who, with her 80 years, always wakes up between 3 and 5 in the morning even with the common Melatonin. But your Melatonin SR helps her very much. Thanks again for all." - MB, Switzerland
"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
"After much searching in stores in our area, we came across WorldWide Labs and have, at last, found what we have been looking for. Your Regular 1.5's are just right for us..went to sleep like a baby .. no hangover in the morning! Many thanks and we hope you stay in business forever." - K&R B., USA
"I am a shift worker frequent night/day swaps) and have been using your Melatonin for about 3 years to help switch from days to nights. It is great!!" - J.S. MD (ER Physician), Canada
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