Cautions

"Based on available studies and clinical use, melatonin is generally regarded as safe in recommended doses for short-term use.

"Available trials report that overall adverse effects are not significantly more common with melatonin than placebo."         - U.S. National Institutes of Health

Cautions Compared

Mouse-over each item for more details.
  Absolute Contraindication (Completely Prohibited)   NIH MNT MSC WMD
Lactation
  Contraindicated (Inadvisable to Use)   NIH MNT MSC WMD
Alcohol, Other Drugs  
Autoimmune 
Children 
Liver or Kidney Disease, Stroke, Epilepsy   
Pregnancy
Schizophrenia, Systemic Lupus Erythematosus   
  Possible Side Effects   NIH MNT MSC WMD
Abnormal Heart Rhythms  
Blood Flow 
Blood Pressure   
Blood Sugar, Cholesterol, Heart Rhythms   
Confusion, Difficulty Concentrating, Alertness
Eyes   
Fatigue, Dizziness, Sleepiness, Irritability  
Headache 
Hormonal Effects   
Hypothermia   
Itching, Heaviness in the Head   
Mood Changes, Depression
Morning Grogginess  
Reduced sperm count  
Seizure  
Sleepwalking   
Stomach Problems  
Vivid Dreams  
  Overdose   NIH MNT MSC WMD
Balance   
Disorientation   
Psychotic Symptoms   

Summarized from:   U.S. National Institutes of Health (NIH),  
MedicineNet (MNT),   Medscape (MSC),   WebMD® (WMD)

WorldWide Labs
Customer Comments

"I have been using Melatonin since 1990 as a sleep aid. I have a sleep disorder and am unable to use sleeping pills (and don't want to). Melatonin makes the difference between sleep and not sleeping. This has necessitated many trips to the United States.... sometimes for the sole purpose of purchasing Melatonin." - M.M., Canada

"Thank you WWL for your prompt service. I live in Australia and I received my order within 6 days. Your melatonin is the best I have used and I have used several different brands before, no hang-over next day and I'm sleeping much better." - B from Sidney, Australia

"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

"The veterinarian has prescribed Melatonin for my dog, a Keeshond. She is horrified of thunder and other loud noises. The doctor said that Melatonin will keep her calm." - K.F.B., USA

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