Melatonin is used as a sleep aid, as it helps to maintain or reset the circadian rhythm of the brain and body.
Melatonin is not the major regulator of normal sleep patterns, but undoubtedly has a major effect. One topic that has generated a large amount of interest using melatonin alone, or in combination with phototherapy, is to treat sleep disorders. There is some indication that melatonin levels are lower in elderly insomniacs relative to age-matched noninsomniacs, and melatonin therapy in such cases appears modestly beneficial in correcting the problem. Another sleep disorder is seen in shift workers, who often find it difficult to adjust working at night and sleeping during the day; the utility of melatonin therapy to alleviate this problem is equivocal and appears not to be as effective as phototherapy. In various species including humans, administration of melatonin has been shown to decrease motor activity, induce fatigue, and lower body temperature, particularly at high doses. The effect on body temperature may play a significant role in melatonin’s ability to entrain sleep-wake cycles, as in patients with jet lag.
The pineal gland, or epiphysis, synthesizes and secretes melatonin, a structurally simple hormone that communicates information about environmental lighting to various parts of the body. Ultimately, melatonin has the ability to entrain biological rhythms and has important effects on the reproductive function of many animals. The pineal gland is a small organ shaped like a pinecone (hence its name). It is located on the midline and attached to the posterior end of the roof of the third ventricle in the brain.
Adults: Take 1–3 tablets daily, only at or before bedtime, or as directed by your health-care practitioner.
Duration of use: Consult a health-care practitioner for use beyond 4 weeks.
|Each tablet contains:|
|Other ingredients: Dicalcium phosphate, microcrystalline cellulose, croscarmellose sodium, silicon dioxide, vegetable magnesium stearate, and vegetable stearic acid.|
Contains no: Gluten, soy, wheat, corn, eggs, dairy, yeast, citrus, preservatives, artificial flavour or colour, starch, or sugar.
Cautions and warnings: Consult a health-care practitioner prior to use if you have a hormonal disorder, diabetes, liver or kidney disease, cerebral palsy, seizure disorders, migraines, depression, and/or hypertension; or if you are taking blood-pressure or sedative/hypnotic medications. Consult a health-care practitioner if symptoms persist continuously for more than 4 weeks (chronic insomnia).
Contraindications: Do not use if you are taking immunosuppressive drugs. Do not drive or use machinery for 5 hours after taking melatonin. Do not use if you are pregnant or breast-feeding.
Keep out of reach of children. Store in a dark and dry place.
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