Melatonine

1.Quality Warranty. Paypal payment. 2Product Name: Melatonin 3.Molecular Formula: C13H16N2O2 4.Molecular Weight: 232.28

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Product Name: Melatonin Molecular Formula: C13H16N2O2Molecular Weight: 232.28Assay: 99.5%Apperance: White crystallineDescription: Melatonin is a hormone secreted by the pineal gland in the brain that helps regulate other hormones and maintains the body's circadian rhythm. The circadian rhythm is an internal 24-hour time-keeping system that plays a critical role in determining when we fall asleep and when we wake up. Darkness stimulates the production of melatonin while light suppresses its activity. Exposure to excessive light in the evening or too little light during the day can disrupt the bodynormal melatonin cycles. For example, jet lag, shift work, and poor vision can disrupt melatonin cycles. In addition, some experts claim that exposure to low-frequency electromagnetic fields (common in household appliances) may disrupt normal cycles and production of melatonin.Melatonin also helps control the timing and release of female reproductive hormones. It helps determine when menstruation begins, the frequency and duration of menstrual cycles, and when menstruation ends (menopause).Many researchers also believe that melatonin levels are related to the aging process. For example, young children have the highest levels of nighttime melatonin. Researchers believe these levels diminish as we age. In fact, the decline in melatonin may explain why many older adults have disrupted sleep patterns and tend to go to bed and wake up earlier than when they were younger. However, emerging research calls this theory into question.In addition to its hormonal actions, melatonin has strong antioxidant effects. Preliminary evidence suggests that it may help strengthen the immune system.Studies suggest that melatonin supplements may help induce sleep in people with disrupted circadian rhythms (such as those suffering from jet lag or poor vision or those who work the night shift) and those with low melatonin levels (such as some elderly and individuals with schizophrenia). A review of clinical studies suggests that melatonin supplements may help prevent jet lag, particularly in people who cross five or more time zones.A few clinical studies suggest that when taken for short periods of time (days to weeks) melatonin is significantly more effective than a placebo, in decreasing the amount of time required to fall asleep, increasing the number of sleeping hours, and boosting daytime alertness.Multiple human studies have measured the effects of melatonin supplements on sleep in healthy individuals. A wide range of doses has been used, often taken by mouth 30 - 60 minutes prior to sleep time. A study of 334 people aged 55 and older found that prolonged-release melatonin produced significant and clinically meaningful improvements in sleep quality, morning alertness, sleep onset latency, and quality of life in primary insomnia patients aged 55 years and over.Melatonin has been shown to stimulate cells called osteoblasts that promote bone growth. Since melatonin levels may be lower in some older individuals such as postmenopausal women, current studies are investigating whether decreased melatonin levels contribute to the development of osteoporosis, and whether treatment with melatonin can help prevent this condition.Melatonin supplements may benefit menopausal women by promoting and sustaining sleep. Peri- or postmenopausal women who use melatonin supplements to regulate sleep patterns should do so only for a short period of time since long term effects are not known.Some clinical research has found that melatonin may assist with tapering or cessation of benzodiazepines such as diazepam (Valium), alprazolam (Xanax), or lorazepam (Ativan). Sleep quality was improved in those stopping benzodiazepine use. Although preliminary results are promising, further study is needed.Several controlled studies in patients with high blood pressure report small reductions blood pressure when taking melatonin by mouth (orally) or inhaled through the nose (intranasally). Better-designed research is necessary before a firm conclusion can be reached.Several studies indicate that melatonin levels may be linked with breast cancer risk. For example, women with breast cancer tend to have lower levels of melatonin than those without the disease. In addition, laboratory experiments have found that low levels of melatonin stimulate the growth of certain types of breast cancer cells, while adding melatonin to these cells inhibits their growth. Preliminary laboratory and clinical evidence also suggests that melatonin may enhance the effects of some chemotherapy drugs used to treat breast cancer. In a study that included a small number of women with breast cancer, melatonin (administered 7 days before beginning chemotherapy) prevented the lowering of platelets in the blood. This is a common complication of chemotherapy, known as thrombocytopenia that can lead to bleeding.In another study of a small group of women whose breast cancer was not improving with tamoxifen (a commonly used chemotherapy medication), adding melatonin caused tumors to modestly shrink in over 28% of the women. People with breast cancer who are considering taking melatonin supplements should consult their doctors before beginning supplementation.Like breast cancer, studies show that people with prostate cancer have lower melatonin levels than men without the disease. Melatonin blocks the growth of prostate cancer cells in test tube studies. In one small-scale study, melatonin (when used in combination with conventional medical treatment) improved survival rates in 9 out of 14 patients with metastatic prostate cancer. Interestingly, since meditation may cause melatonin levels to rise it appears to be a valuable addition to the treatment of prostate cancer. More research is needed before doctors can make recommendations in this area.

Melatonine