5-HTP or 5-Hydroxytryptophan is an amino acid that occurs naturally in the body. It leads to an increase in levels of serotonin - a neurotransmitter which regulates behavior and mood, and melatonin – a hormone linked with the normal sleep pattern. 5-HTP is used in Advanced Muscle Science Nocturnabol because it is known to reduce anxiety and depression as it is an antidepressant. It is used in the treatment of insomnia, migraine and Fibromyalgia which causes pain in the muscles, tendons and ligaments, severe fatigue and disturbed sleep. It also assists weight loss by reducing appetite. It is found in small amounts in cheese and white meat. Using the supplement in excess can cause side effects like heart valve disease, nausea, etc. and hence it is essential to seek medical advice before using it.

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L-Tryptophan is an essential amino acid made from proteins during the digestion by the action of proteolytic enzymes. It promotes the production of serotonin that is involved in vasopressure regulation. It also helps regulate blood pressure, and prevents atherosclerosis. It is also involved in treating depression, anxiety, enhance mood, improve sleep, and control impulses. It may also be used for treatment of attention deficit patients. It also helps in weight loss because it curbs the cravings and suppresses appetite. L-Tryptophan also plays an important role in the production of niacin. It helps relieve and alleviate the symptoms of fibromyalgia. It also promotes the production of growth hormones.

Melatonin refers to a hormone made by a brain part called the pineal. Melatonin helps bodies in understanding the time to go to bed and sleep and also the time to wake up. Melatonin is also available in pill form as they are available in natural and synthetic forms. Natural melatonin is manufactured from the pineal glands of the animals and this can get contaminated with virus. This is the reason that it is not recommended. Synthetic melatonin has no risk involved. Melatonin is used in treating insomnia and prevents jet lag. Melatonin promotes health or treats disease has very little scientific evidence. Some people have reported headache, stomach discomfort and depression, however further study is being done. Melatonin is available without the prescription of a doctor in the drug stores and health food stores in the United States. But, as it is not regulated by the government, the safety, purity and effectiveness is far from being guaranteed.