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5-Hydroxytryptophan (5-HTP) is derived biochemically from the
essential protein amino acid L-tryptophan. Tryptophan and 5-HTP
dietary are believed to aid in increasing serotonin levels in the
brain, which may have a beneficial effect on sleep, mood, anxiety,
aggression, appetite, temperature, sexual behavior, and pain
sensation.
Until November, 1989, L-tryptophan was a popular
nutritional supplement in the U.S. In November, 1989, the FDA
recalled supplementary L-tryptophan because of several reports
associating the amino acid with some severe side effects. These
side-effects were part of a syndrome called the eosinophilia-myalgia
syndrome. As it turned out, the cause of the syndrome was due to a
contaminant in a batch of L-tryptophan that was produced from a
genetically modified microorganism (GMO), and not L-tryptophan
itself. Although the manufacturing of 5-HTP is different from that
of tryptophan, there is still concern that some 5-HTP supplements
may contain similar contaminants. It is important to obtain dietary
supplements of 5-HTP from manufacturers that adhere to high quality
standards. At least two organizations, NSF International and the
United States Pharmacopeia (USP), offer programs that make sure
manufacturers follow high quality practices.
Medical
Indications of 5-HTP
5-HTP may be helpful in
treating a wide variety of conditions related to low serotonin
levels, including the following:
- Depression
Low serotonin levels can be a
contributing factor to the onset of depression. As many drugs used
for depression are used to increase serotonin leveles 5-HTP be be
just as effective in treating individuals with mild depression.
Individuals taking 5-HTP have seen signs of improvements in mood,
anxiets, insomnia and other physical symptoms.
- Fibromyalgia
Preliminary evidence suggests that low
serotonin levels may play an important role in the development of
fibromyalgia. 5-HTP supplementation, through its ability to raise
serotonin levels, has shown to improve sleep quality and reduce
pain, stiffness, anxiety and depression for fibromyalgia
sufferers.
- Insomnia
Some studies suggest that supplementation
with tryptophan before you go to bed may help to induce sleepiness
and waking up. Specifically is has been suggested that 5-HTP
supplementation may help treat insomnia directly associated with
depression.
- Headaches
Some evidence suggests that 5-HTP may help
reduce the pain associated with headaches and migraines.
- Obesity and Weigh Control
A study of overweight
individuals with diabetes suggests that supplementation with 5-HTP
may decrease fat and carbohydrate intake by reducing appetite. It
appears to do this by stimulating serotonin production in the
brain. While 5-HTP has not yet been extensively researched, some
human and double-blind studies have shown that 5-HTP promotes
weight loss. Dosage and
Administration
When taking 5-HTP to treat depression
it has been suggested that 300 mg per day is usually effective,
although this has not been conclusively determined. In a
placebo-controled trial a single 100-mg nighttime dose of 5-HTP was
sufficient to improve the duration and depth of sleep for suffers of
insomnia. Amounts ranging from 400-600 mg per day have been suggest
for to reduce the duration and severity of migraine headaches. For
tension related headaches, 100 mg of 5-HTP (3 times per day) has
shown to significantly reduce severity.
Appetite reduction
and consequential weight loss (averaging 11 pounds in 12 weeks) has
occurred with amounts of 600 to 900 mg daily. Ohter studies have
indicated that 750 mg of 5-HTP taken daily can effectively decrease
carbohydrate and fat intake and promote weight loss.
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