CrN Craig L-Tryptophan 500mg 60 caps
Craig Nutraceuticals L Tryptophan 60 Capsules
L-Tryptophan and 5-HTP - How to decide which is
right for you.
Some people are helped by 5-HTP, others are not.
There are several reasons for these differences that can help in deciding which
is right for you.
-
The body remains in control with L-Tryptophan,
but does not with 5HTP. The creation of neurotransmitter serotonin begins
with L Tryptophan which converts to 5HTP, which converts to serotonin. The
rate-limiting step (the step the body uses to regulate serotonin production)
is between L-Tryptophan and 5HTP. If you take 5HTP your body looses control
of the serotonin pathway.
-
5HTP converts to serotonin outside the brain.
Since the conversion of 5HTP to serotonin is not regulated some of the
5HTP converts to serotonin in the gut, causing upset stomach and nausea.
Since serotonin does not cross the blood-brain barrier, serotonin produced
outside the brain is not available to the brain. In Europe, 5HTP is combined
with carbidopa, a pharmaceutical drug that reduces conversion of 5HTP to
serotonin outside the brain. This is rarely done in the U.S.
-
Disease impairs 5HTP transport across the
blood-brain barrier. In people with certain diseases, including severe
depression, there is blockage of the transmission of 5HTP across the
blood-brain barrier. In these patients supplementation with L Tryptophan,
which does cross the blood-brain barrier, can provide increased brain
serotonin levels.
-
Unlike 5HTP L-Tryptophan has many other uses
in the body. It can be converted to niacin. It is a required precursor
to the kynurenines, a family of biochemicals that help regulate the immune
system. As an essential amino acid, L-Tryptophan is required for your body to
work properly.
Even though L-Tryptophan and 5HTP are metabolized
to serotonin along the same biochemical pathway, individual differences in
metabolism can cause significant differences in effectiveness. Craig
Nutraceuticals Inc uses only high quality L Tryptophan in it's products.
|
L-Tryptophan |
5HTP |
|
Body regulates
conversion to serotonin |
Conversion is
unregulated |
|
Body controls
WHERE conversion occurs |
Partially
converts to serotonin in the gut and blood, not the brain |
|
Cross the
blood-brain barrier in sickness and health |
Disease blocks
the absorption process |
|
L-Tryptophan is
an essential amino acid |
5HTP is not
essential |
|
Utilized in many
body functions |
Can convert to
serotonin only |
The above information was provided by Craig
Nutraceuticals, Inc., the supplier of a very high quality L-Tryptophan
supplement. We have chosen Craig Nutraceuticals, Inc. as our supplier for L-Tryptophan
capsules.
| Craig Nutraceuticals
Supplement Facts
Serving Size 1 Capsule |
Amount Per Serving |
% Daily Value |
| Pure L-Tryptophan |
500mg |
* |
| *Daily Value Not
Established |
Other Ingredients: Gelatin Capsule, Vegetable Stearic Acid, Silica,
Plant Cellulose.
Storage: To ensure freshness, keep lid tightly closed. Keep in
cool, dry place out of direct sunlight.
Suggested Use: Adults, Take one or two capsules 15 to 30 minutes
before bedtime with 6-8 oz. of water or a small amount of carbohydrate such as
diluted fruit or vegetable juice to facilitate uptake. Should not be taken
with milk, hot fluids, or other proteins (recommended 1 hour to either side of
protein). Make sure that a good B-Complex is taken during the day with a
balance of B-2 (Riboflavin), B-3 (Niacin), and especially B-6 (Pyridoxine) to
exceed 5 capsules or 2.5 grams per day unless directed by your physician.
Warning: If you are pregnant, nursing, or using medications
(most importantly certain classes of anti-depressant drugs), consult your doctor
before using. As with any dietary supplement, if any adverse reaction
should occur, discontinue use.
Keep Out of Reach of Children.
QUALITY AND POTENCY GUARANTEED
|
