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Source Naturals® L-Tryptophan
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Source Naturals® L-Tryptophan50 Capsules
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Mood, Relaxation, Sleep*
The essential amino acid L-tryptophan helps support relaxation, restful sleep, and positive mood. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and street response and sleep/wake cycles. L-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity. If needed, L-tryptophan converts to niacin in the body, which supports circulation, a healthy nervous system, the metabolism of food, and the production of hydrochloric acid for the digestive system. Source Naturals L-TRYPTOPHAN is extremely pure and is regularly tested to ensure the highest standards of quality.*
HYPOALLERGENIC: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
- Supplement Facts
Serving Size 3 Capsules Servings Per Container 20 Amount Per Serving % DV L-Tryptophan 1.50 g 0% Iron (naturally occurring) 575.00 mcg 3% ** Daily Value (DV) not established
Keep out of reach of children
Do not use if tamper evident seal is broken or missing. © SOURCE NATURALS INC.
P.O. BOX 2218
SANTA CRUZ, CA 95062
- Health Notes
- Reliable and relatively consistent scientific data showing a substantial health benefit.
- Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.
- For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support.
Our proprietary "Star-Rating" system was developed to help you easily understand the amount of scientific support behind each supplement in relation to a specific health condition. While there is no way to predict whether a vitamin, mineral, or herb will successfully treat or prevent associated health conditions, our unique ratings tell you how well these supplements are understood by the medical community, and whether studies have found them to be effective for other people.
For over a decade, our team has combed through thousands of research articles published in reputable journals. To help you make educated decisions, and to better understand controversial or confusing supplements, our medical experts have digested the science into these three easy-to-follow ratings. We hope this provides you with a helpful resource to make informed decisions towards your health and well-being.
This supplement has been used in connection with the following health conditions:
Used for Amount WhyInsomnia 1 to 2 grams at bedtime [3 stars]L-tryptophan has been used successfully for people with insomnia in many studies,including double-blind trials.Pain 2 to 4 grams per day [3 stars]Double-blind research has also shown that oral L-tryptophan can increase tolerance to acute pain.Premenstrual Syndrome 2 to 6 grams per day, during the second half of the menstrual cycle [3 stars]Some research suggests that L-tryptophan may help balance mood symptoms associated with PMS.Bipolar Disorder Refer to label instructions [2 stars]Supplementation with L-tryptophan has led to improvement in depression in many studies, though its effect on bipolar disorder needs more study.Depression 3 to 6 grams per day [2 stars]Several controlled trials have found L-tryptophan as effective as antidepressant medications. Depressed people should consult a doctor before use.Obsessive-Compulsive Disorder 6 grams per day (only under a doctor's supervision) [2 stars]With a doctor's supervision, some people with OCD have experienced some symptom relief from supplementing with L-tryptophan.Schizophrenia 1 to 8 grams per day (under a doctor's supervision) [2 stars]L-tryptophan supplementation has occasionally been helpful for specific schizophrenia symptoms, such as aggression and memory function.Seasonal Affective Disorder With doctor's supervision, 2 to 4 grams per day, increasing up to 6 grams if no improvement [2 stars]Some research suggests that L-tryptophan alone or in combination with light therapy may improve SAD symptoms.Anxiety Refer to label instructions [1 star]Research suggests a connection between anxiety and serotonin deficiency and that its precursur L-tryptophan may help reduce anxiety in people with social anxiety disorder and neurosis.Attention Deficit-Hyperactivity Disorder Refer to label instructions [1 star]Imbalances in the brain chemical serotonin, or low blood levels of its precursor, L-tryptophan, have been associated with ADHD in some (though not all) studiesBulimia Refer to label instructions [1 star]L-tryptophan may be beneficial for people with bulimia, as this amino acid synthesizes serotonin, a hormone that helps regulate food intake and appetite.Bulimia
Refer to label instructions [1 star]Vitamin B6, when taken with L-tryptophan, has been shown to improve eating behavior, feelings about eating, and mood among women with bulimia.Hypertension Refer to label instructions [1 star]The brain chemical serotonin may affect blood pressure regulation, and animal research suggests its precursur L-tryptophan may help prevent and manage hypertension.Migraine Headache Refer to label instructions [1 star]Preliminary research has found abnormally low levels of serotonin in the brains of people suffering a migraine attack, which was reversed with L-tryptophan supplements.Obesity Refer to label instructions [1 star]Animal research and preliminary human reports suggest that serotonin precursors such as L-tryptophan might help control appetite and promote weight loss.Restless Legs Syndrome 1 to 2 grams at bedtime [1 star]Preliminary research has shown some benefit reducing symptoms of restless legs syndrome and the insomnia that often accompanies it.Smoking Cessation Refer to label instructions [1 star]In one study, tryptophan supplements along with a high-carbohydrate diet lessened withdrawal symptoms and helped people smoke fewer cigarettes.Tardive Dyskinesia Refer to label instructions [1 star]Animal research and preliminary human reports suggest that L-tryptophan may help reduce the severity of symptoms.
L-Tryptophan is an essential amino acid that the body requires to synthesize proteins and specialized molecules such as the neurotransmitter serotonin. Serotonin appears to play significant roles in sleep, emotional moods, pain control, inflammation, intestinal peristalsis, and other body functions.1
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2015.
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- Ratings and Reviews
Reviewed by 2 customers
Displaying reviews 1-2
- Easy To Use Inexpensive
- Good Value
- Before Bed
- Sleep Aid
Comments about Source Naturals® L-Tryptophan:
This actually works as a sleep aid, promoting both intial sleep (falling asleep) and mainting sleep throught the night. It doesn't leave you groggy in the morning, either. No side effects I can find and it is safer than pure 5-HTP which can cause serotonin syndrome in large dosages. Great product!
- How many supplements do you use on a daily basis?:
- 3-5 Supplements Daily
- Which of the following is the most important to you?:
- Has Side Effects
Comments about Source Naturals® L-Tryptophan:
seems good to take, helps me sleep, i think - but does cause a little stomach upset
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