Helps maintain serotonin levels for healthy mood. Also supports natural, restful sleep. How Does NSI® L-Tryptophan work? L-tryptophan is an essential amino acid—meaning the body does not produce it on its own; it must be obtained through diet. It's found in small amounts in nuts, grains, beans, legumes, cheese, eggs, and meat. L-tryptophan breaks down into four different metabolites in the body. Most notably, it's converted to 5-HTP, which is then converted to serotonin—a neurotransmitter that helps regulate mood, sleep and appetite. Low serotonin levels in the brain are associated with poor mental health and sleep disturbances. Supplementing with L-tryptophan may help raise serotonin levels, promoting better mood, relaxation and rest. In addition, L-tryptophan is broken down into melatonin, a hormone that regulates the body's sleep-wake cycle, and the B-vitamin, niacin, which helps maintain healthy function of the nervous system, digestive system and skin. L-tryptophan also plays a part in the production of compounds called kynurenines, which have been found to suppress immune response, an effect that may benefit those with overactive immune function. NSI® L-Tryptophan is better because it:. Delivers 500 mg of pure L-tryptophan in one one-capsule serving. Is safe for vegetarians. . Did You Know? All NSI supplements are packaged in HDPE (High Density Polyethylene) bottles. These bottles keep moisture vapor out, protecting the freshness and integrity of their contents, and are 400% more effective compared other brands currently using PET (Polyethylene Terephthalate) bottles. HDPE bottles do not break as glass can and are also recyclable so we urge you to please recycle them.
Average Customer Rating:
4.7 out of 5
45 of 47 (96%) customers would recommend this product to a friend.
Smooth and easy taking everyday,
May 12, 2009
By peppervixfrom Ridgewood,NY
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"This works similar to turkey and much easier to swallow in pill form. If you care about your health then NSI L-Tryptophan -- 500 mg is what you want in your body, My health and body feels so great inside and out with this pill. I am so happy to have found this pill."
Age:
45-54
Gender:
Female
Daily supplement usage:
3-5 supplements daily
Referral source:
Friend
Reason for usage:
Promote overall health
Duration of use:
Over 180 days
carb cravings,
April 25, 2009
By origionalbabefrom NC
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
4
out of 5
Satisfaction:
4
out of 5
"I tried this to reduce carb cravings to lose weight. Along with l-tryosine. It did help with the cravings somewhat."
Age:
35-44
Gender:
Female
Daily supplement usage:
3-5 supplements daily
Referral source:
Other
Reason for usage:
Specific health concern
Duration of use:
Less than 30 days
WORKS AS ADVERTISED!,
April 21, 2009
By JJTopp99from Neptune Beach, Florida
"Must be taken on an empty stomach (at least two hours after eating) in order to realise optimal results. Also, best if you can set aside eight hours of sleep, otherwise you may feel a bit groggy with less sleep time. I take it two hours BEFORE retiring. I also take 3 mg of melatonin 20 minutes before I go to bed as well."
Age:
55-64
Gender:
Male
Daily supplement usage:
6+ supplements daily
Referral source:
Physician
Reason for usage:
Promote overall health
Duration of use:
30-60 days
tossing and turning all night.,
April 14, 2009
By Reet
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"I have been a restless sleeper for over a year now. I was recently in the hospital and needed my sleep. A friend recommended NSI L-Tryptophan, I didn't think it would work. But I was very pleased with the results. I'm sleeping just like I used to, all through the night. I think it's wonderful."
"I am sleeping through the night now with the help of this and magnesium."
Age:
55-64
Gender:
Male
Daily supplement usage:
1-2 supplements daily
Referral source:
Self-referred
Reason for usage:
Promote overall health
Duration of use:
30-60 days
High quality product at a good price,
February 15, 2009
By hazelnutfrom Seattle, WA
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"This product helps me get a good night's sleep with no after effects the next day."
Age:
45-54
Gender:
Female
Daily supplement usage:
6+ supplements daily
Referral source:
Physician
Reason for usage:
Specific health concern
Duration of use:
Less than 30 days
"I take 2 of these 500mg capsules about 20 mins before bed and it really helps me get to sleep. Capsules are kind of big but not too bad... much easier than eating a whole turkey every night.
These don't knock me out for the entire night but I can usually count on a solid 3-5 hours of sleep and I don't feel groggy the next day.
They work well for me and I've got some serious insomnia, sleep without taking tryptophan is very difficult, I know this product works and I hope that it helps you too."
Glad it is back,
December 31, 2008
By Teenafrom Moultrie, GA
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"L-Tryptophan is the safest product to allow you to sleep naturally. It is not a drug nor does it react like a drug. For value it is the best priced item. I am extremely satisfied with this product."
Age:
65-74
Gender:
Female
Daily supplement usage:
1-2 supplements daily
Referral source:
Self-referred
Reason for usage:
Specific health concern
Duration of use:
Over 180 days
"Buy this often from this site...good deal on it! Product is excellent and most beneficial if this is something a person wants or needs to use. Excellent grade."
surprise results,
October 7, 2008
By galaxygirlfrom Washington State
"So many products make claims I am a total skeptic. However I have studied nutritional supplements for years and after taking a long look at the amino acids, I thought perhaps the L-Tryptophan could help my long time problem of not being able to sleep soundly and long enough. On a good night the last 25 years, I would get a scant 6.5 hours and always woke up tired. AFter three weeks of taking the L-Tryptophan as directed, I was able to not only go to sleep earlier, but sleep soundly and waken rested--after a solid 8 hours sleep which I have not gotten in years. I have been taking it for two months and am thrilled with the results. I must have been low in this nutrient. I don't know if everyone has a deficiency that this nutrient would help, but is sure helped me. I think it is important to note I eat no red meat and very little any other kinds. These are foods that furnish the best supply of this nutrient and that could be one reason I was so low on it. I hope this will help someone else. Remember it is not a magic bullet, it is nutrition and will have to remain part of your diet. Heed the labels and any warnings if you are taking any medications! You should not take this with a seratonin re-uptake inhibitor as it warns against it."
Age:
65-74
Gender:
Female
Daily supplement usage:
6+ supplements daily
Referral source:
Self-referred
Reason for usage:
Specific health concern
Duration of use:
30-60 days
Works Well,
August 19, 2008
By Azraelfrom New York
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"Great product, but may take time to know when to take it so your are not gorggy. Take an energy booster with it."
Age:
25-34
Gender:
Male
Daily supplement usage:
3-5 supplements daily
Referral source:
Self-referred
Reason for usage:
Specific health concern
Duration of use:
30-60 days
"The best thing is that L-Tryptophan won't disrupt your delicately balanced sleep-wake cycle and actually works. From my many years of nutritional medicine research L-Tryptophan's antidepressant effects can be greatly enhanced by taking L-Tyrosine. You don't want lopsided neurotransmission. L-Tryptophan increases serotonin which, over time, can decrease dopamine/norepinephrine levels so I highly recommend adding L-Tyrosine during the day to acheive mental health balance. With this dynamic duo I haven't had a low mood in years."
Age:
35-44
Gender:
Male
Daily supplement usage:
3-5 supplements daily
Referral source:
Self-referred
Reason for usage:
Promote overall health
Duration of use:
Less than 30 days
Natural Mood Lift,
June 1, 2008
By sevenrosesfrom SC
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"I love this product. Immediately after taking it I find myself sighing and relaxing. My mind becomes calm and focused and I feel much more present and uplifted. Its helped me sleep better and stay more centered during the day. I started taking it several times per day several weeks ago. I now find I only need it a couple times a day."
Age:
45-54
Gender:
Female
Daily supplement usage:
6+ supplements daily
Referral source:
Other
Reason for usage:
Specific health concern
Duration of use:
61-180 days
Wonderful Sleep Helper,
May 20, 2008
By scrubbrushfrom Sunnyvale, CA
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"This product works great when I start taking it within 2-3 hours of settling in to sleep. It's not for taking right before falling in the sack, as it does take a bit of time to work. The resulting sleep is great, deep sleep, as long as I go to bed when I feel ready. One thing I've found with this product is once it starts kicking in and I feel drowsy, there is a short window of time when I have to go to bed and go to sleep or else I get quite cranky and then seem to have even more trouble sleeping. So, it's for serious sleepers."
Age:
35-44
Gender:
Female
Daily supplement usage:
6+ supplements daily
Referral source:
Self-referred
Reason for usage:
Specific health concern
Duration of use:
61-180 days
Thumbs up,
February 25, 2008
By j75080from Dallas, TX
Value:
4
out of 5
Quality:
4
out of 5
Effectiveness:
4
out of 5
Satisfaction:
4
out of 5
"Good product at good price."
Age:
55-64
Gender:
Male
Daily supplement usage:
1-2 supplements daily
Referral source:
Other
Reason for usage:
Specific health concern
Duration of use:
30-60 days
Insomnia relief,
February 9, 2008
By fernfrom Colorado
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"I've had insomnia for over 10 years, but the combination of this product (3 caps) along with Standard Process Lab's Min-Tran has allowed me to sleep normally again after years of searching for a solution."
Age:
45-54
Gender:
Female
Daily supplement usage:
6+ supplements daily
Referral source:
Other
Reason for usage:
Specific health concern
Duration of use:
Over 180 days
L-Tryptophan,
February 6, 2008
By Busybeafrom Lubbock, TX
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"Got this product to see if it would help with my sleep problems. Works very well and am very satisfied with it. Also helps to curb my appetite. Found that taking it about 6:30 every evening really helps me get a good nights sleep. Saw this product in the Vitacost catalogue and decided to give it a try."
Age:
65-74
Gender:
Female
Daily supplement usage:
1-2 supplements daily
Referral source:
Other
Reason for usage:
Promote overall health
Duration of use:
Over 180 days
"I USE THIS FOR SLEEP. FIRST USED ABOUT 25 YEARS AGO AT A PAIN AND STRESS CENTER. I HAVE HAD GREAT RESULTS"
Age:
55-64
Gender:
Male
Daily supplement usage:
6+ supplements daily
Referral source:
Physician
Reason for usage:
Specific health concern
Duration of use:
Over 180 days
Satisfied,
October 10, 2007
By Waynefrom Omaha, NE
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"I am pleased to be taking this product along with Omega 3 fish oil. I have been on differing amounts of SSRIs for seven years, so now I am very happy to find help in natural products. I only wish I had known of them sooner. If you have trouble with serotonin levels too, you must try this. It is helping me!"
Age:
55-64
Gender:
Male
Daily supplement usage:
3-5 supplements daily
Referral source:
Self-referred
Reason for usage:
Specific health concern
Duration of use:
30-60 days
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