NOW Foods Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, Supports Relaxation*, 120 Veg Capsules | ⭐ Flexiology.Store Recommended
$19.92
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Price: $19.92
(as of Oct 01, 2025 21:29:11 UTC – Details)
Encourages Positive Mood* Promotes Restful Sleep* L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet.* L-Tryptophan is critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and proper immune system function.* Every lot of NOW® L-Tryptophan is tested to be free of Peak E and microbial contamination. Natural color variation may occur in this product.
Is Discontinued By Manufacturer : No
Product Dimensions : 2.7 x 2.7 x 4.75 inches; 4.23 ounces
Item model number : 0167
Department : Health and Beauty>Health and Wellness
Date First Available : October 2, 2001
Manufacturer : NOW Sports – Nutrition and Wellness
ASIN : B0019LWV56
Best Sellers Rank: #8,556 in Health & Household (See Top 100 in Health & Household) #76 in Sleep & Snoring Aids #94 in Herbal & Nutritional Sleep Supplements #985 in Sales & Deals
Customer Reviews: 4.6 4.6 out of 5 stars 5,531 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
An essential amino acid that is not synthesized by the body and must be obtained by diet or supplementation.
Critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and proper immune system function*
Every lot tested to be free of Peak E and microbial contamination
Take 1-2 capsules 2 to 3 times daily on an empty stomach, with final dose at bedtime, or as directed by your physician
Packaged in the USA by a family owned and operated company since 1968.
Customers say
Customers report that the supplement helps them sleep well and works within half an hour, with one noting substantial results from taking just two capsules. The product receives positive feedback for its quality, value, and effectiveness as a mood and depression aid, with one customer mentioning it helps with fibromyalgia. Customers appreciate its essential amino acid content and its role as a precursor to serotonin and melatonin. Pain levels show mixed reactions, with some experiencing relief while others report severe stomach pain.
AI Generated from the text of customer reviews
🌿 Expert Tip: Selected by our Flexiology Experts for quality & value.
⚠️ Disclaimer: Information is for educational purposes and not a substitute for medical advice. Consult your physician before use. Flexiology.Store is not responsible for any adverse effects.
13 reviews for NOW Foods Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, Supports Relaxation*, 120 Veg Capsules
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SmithSL503 –
Works like a charm
My husband uses this to help him fall asleep and he likes it real well. Been using it for years now.
Michael E. –
Good stuff!
NOW Foods GABA, L-Tryptophan, 5-HTP, Taurine, I take all of these daily now. Enhances my overall mood, attitude, outlook on life, and energy levels. I simply feel better taking these supplements. Helps me through the depressing winter months.For myself, I find that these are best taken on an empty stomach with a cup of coffee in the morning, and then I won’t eat for an hour afterwards. Then I might take again at around 6 PM, as I typically don’t eat dinner until 8 PM.Good stuff, good quality. Repeat customer.
Melanie O. –
Life-Changing Supplement
I’ve been using NOW Foods L-Tryptophan 500 mg for a few months, and I am truly amazed by the difference it’s made in my daily life. I’ve struggled with anxiety and irritability symptoms for years, and this supplement has been a game-changer. Since I started taking it, I’ve noticed a significant reduction in anxiety and mood swings. I feel more relaxed, focused, and less easily frustrated throughout the day.What I love most is that it doesn’t cause any drowsiness or side effects – just a natural sense of calm and well-being. The capsules are easy to take, and the 120-count bottle lasts a long time, making it a great value. If you’re dealing with similar symptoms, I highly recommend giving this a try – it’s been incredibly helpful for my mental health!
KathleenHemrich –
Tripping the “night” fantastic!
Okay, so, I waited 3 weeks before reviewing. I wanted to see if L-Trptophan (I will call it “T” from here on in since it’s shorter) worked, or even helped or did anything remotely positive towards helping me sleep better.what has not worked for me (keep in mind they may work for you):Valerian – did nada for me5 -HTP – nada as wellCatnip – supposed to be a sleep enhancer believe it or not – nopePassionflower – nopeKirkland sleeping aids – helped a wee bit but not enoughTylenol PM – ha ha..not a bitAlcohol – I really struggled with not using this to help me sleep – there were times when I would use wine but it became such a habit plus it altered my personality – please just don’t…trust meMarijuana – I smoked the indica kind – supposed to help you sleep – all it did is make me think for 3 hours that my bones were uneven (is there such a concept?) anyway, I am open to perhaps the oils, I live in Vegas so it’s legal hereWorked:Magnesium – helps keep me regular but I don’t think it helps me sleepMeditation – Yes, if I do it – esp. right before bed – it helps quiet my mind – I am working on doing it moreMelatonin – yes, I take 10 mg at night now that I am on “T” – it’s supposed to help with “T”Quitting my job and going back to school for what I love – helped A LOT but I still struggle with anxiety when I wake up during the nightWalking – or any kind of exercise that gets you to moveQuitting cigs – yes, they bring you comfort but they are a stimulant and we all know are bad for youEating cleaner – yes, ice cream is fun and so are burgers but it takes a lot to digest and that can keep you awake and or give you a restless sleepEar plugs/eye mask – cool room – no animals while you sleep (except maybe your absolute best fur baby but if they wake you up often – they go to).Tradazone – wonderful for about 3 months, then at 200 MG – it stopped working.Finally, Seroquel – at a high dose it’s an anti-pyschotic but at a low dose it’s been prescribed by doctors to help others sleep. This stuff is strong – I do not recommend it unless your (like I was) quality of life is so bad because of lack of sleep – even then – talk with your doctorBack to my insomnia – what’s criminal (or should be) is that I do not sleep DEEPLY enough, AND it takes me like 1-3 hours to fall asleep (this is WITH Seroquel). I have spent MANY nights crying – like close to hysterics because I struggled so much with it. Of course my sleep was worse when I had to get up early and coupled withwhen I hated my job. (quit if you can – seriously).So, I have been on “T” for 3 weeks now, I will say the first week, I did not know what I was doing, I was taking “T” 4 or 5 x a day WITH food, without food etc. I think I was thinking more is more…it’s not.I finally got the “TAKE WITHOUT FOOD” part and it started to work!When I say work, this does not mean I do not still take the seroquel – because I do but I take the “T” on an empty stomach about 3 X a day (meaning 2 capsules each time) which amounts to 3000 MG.My sleep is not only deeper but I do not wake up as much (I would wake up about 6X at nite…to go to the bathroom or just honestly get up because I was wide awake and was tired of tossing and turning). I slept a little under 7 hours the other day and normally? I’d be feeling really sick – I feel like I have the flu or worse if I don’t sleep enough – not this time. I was FINE – not only fine but instead of feeling crummier as the day went on? I actually felt better.I really hope this stuff is the real deal. I left off ONE star because I want to update this (can I make this any longer of a review?) because this is very important to me – and I know it probably is to you – sleep is SO dang important! Most Americans do not get enough of it. Here’s hoping this review helped you and that Tryptophan will help you too.
mavis –
Great for sleep!
Helps with sleep! Natural supplement as an alternative to RX meds. Highly recommend!
Sophia –
Reliable products from NOW
Love NOW products
Great read, enjoyed the build up attraction between them and how miscommunications and assumptions can lead to frustration, and then romance! –
Sleep
Helps me sleep
Hoss –
Not sure
I’m not sure about this. Didn’t notice an effect. I probably didn’t need to take this in the first place. There was no negative effect either.
𝓐 –
This product made me stabilize my feelings. I really need those.I always keep going this.
Luis Valdes –
Gracias
Rosali –
NOW é uma ótima marca, pena que sejam tão caros aqui no Brasil
SP –
Really helps with the depression/negative mood . This simple improvement in mood and feeling positive has great implications in day to to day life eventually leading to things overall looking upwards !
Benjamin –
Es buen producto solo que mi estómago no soporto el producto. Se los regale a mi hermano y a él le están funcionando bien. Depende de cada organismo.