NOW Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, 120 Veg Capsules
NOW Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, 120 Veg Capsules
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NOW Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, 120 Veg Capsules

4.8 stars out of 48 reviews
(4.8)|
48 ratings

Key item features

  • SUPPORTS RELAXATION*/PREMIUM GRADE: An essential amino acid that is not synthesized by the body and must be obtained by diet or supplementation.
  • ENCOURAGES POSITIVE MOOD*/PROMOTES RESTFUL SLEEP*: 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.
  • CERTIFICATIONS/CLASSIFICATIONS: Soy Free, Nut Free, Vegan/Vegetarian, Non-GMO, Egg Free, Dairy Free, Made without Gluten
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968.
Current price is Now $22.41
You save $9.10
was $31.51
18.7 ¢/count
Price when purchased online
  • Free shipping
  • Free 30-day returns

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Columbus, 43215
Arrives by Mon, Feb 9
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Sold and shipped by DailyVita
4.582174462705436 stars out of 5, based on 1582 seller reviews(4.6)
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$20.33
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Shipping, arrives by Mon, Feb 9 to Columbus, 43215
Sold and shipped by Nutricelebrity
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NOW Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, 120 Veg Capsules
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Comparison Chart:
Size120NOW Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, 120 Veg Capsules60NOW Supplements, L-Tryptophan 1,000 mg, Double Strength, Encourages Positive Mood*, 60 Tablets4.35NOW Foods L-Tryptophan, 500 mg, 60 Veg Capsules120 CapsulesNutricost L-Tryptophan 500mg, 120 Capsules, 120 Servings - Health Supplement4.30NOW Foods 5-HTP, 60 Veg Capsules4.40Doctor's Best L-Tryptophan from Tryptopure, Non-GMO, Vegan, Gluten Free, Soy Free, Helps Sleep, 90 Veggie Caps180NOW Supplements, 5-HTP (5-hydroxytryptophan) 50 mg, Neurotransmitter Support*, 180 Veg Capsules365 CapsulesBulkSupplements 5-HTP 200mg Capsules - 5-Hydroxytryptophan, Dietary Supplement - 1 Capsule per Serving, 365 Count90 Count (Pack of 1)Life Extension L-Tryptophan 500 mg – L-Tryptophan Supplement for Healthy Sleep and Stress Response Support – Gluten-Free, Non-GMO, Vegetarian – 90 Capsules90NOW Supplements, L-Tyrosine 750 mg, Supports Mental Alertness*, 90 Veg Capsules
Enteral medication formCapsulesNOW Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, 120 Veg CapsulesTabletsNOW Supplements, L-Tryptophan 1,000 mg, Double Strength, Encourages Positive Mood*, 60 TabletsCapsulesNOW Foods L-Tryptophan, 500 mg, 60 Veg CapsulesCapsulesNutricost L-Tryptophan 500mg, 120 Capsules, 120 Servings - Health Supplement-NOW Foods 5-HTP, 60 Veg CapsulesVeggie CapDoctor's Best L-Tryptophan from Tryptopure, Non-GMO, Vegan, Gluten Free, Soy Free, Helps Sleep, 90 Veggie CapsCapsulesNOW Supplements, 5-HTP (5-hydroxytryptophan) 50 mg, Neurotransmitter Support*, 180 Veg CapsulesCapsulesBulkSupplements 5-HTP 200mg Capsules - 5-Hydroxytryptophan, Dietary Supplement - 1 Capsule per Serving, 365 CountVegCapLife Extension L-Tryptophan 500 mg – L-Tryptophan Supplement for Healthy Sleep and Stress Response Support – Gluten-Free, Non-GMO, Vegetarian – 90 CapsulesCapsulesNOW Supplements, L-Tyrosine 750 mg, Supports Mental Alertness*, 90 Veg Capsules
Primary ingredientTryptophanNOW Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, 120 Veg CapsulesL-tryptophanNOW Supplements, L-Tryptophan 1,000 mg, Double Strength, Encourages Positive Mood*, 60 Tablets-NOW Foods L-Tryptophan, 500 mg, 60 Veg CapsulesL-TryptophanNutricost L-Tryptophan 500mg, 120 Capsules, 120 Servings - Health Supplement-NOW Foods 5-HTP, 60 Veg CapsulesL-tryptophanDoctor's Best L-Tryptophan from Tryptopure, Non-GMO, Vegan, Gluten Free, Soy Free, Helps Sleep, 90 Veggie Caps5-HTPNOW Supplements, 5-HTP (5-hydroxytryptophan) 50 mg, Neurotransmitter Support*, 180 Veg Capsules5-HTPBulkSupplements 5-HTP 200mg Capsules - 5-Hydroxytryptophan, Dietary Supplement - 1 Capsule per Serving, 365 CountL-TryptophanLife Extension L-Tryptophan 500 mg – L-Tryptophan Supplement for Healthy Sleep and Stress Response Support – Gluten-Free, Non-GMO, Vegetarian – 90 CapsulesTyrosineNOW Supplements, L-Tyrosine 750 mg, Supports Mental Alertness*, 90 Veg Capsules
FlavorUnflavoredNOW Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, 120 Veg CapsulesUnflavoredNOW Supplements, L-Tryptophan 1,000 mg, Double Strength, Encourages Positive Mood*, 60 TabletsUnflavoredNOW Foods L-Tryptophan, 500 mg, 60 Veg Capsules-Nutricost L-Tryptophan 500mg, 120 Capsules, 120 Servings - Health SupplementUnflavoredNOW Foods 5-HTP, 60 Veg CapsulesUnflavoredDoctor's Best L-Tryptophan from Tryptopure, Non-GMO, Vegan, Gluten Free, Soy Free, Helps Sleep, 90 Veggie CapsUnflavoredNOW Supplements, 5-HTP (5-hydroxytryptophan) 50 mg, Neurotransmitter Support*, 180 Veg CapsulesUnflavoredBulkSupplements 5-HTP 200mg Capsules - 5-Hydroxytryptophan, Dietary Supplement - 1 Capsule per Serving, 365 CountUnflavoredLife Extension L-Tryptophan 500 mg – L-Tryptophan Supplement for Healthy Sleep and Stress Response Support – Gluten-Free, Non-GMO, Vegetarian – 90 CapsulesUnflavoredNOW Supplements, L-Tyrosine 750 mg, Supports Mental Alertness*, 90 Veg Capsules
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Customer ratings & reviews

4.8 out of 5 stars
stars48 ratings33 reviews
How item rating is calculated
  1. 5 stars90% (43)
  2. 4 stars6% (3)
  3. 3 stars2% (1)
  4. 2 stars0% (0)
  5. 1 star2% (1)

Reviews summary

Pros
  • : Helps with falling asleep and staying asleep.
  • : Provides uninterrupted sleep throughout the night.
Neutral
  • : Can be affordable, but also steep for certain features.
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Showing 1-3 of 33 reviews

Nov 3, 2025
GorillasBigBrutusChickenM
Sold byHighland Health FoodsDelivered byWalmart
5 out of 5 stars review

Verified Purchase

For sleep and anxiety; aminos always win.

If you have some anxiety and find yourself waking up in the middle of the night a lot, try two of these on an empty stomach 1 hour before bed. I also recommend gaba, or pharma-gaba, taken 2 hours before bed, also empty stomach. Have been taking tryptophan almost every night since 2021, when a bad case of covid fried my circuit board. It took me months to recover from that and I hardly slept for several weeks. I read a lot back then about amino acids and I'm a huge believer in them for mental health. Glycine is also great for sleep. NOW brand is my go to on all three, or natural factors. Stay away from 5-HTP, unless you want serotonin syndrome. Go with L-tryptophan instead. I also recommend taking the Sleep School course (Guy Meadows) for clearing your mind from work stress that may be keeping you up. It was the best $60 I ever spent. Almost 5 years later and I still use the skills for that course.

Helpful?2U5B2H55GKRM41849108
Jul 9, 2024
Sunny
Top Reviewer
Sold byFruitful Yield
5 out of 5 stars review

Verified Purchase

Go to sleep right away

I take two capsules just before turning the light out and turning over and going to sleep pretty much. it has not failed. You know what they say about turkey. 😊

Helpful?2U5B2H55GKRM41849108
Oct 20, 2023
BuckarooDave
5 out of 5 stars review

Seller Verified Purchase

Sound, restful sleep.

I used L-T before it was recalled and now that it is available again, I am using it to get a better nights sleep. I take 2 capsules with 3 Melatonin gummies and I sleep soundly. No sluggish feelings when I wake up.

Review from samsclub.com
Helpful?2U5B2H55GKRM41849108