What is the source of the dextrose used for this tryptophane? Is any part of it sourced or manufctured outside the US?

There is no dextrin in the Pure Encapsulations L-Tryptophan. The l-tryptophan is sourced from the USA and the pyridoxal 5’ phosphate is sourced from China. As with all raw materials, each batch of ingredients received by Pure Encapsulations is tested upon reception for identity, potency (if applicable) and contaminants, which can include heavy metals, residual solvents, allergens, pesticide residues and others depending on ingredient and level of risk. The raw materials are blended and encapsulated in the USA.

Pure Encapsulations - L-Tryptophan contains 6.7 mg of Vitamin B6 and 1000 mg of TryptoPure per 2 capsules.

is this made from GMO corn?

All Pure Encapsulations ingredients, including those derived from corn, are GMO-free.

Is this made by fermentation?

L-Tryptophan is derived from corn dextrose fermentation. The corn dextrose fermentation process starts with isolating dextrose from corn (a sugar, so does not contain allergenic corn protein), which is then fed to micro-organisms. The micro-organisms produce these nutrients, and the nutrients are then isolated and purified away from the starting materials. While no corn proteins or sugar remain in the final product (and Pure has tested with negative results), they do not routinely test for corn allergens and therefore they would not be able to guarantee its safety for someone with a corn allergy. It is generally well tolerated by individuals who are corn sensitive.

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Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation, Serotonin Support, PMS, and Sleep* | 180 Capsules

Product ID: 99455416

Details

Age Range (Description)
Adult
Brand
Pure
Flavor
Unflavored
Item Form
Capsule
Item Weight
0.18 Kilograms
Item dimensions L x W x H
4.25 x 4.17 x

⏳Supports sleep onset & duration

🌿Free from allergens & GMOs

💊180 pure capsules

$258.31

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Description

💤 Unlock your best night’s sleep and wake up winning!

LONG LASTING SUPPLY - 180 capsules offering a 60-day wellness boost for your busy lifestyle
TRUSTED TRANSPARENCY - Manufactured under strict quality controls with verified potency and purity
REST EASY PERFORM BETTER - Clinically-backed L-Tryptophan to enhance sleep quality and duration*
PURE POWER ZERO COMPROMISE - Crafted with premium, allergen-free ingredients—no GMOs, no fillers
CALM YOUR MIND CONTROL CRAVINGS - Promotes relaxation and helps manage occasional cravings for balanced days

Pure Encapsulations L-Tryptophan delivers 180 capsules of high-purity amino acid designed to support restful sleep, relaxation, serotonin balance, and PMS relief. Free from common allergens, artificial additives, and GMOs, this supplement is crafted for adults seeking natural, effective wellness support backed by rigorous quality standards.

Specifications

ASIN	B07H8N948R
ASIN	B07H8N948R
Age Range Description	Adult
Best Sellers Rank	#53,643 in Health & Household ( See Top 100 in Health & Household ) #1,714 in Amino Acid Nutritional Supplements #2,035 in Blended Vitamin & Mineral Supplements
Brand Name	Pure Encapsulations
Color	Red
Container Type	Bottle
Customer Reviews	4.6 4.6 out of 5 stars (166)
Date First Available	February 10, 2017
Dosage Form	Capsule
Flavor	Unflavored
Item Dimensions	4.25 x 4.17 x 3.66 inches
Item Form	Capsule
Item Weight	0.18 Kilograms
Manufacturer	Pure Encapsulations
Manufacturer	Pure Encapsulations
Manufacturer Part Number	B07H8N948R
Material Features	Food Safe
Number of Items	1
Product Benefits	Sleep Support
Product Dimensions	4.25 x 4.17 x 3.66 inches; 6.21 ounces
Special Ingredients	Amino Acid
Specific Uses For Product	Laboratory
Total Servings Per Container	60
Unit Count	180.0 Count

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