what is this item tested for? heavy metals? what type of impurities?

Hello, We test for many different heavy metals and potentially dangerous microbes as set fourth by FDA regulations. Hope this helps! -Caroline Double Wood Supplements

What is the difference between l-serine and the phosphatidyl serine, or benefits?

The question is highly technical and should be answered by the manufacture's technical staff or a certified organic chemist.

What agency is the third-party tester?

Hello, We are currently using Colmaric Analyticals for third party testing. Best Regards, -Reese Double Wood Supplements

Are the typical purity levels cited ? Thanks.

I see nothing on the web site guaranteeing purity. It only states that they have "third-party testing". That doesn't mean anything.

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Double Wood Supplements L-Serine Capsules (Third Party Tested) - 2,000mg Servings Used In Clinical Study, 180 Count, 500mg per Capsule (Amino Acid for Serotonin Production and Brain Support)

Product ID: 365755908

Details

Brand
Double Wood
Diet type
Vegan
Flavour
Unflavored
Item dimensions L x W x H
12.2 x 6.9 x
Item form
Capsule
Item weight
5.1 Ounces

🌱Vegan, Non-GMO & Gluten-Free

🧠2000mg clinically studied dose

🇺🇸Made & third-party tested in USA

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Description

🧬 Unlock your brain’s full potential with science-backed L-Serine!

LONG LASTING SUPPLY - 180 capsules provide a full 45-day regimen—stay sharp and ahead without interruption.
CLEAN CONSCIOUS FORMULA - Vegan, Non-GMO, and Gluten-Free—because your brain deserves pure, ethical nutrition.
PREMIUM QUALITY ASSURANCE - Made and rigorously third-party tested in the USA for unmatched safety and potency.
CLINICALLY PROVEN 2 000 MG SERVING - Power your brain with the exact dose used in cutting-edge clinical studies for cognitive support.
SUPPORTS SEROTONIN COGNITIVE HEALTH - Boost serotonin production naturally to enhance mood, memory, and mental clarity.

Double Wood Supplements L-Serine Capsules deliver a potent 2,000mg clinically studied dose per serving to support serotonin production and cognitive function. This vegan, Non-GMO, and gluten-free formula is made and third-party tested in the USA, ensuring premium quality and safety. With 180 capsules per bottle, it offers a convenient 45-day supply designed for professionals seeking enhanced brain health and mental clarity.

Specifications

ASIN	B07RDYCG4H
ASIN	B07RDYCG4H
Age Range Description	Adult
Allergen Information	Gluten Free
Best Sellers Rank	#38,654 in Health ( See Top 100 in Health ) #708 in Amino Acid Nutritional Supplements
Brand Name	Double Wood Supplements
Color	red
Container Type	Bottle
Customer Reviews	4.6 4.6 out of 5 stars (1,469)
Customer reviews	4.6 4.6 out of 5 stars (1,469)
Diet Type	Vegan
Dosage Form	Capsule
Flavor	Unflavored
Item Dimensions	12.2 x 6.9 x 6.9 centimeters
Item Form	Capsule
Item Weight	5.1 Ounces
Manufacturer	Double Wood Supplements
Manufacturer	Double Wood Supplements
Manufacturer Part Number	DWLSE
Manufacturer reference	DWLSE
Material Features	GMO Free, Gluten Free, Vegan
Material Type Free	en_AE
Model Name	L-Serine Capsules Third Party d -
Number of Items	1
Primary Supplement Type	l-Serine
Product Benefits	Brain Health Support
Product Dimensions	12.19 x 6.86 x 6.86 cm; 144.58 g
Special Ingredients	Amino Acid
Specific Uses For Product	Laboratory
Total Servings Per Container	45
UPC	859793007303
Unit Count	180.0 Count

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In stock

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