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NutraBio L-Theanine Supplement, 200mg - May Help Promote and Support Relaxation, 90 Capsules
Key item features
- What is L-Theanine? L-Theanine is a natural phytochemical found in Japanese green tea. L-Theanine is a non-essential amino acid that is present in the brain and is a close relative of Glutamate
- Benefits: L-Theanine may help promote a restful, relaxed state while maintaining daytime alertness
- Suggested Use: Take 1 capsule 1-3 times daily, in divided doses, between meals
- NutraBio Quality: L-Theanine is vegetarian, non-GMO, gluten-free, lactose-free, third-party tested, and manufactured in the USA in a facility that meets FDA 21 CFR Part 111 c-GMP regulations
- Third Party Tested, Full Disclosure: Like all NutraBio products, our L-Theanine supplement is tested by an independent third-party lab to ensure it is both pure and meets strict quality standards. All NutraBio products feature fully transparent labels with no proprietary blends
Specs
- Vitamin & supplement typeMultivitamin Supplements
- Health concernImmune System Support
- Serving size90 servings
- BrandNutraBio
- Product usage frequencyDaily
- FlavorUnflavored
Current price is USD$24.14
Price when purchased online
- Free shipping
Free 30-day returns
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Arrives by Thu, Jun 11
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Sold and shipped by iHerb
4.555178027889856 stars out of 5, based on 14127 seller reviews(4.6)14127 seller reviews
Free 30-day returns
Other sellers
$22.99
+Free shippingShipping, arrives by Fri, Jun 12 to Columbus, 43215
Sold and shipped by NutraBioPro Seller
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About this item
Product details
L-Theanine is a natural phytochemical found in Japanese green tea. L-Theanine is a non-essential amino acid that is present in the brain and is a close relative of Glutamate. Studies indicate that L-Theanine interacts with the neurotransmitter, GABA (Gamma-Aminobutyric Acid). L-Theanine may help promote a restful, relaxed state while maintaining daytime alertness.
- What is L-Theanine? L-Theanine is a natural phytochemical found in Japanese green tea. L-Theanine is a non-essential amino acid that is present in the brain and is a close relative of Glutamate
- Benefits: L-Theanine may help promote a restful, relaxed state while maintaining daytime alertness
- Suggested Use: Take 1 capsule 1-3 times daily, in divided doses, between meals
- NutraBio Quality: L-Theanine is vegetarian, non-GMO, gluten-free, lactose-free, third-party tested, and manufactured in the USA in a facility that meets FDA 21 CFR Part 111 c-GMP regulations
- Third Party Tested, Full Disclosure: Like all NutraBio products, our L-Theanine supplement is tested by an independent third-party lab to ensure it is both pure and meets strict quality standards. All NutraBio products feature fully transparent labels with no proprietary blends
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Brand
NutraBio
Size
3.80
Flavor
Unflavored
Count per pack
1
Indications
Health Concern
Immune System Support
Directions
Instructions
As a dietary supplement, take 1 capsule daily, preferably with a meal, or as directed by your physician.
Dosage
Take 1 capsules 1-3 times daily, in divided soes, between meals.
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Ingredients
Ingredients
Vegetarian capsule (hypromellose,
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Showing 1-3 of 19 reviews
Oct 7, 2025
Castagna
5 out of 5 stars review
L-Theanine
L-Theanine helps me to relax when I go to bed on a hard workout. It eases and relaxes my body. Great stuff.
Incentivized Review
Review from NutraBio
Helpful?2RJRS8KTL5HC659990118
Mar 25, 2026
robert h.
5 out of 5 stars review
Seller Verified Purchase
Great product great pricing and fast shipping
Review from https://nutrabio.com
Helpful?2RJRS8KTL5HC659990118
Apr 22, 2026
Robin M.
5 out of 5 stars review
Seller Verified Purchase
L-theanine is a regular part of my sleep rountine. Love it.
Review from https://nutrabio.com
Helpful?2RJRS8KTL5HC659990118
