Page 1 - Reviews - Thorne, Theanine, 90 Capsules (200 mg per Capsule) - iHerb
Your preference has been updated for this session. To permanently change your account setting, go to My Account
As a reminder, you can update you preferred country or language anytime in My Account
> beauty2 heart-circle sports-fitness food-nutrition herbs-supplements pageview
Click to view our Accessibility Statement
}
Free Shipping over CA$39.00
checkoutarrow
Supplements
Sports
Bath
Beauty
Grocery
Home
Baby
Pets
Brands A-Z
Health Topics
Deals
Best Sellers
BOGO
New
Wellness Hub

Customer Ratings & Reviews

100% authenticOur products are sourced directly from brands or authorized distributors.Show more
4.8
Based on 678 ratings
578
62
27
7
4
Write a Review
What customers say
Customers have expressed high satisfaction with Thorne's L-theanine supplement, praising its quality and effectiveness. Many users reported feeling calmer and more relaxed, especially during stressful times or before bed. Several reviews highlighted improvements in sleep quality and reduced anxiety. The product is often taken in the morning to counteract caffeine jitters, with some noting it helps maintain focus without causing drowsiness. Users appreciate the convenience of the 90-capsule packaging and find it affordable for the benefits received. Despite a few needing more time to see full effects, most agree that consistent use over several months yields positive results. Thorne's reputation for high-quality ingredients and effective supplements is frequently mentioned, making it a trusted choice among customers.
Review highlights
(662)
 
Rating

Rating

Languages
English
Languages
Show auto-translated reviews(375)
Show reviews with images only
Review images
English
Translated reviews
iHerb customer
Posted on Feb 10, 2025
Canada
3
0
0
2
Quality product!
Verified purchase
I have trouble sleeping. My Registered Dietician suggested that I take L-theanine to help me relax so I can sleep better. She wanted me to use a good, quality supplement with the best ingredients and recommended the one she uses. I live in Canada and couldn’t find Thorne there so I searched online and found it on iHerb. I also ordered Thorne magnesium byglycinate and sleep so much better now.
iHerbCustomer
Gold
Posted on Nov 13, 2025
Canada
754
1
6
6
Verified purchase
good good good good good good good good good good good good
iHerb customer
Posted on Sep 25, 2025
Romania
71
67
0
13
High-Quality L-Theanine for Calm Focus
Verified purchase
The quality of this L-theanine supplement is excellent, made with Suntheanine®, a clinically studied and trusted form. The ingredients are clean and simple, with no unnecessary fillers. The capsule size is small and easy to swallow, and the dosage of 200 mg per capsule is convenient for daily use. The benefits are noticeable with calmer focus, reduced stress, and better relaxation without drowsiness. The taste is neutral since the capsules have no flavor. The package size provides a solid supply, making it easy to stay consistent with supplementation.
8fa2b895-9184-4acc-8c44-ff433c849ee2
SassyTofu
Silver
Posted on Nov 19, 2025
Singapore
136
0
0
6
Quality
Verified purchase
I take this on the day I need extra calmness in the morning
LadyGuaGua
Silver
Posted on Apr 12, 2025
Taiwan
166
0
1
86
Calm Focus
Verified purchase
Takes the edge off caffeine without dulling my focus. Perfect for afternoon slumps or pre-workout jitters. Reduces menopause-related anxiety gently. Like meditation in a pill!
iHerbCustomer
Silver
Posted on Nov 4, 2025
Saudi Arabia
146
0
0
5
Sleeping
Verified purchase
I can see the result right now for deep sleep
iHerbCustomer
Silver
Posted on Dec 19, 2025
Hong Kong
200
1
1
13
Keeps me calm
Verified purchase
I have ADHD and this helps an awful lot. I take two tablets today one in the morning one at night.
Ana
Silver
Posted on Aug 12, 2025
Thailand
297
2
0
18
Calm Focus and Relaxation Without Drowsiness
Verified purchase
This theanine from Thorne is high quality and really helps me feel calm and focused at the same time. It’s perfect for reducing stress during the day or winding down in the evening without making me sleepy. Easy-to-swallow capsules and excellent purity from a brand I trust.
iHerbCustomer
Gold
Posted on Jun 29, 2025
Singapore
862
0
0
109
GOOD PACKAGE
Verified purchase
it is sourced from Japan, using the Japanese process (the Japanese are the ones who figured out how to isolate it from green tea). Other companies try to extract it from other materials (not green tea). Also, this bottle has the correct dosage. This is the best quality L-Theanine that I've been able to find. Based on the information on the back of the bottle,
LongevitySpecialist
Posted on Jan 13, 2026
Moldova, Republic of
59
49
2
3
Most respected premium brand
Verified purchase
I take Thorne theanine and magnesium bisglycinate at night. It reduces anxiety and pre-bedtime mental turmoil, helps me fall asleep faster, and improves sleep quality. Thorne is one of the most respected premium American brands in the world of nutritional supplements and vitamins. Many of its products are NSF Certified for Sport (the world's most stringent sports anti-doping certification).
f0368a16-f2fa-43ec-974f-f500bc803800