Life Extension, L-Theanine, 60 Vegetarian Capsules (100 mg per Capsule)

Name: Life Extension, L-Theanine, 60 Vegetarian Capsules (100 mg per Capsule)
Brand: Life Extension
SKU: LEX-16836
Price: 16.2 USD
Availability: InStock
Rating: 4.8 (2558 reviews)

Life Extension, L-Theanine, 60 Vegetarian Capsules (100 mg per Capsule) — product photo 1

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Scored for

Outcome alternatives

Life Extension60 count • 30 servingsAvailable now$16.20$0.54 / serving4.8 · 2,558 ratings

83−7 pts from leader

#48 of 784 ranked for calmness or relaxationLeader · Force Factor, Force Factor, Somnapure®, Drug-Free Sleep Aid, 60 Tablets — 90

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Why this ranks #48 for calmness or relaxation

Evidence fitL-Theanine is the strongest evidence signal for this outcome.
Dose fitL-Theanine at 200 mg lands inside the studied 100-400 mg window.
Price / serving$0.54 per serving — high price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustStrong trust signals — consistently high marks from verified buyer ratings.

The numbers · Calmness or relaxation

200 mgIn rangeinside the studied 100-400 mg window

Retailer links may be affiliate links. Rankings and placement are not paid placement.

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Check fit and safety

DoseRank is not medical advice. Review pregnancy, breastfeeding, medication interactions, allergies, and health-condition concerns with a qualified clinician before using this supplement. Stop use and report concerning adverse events to a clinician, the product maker, or the retailer.

Market trends

Price history · last 10 crawls

$18.00+0% vs avg

Jul 24Aug 5

Rating history

Rating quality and social-proof history · last 10 crawls

4.80 / 5+0% vs avg

Jul 24Aug 5

2,558+15% vs avg

Jul 24Aug 5

By outcome

vs overall leader for each ranked outcome — open any outcome to see its ranked alternatives.

6 outcomes

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Calmness or relaxationScoring−7 pts from leader

Product 83Leader 90

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Sleep quality−15 pts from leader

Product 76Leader 91

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Anxiety symptoms−14 pts from leader

Product 75Leader 89

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Attention and concentration−16 pts from leader

Product 67Leader 83

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Blood pressure−45 pts from leader

Product 40Leader 85

Showing the top 5 of 6 ranked outcomes.

What buyers report

Review Intelligence

4.8/ 5.0 · 2,558 reviews

Neutral read

“Customers generally praise Life Extension L-Theanine for its high quality, effective relaxation, and mood enhancement properties. Many appreciate the small size of the capsules, making them easy to swallow, and note that the 100 mg dosage provides a noticeable calming effect without drowsiness or cognitive impairment. The product is often highlighted for its natural ingredients and lack of taste, with some users mentioning it works well in conjunction with caffeine or other supplements. While several customers report significant benefits such as improved sleep and reduced stress, a few have not noticed immediate effects and suggest it may take more time to see results. The brand's reputation for quality and reliable packaging is frequently mentioned, along with timely delivery. Overall, the product receives strong recommendations from users who find it beneficial for relaxation and overall well-being.”

Highlights

Small size

Calming effects

Relaxation aid

Effective brand

Helps focus

Muscle building

Boosts energy

Relaxed

Observations

On time delivery

Concerns

Not strong