SuppHelper
search
Home›Supplements›Amino Acid›Theanine›Energy + Focus ZHOU
Product Image

Energy + Focus

ZHOU

4.1
★ ★ ★ ★ ★
(234 ratings)
Theanine 200 mg
Caffeine 100 mg
Product Image
Score 92

An excellent and well-balanced L-Theanine and Caffeine blend (2:1 ratio) for smooth energy and enhanced focus, highly regarded for minimizing jitters and crashes.

Quantity: 60 Capsule(s) • (60 servings)
Goals:
flag Mood Support
flag Cognitive Support
flag Sleep Support
flag Energy
flag Stress Relief

leaderboard Score 92

An excellent and well-balanced L-Theanine and Caffeine blend (2:1 ratio) for smooth energy and enhanced focus, highly regarded for minimizing jitters and crashes.

insightsAnalysis

This product features a classic and highly effective nootropic stack: 100mg of natural caffeine (sourced from Coffea arabica and Coffea canephora) and 200mg of L-Theanine. This specific 1:2 caffeine-to-theanine ratio is widely praised by nutritionists and cognitive enhancement communities for its ability to promote a state of 'calm alertness.' The L-Theanine counteracts the harsher stimulant effects of caffeine, smoothing out the energy curve and enhancing focus without anxiety or a subsequent crash. Online reviews consistently highlight its efficacy for sustained energy, improved concentration, and reduced jitters, making it a reliable daily supplement for productivity and mental performance. It excels in its core purpose but does not offer broader benefits like significant metabolism boosting or complex brain health support beyond its primary nootropic effects.
thumb_upPros
  • Optimal 1:2 caffeine to L-Theanine ratio delivers smooth, sustained energy and enhanced focus.
  • Significantly reduces caffeine-related jitters, anxiety, and post-caffeine crash.
  • Utilizes natural caffeine sources, preferred by many users.
  • Good value per serving for a quality C+T blend.
thumb_downCons
  • Caffeine dose (100mg) might be too low for individuals with high caffeine tolerance.
  • Formula is quite simple, lacking additional ingredients for broader cognitive or metabolic support.
  • Not suitable for evening use due to caffeine content interfering with sleep.
warningWarnings
  • Contains caffeine; avoid consumption close to bedtime to prevent sleep disturbances.
  • Individuals sensitive to caffeine should start with a lower dose to assess tolerance.
flagReport analysis
$20.89($0.34 per serving)
iHerb
$ 20.89
Vitacost
$ 20.89
Pure Formulas
$ 20.95
Daily Vita
$ 24.00
flagReport prices

Ingredients

IngredientAmount per serving
L-Theanine
200 mg
natural Caffeine
100 mg
grain_off Gluten Free person Adults 18–50 free_breakfast Dairy Free
flagReport overview

Categories

Theanine 95
The 200mg L-Theanine dose, in a 2:1 ratio to caffeine, is optimal for promoting calm focus, mitigating caffeine's harsher effects, and enhancing cognitive synergy.
Caffeine 85
The 100mg of natural caffeine provides a moderate yet effective energy boost, well-integrated to avoid overstimulation.

Goals

flag Mental Focus 95
The synergistic effect of L-Theanine and caffeine is exceptional for enhancing mental clarity, attention span, and sustained focus without distraction, making it highly effective for cognitive tasks.
flag Energy 90
The 100mg of natural caffeine provides a noticeable energy lift, which is well-sustained and free from harsh peaks and crashes due to the balanced L-Theanine content.
flag Productivity Boost 90
By fostering a state of calm alertness and sustained concentration, the product directly supports improved productivity for work, study, or any mentally demanding activity.
inventory_2Recommended products
90 Value

Pure Energy

Swanson
4.5
★★★★★
(307 ratings)
Offers an L-Theanine and Caffeine blend with the added benefit of Rhodiola at a competitive price per serving, providing enhanced value through its adaptogenic properties for stress and energy.
Other sellers (1)
88 Value

TheanineUP Focused Energy

California Gold Nutrition
4.6
★★★★★
(1862 ratings)
Provides a well-formulated blend of L-Theanine, Caffeine, Matcha, and Cocoa at a lower price per serving, making it an excellent value for those seeking balanced energy and focus with additional compounds.
Other sellers (1)
75 Value

Green Tea Fat Burner

Applied Nutrition
4.1
★★★★★
(6726 ratings)
While not a C+T blend, it delivers 160mg of caffeine with a significant dose of Green Tea extract (EGCG) for metabolism and energy at a very attractive price point, offering good value for its focus on fat burning.
Other sellers (1)
94 Performance

Pure Energy

Swanson
4.5
★★★★★
(307 ratings)
Enhances the L-Theanine and Caffeine blend by adding Rhodiola rosea, an adaptogen known for stress resilience and mental clarity, offering a more comprehensive approach to sustained energy and focus.
Other sellers (1)
93 Performance

TheanineUP Focused Energy

California Gold Nutrition
4.6
★★★★★
(1862 ratings)
Features a unique blend of Matcha, Cocoa, Caffeine, and L-Theanine, which provides a nuanced and smooth energy profile, potentially offering a different, equally effective cognitive experience.
Other sellers (1)
90 Performance

Sports Energy Extreme

NOW Sports
4.5
★★★★★
(1884 ratings)
A highly comprehensive formula including various B vitamins, amino acids, and herbal extracts alongside caffeine, providing a broader spectrum of benefits for energy, focus, and physical performance beyond just the C+T synergy.
Other sellers (3)
70 Budget

Caffeine 200 mg

ALLMAX
4.7
★★★★★
(14214 ratings)
Significantly cheaper per serving, this offers a pure 200mg caffeine dose for energy, though it lacks the L-Theanine for smooth effects.
Other sellers (3)
68 Budget

High Caffeine 200 mg

Natrol
4.7
★★★★★
(587 ratings)
Provides a straightforward 200mg of caffeine at a very low cost, making it a simple and economical choice for a direct stimulant effect without other synergistic compounds.
Other sellers (0)
60 Budget

Energy

Bayer One A Day
4.7
★★★★★
(125 ratings)
A multivitamin offering a moderate 90mg caffeine dose at a considerably lower price per serving, providing basic energy support alongside general nutritional benefits.
Other sellers (1)
90 Value

Pure Energy

Swanson
4.5
★★★★★
(307 ratings)
Offers an L-Theanine and Caffeine blend with the added benefit of Rhodiola at a competitive price per serving, providing enhanced value through its adaptogenic properties for stress and energy.
Other sellers (1)
88 Value

TheanineUP Focused Energy

California Gold Nutrition
4.6
★★★★★
(1862 ratings)
Provides a well-formulated blend of L-Theanine, Caffeine, Matcha, and Cocoa at a lower price per serving, making it an excellent value for those seeking balanced energy and focus with additional compounds.
Other sellers (1)
75 Value

Green Tea Fat Burner

Applied Nutrition
4.1
★★★★★
(6726 ratings)
While not a C+T blend, it delivers 160mg of caffeine with a significant dose of Green Tea extract (EGCG) for metabolism and energy at a very attractive price point, offering good value for its focus on fat burning.
Other sellers (1)
94 Performance

Pure Energy

Swanson
4.5
★★★★★
(307 ratings)
Enhances the L-Theanine and Caffeine blend by adding Rhodiola rosea, an adaptogen known for stress resilience and mental clarity, offering a more comprehensive approach to sustained energy and focus.
Other sellers (1)
93 Performance

TheanineUP Focused Energy

California Gold Nutrition
4.6
★★★★★
(1862 ratings)
Features a unique blend of Matcha, Cocoa, Caffeine, and L-Theanine, which provides a nuanced and smooth energy profile, potentially offering a different, equally effective cognitive experience.
Other sellers (1)
90 Performance

Sports Energy Extreme

NOW Sports
4.5
★★★★★
(1884 ratings)
A highly comprehensive formula including various B vitamins, amino acids, and herbal extracts alongside caffeine, providing a broader spectrum of benefits for energy, focus, and physical performance beyond just the C+T synergy.
Other sellers (3)
flagReport alternatives

SuppHelper

Compare supplements smarter. Science-backed, user-rated, updated daily.

© 2025 SuppHelper. All rights reserved.

Explore

  • Compare Supplements
  • Health Goals
  • Stacks

Legal

  • Privacy Policy
  • Terms of Use
  • Medical Disclaimer

Stay in the Loop