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Guarana Energizer 900 mg

Source Naturals
4.6
★ ★ ★ ★ ★
(3227 ratings)
Guarana
Product Image
Score97

A powerful, standardized guarana supplement providing a consistent and high-potency energy lift for alertness.

How scoring works
Quantity:60 Tablet(s) • (60 servings)
Goals:
Energy
Cognitive Support

Score 97

A powerful, standardized guarana supplement providing a consistent and high-potency energy lift for alertness.

How scoring works

Also available as

1 option
200 servings Guarana 900 mg • 200 Tablet(s) • 200 servings $28.35 ($0.14 per serving)
$9.09($0.15 per serving)
Pure Formulas
$ 14.88
Amazon
$ 11.14
iHerb
$ 9.09
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Analysis

This product delivers one of the strongest doses of guarana available, standardized to ensure a consistent caffeine yield in every tablet. It is designed for those who need an intensive boost in energy and mental concentration for work or physical tasks. By using a standardized extract, it avoids the variability often found in raw plant powders.

The tablets provide a more reliable and sustained lift than many other energy products. It is an exceptional choice for anyone looking for a powerful, plant-based alternative to coffee or energy drinks.

Pros

  • Standardized for active caffeine
  • Very high 900 mg extract dose
  • Exceptional economic value
  • Supports intense concentration

Cons

  • Stimulant effect can be very strong
  • Tablets may be large
  • Not for caffeine-sensitive users

Warnings

  • High caffeine load
  • May cause jitters or heart racing
  • Take at least 8 hours before bed

Nutrient quality

97 Highest impact

Standardizing the extract to specific caffeine levels ensures a consistent and reliable therapeutic effect for energy. The 900 mg dose is highly potent, providing a significant level of stimulation for acute energy needs.

Ingredient transparency

99 Highest impact

Labeling is exemplary, explicitly stating both the weight of the extract and its caffeine standardization. This level of transparency allows users to manage their stimulant intake with high precision.

Customer satisfaction

94 Highest impact

Consistent 4.59 ratings and a large volume of reviews confirm that the product delivers a powerful and reliable energy boost. It is widely praised for its potency and consistency across the user base.

Value for money

99 Highest impact

Excellent value is provided, as the high-potency and standardized extract are offered at a very competitive price. It represents one of the best values in the market for a verified stimulant dosage.

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Goals

Energy
Impact
Highest effect
A+ Goal FitA+ Strength of SupportB- CoverageA+ Formula Quality

Natural caffeine from guarana seed extract provides acute alertness and supports mental concentration during periods of fatigue. High standardization ensures a consistent delivery of stimulants for immediate energy needs.

This approach offers direct support for wakefulness and physical drive. The ingredients appear well-aligned for those seeking a reliable and natural source of acute stimulation.

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Cognitive Support
Impact
Highest effect
B+ Goal FitA+ Strength of SupportC- CoverageA+ Formula Quality

Guarana seed extract provides a concentrated source of naturally occurring caffeine to support acute mental alertness and temporary cognitive focus. The 900mg dosage is highly potent, offering significant stimulation for periods requiring intense concentration or physical activity.

This formula is a straightforward energy booster that targets the adenosine receptors to reduce the perception of fatigue. Users should be mindful of the total caffeine load, as this high-potency extract provides a substantial stimulant effect.

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Ingredients

IngredientAmount per serving
Guarana Seed Extract (Caffeine)
 900 mg
Adults 18–50 Dairy Free Sugar Free Vegetarian
Report overview
Guarana (Caffeine) · 900 mg OverallScore100
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
This supplement delivers a potent and highly standardized dose of guarana extract for consistent energy support. It offers excellent transparency and value, making it a top choice for those wanting clear labeling and high efficacy.
View ingredientView products
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Guarana Energizer 900 mg

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Guarana 1000 mg

Nutricost
4.7
★★★★★
(206 ratings)
High-dose guarana capsules provide 1000 mg per serving for focused mental energy and alertness. This concentration offers a robust dose in an easy-to-use format, perfect for individuals requiring a high-potency natural stimulant.
Other sellers (0)
85 Value

Energy Boost Delayed-Release

Swanson
4.3
★★★★★
(163 ratings)
Kola nut and guarana extracts are delivered in a delayed-release capsule to support sustained energy levels without a crash. The addition of B12 and adaptogens ensures a more balanced approach to vitality for a similar price.
Other sellers (1)
92 Value

Guarana 1 g

Nutricost
4.7
★★★★★
(249 ratings)
This bulk powder format provides 1000 mg of guarana per gram, allowing for precise and flexible dosing. It is an exceptionally cost-effective option for users who prioritize potency and purity in their energy support.
Other sellers (1)
92 Performance

Energy

NOW
4.5
★★★★★
(1907 ratings)
Guarana and green tea are combined with B-vitamins, Rhodiola, and Ginseng for a comprehensive approach to focus and drive. This multifaceted formula targets multiple pathways of energy production and stress resilience for higher performance.
Other sellers (3)
88 Performance

Nugenix Thermo

Nugenix
4.0
★★★★★
(4385 ratings)
Guarana is integrated into a diverse stimulant matrix including Forskolin, Capsaicinoids, and Chromium. This advanced formula supports metabolic rate and energy expenditure while providing a robust lift to mental alertness.
Other sellers (1)
90 Performance

Guarana 200 mg

Solaray
4.5
★★★★★
(471 ratings)
Dual sources of guarana extract and whole seed powder provide a balanced profile of natural caffeine and cofactors. This combination supports moderate energy maintenance while offering high botanical transparency for daily use.
Other sellers (2)
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