Guarana 200 mg

Guarana 200 mg

Natrol4.5 (767 ratings)
Format:Capsule Quantity: 90 Capsule(s) · 90 servings
Goals
$8.99 $0.09 per serving

Product analysis

48 out of 100

Guarana 200 mg is aimed at alertness. Unspecified preparation and caffeine content make its likely effect difficult to judge.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

The guarana preparation is unspecified. Its botanical amount does not establish the identity or strength of a defined extract.

Ingredient Transparency63

The guarana quantity is disclosed, but preparation details are missing. The botanical amount does not establish how much caffeine a serving provides.

Value For Money40

Guarana value cannot be judged reliably from the available information. Without a clearly comparable preparation, the serving cost gives limited guidance.

Customer Satisfaction75

Customer ratings are favorable. The review count provides useful context while giving a less extensive picture than a large review base.

Product Focus70

The formula is concentrated on an alertness-related botanical. Its unspecified preparation and caffeine amount limit confidence in transferable energy or cognitive benefits.

Format
Capsule
Container
90 Capsule(s)
Per serving
$0.09
Customer rating
4.5 · 767 ratings
Report analysis

Goals

Impact
High effect
B Ingredient FitF PathwaysB- EvidenceA+ Formulation Logic

Guarana has an alertness rationale, with limited acute findings for a particular standardized extract. The 200 mg serving receives a contribution in the saved findings, but generic guarana mass does not identify that extract or establish its caffeine content. Those findings cannot establish sustained exercise energy or reliable fatigue relief.

How this product is rated for Energy

Ingredient fit77

Guarana anchors this product’s saved energy connection. The serving only partly reaches the saved amount comparisons; this does not measure how much energy it provides.
Goal fit
Guarana is the focused ingredient in the saved energy findings.
Dose adequacy
The serving only partly reaches the saved amount comparisons; this does not measure how much energy it provides.

Pathways12

The saved findings concentrate on central alertness, without establishing the size of a clinical benefit. That is a narrow connection rather than broad energy coverage.
Depth
The saved findings concentrate on central alertness, without establishing the size of a clinical benefit.
Breadth
No direct energy area reaches the saved coverage threshold; nutritional relevance and routine energy enhancement remain different questions.

Evidence73

Guarana appears in the saved findings, but the supplied population or preparation limits prevent a routine adult energy claim.
Evidence strength
Guarana appears in the saved findings, but the supplied population or preparation limits prevent a routine adult energy claim.
Studied preparation
The preparation qualifies in the saved findings, although population and treatment limits still govern how its effects can be described.

Formulation logic100

No missing partner or specified conflict was identified. The included amounts meet the saved minimum comparisons, without establishing a routine energy benefit.
Partner coverage
The included ingredients do not require a missing partner for the roles described.
Conflicts
No specified ingredient conflict was identified in the supplied findings.
Effective doses
The included ingredients meet the saved minimum amount comparisons; these are not proven fatigue-treatment thresholds.
Study evidence
Guarana No effect 8 studies
Cognitive Support
Impact
High effect
B Ingredient FitD- PathwaysB EvidenceA+ Formulation Logic

Guarana is a possible caffeine source, but its 200 mg botanical amount does not establish caffeine exposure. The supplied scientific context does not support a transferable cognitive benefit for generic guarana. Its presence therefore cannot establish improved alertness, memory or learning.

How this product is rated for Cognitive Support

Ingredient fit77

Guarana is the sole assessed ingredient, but botanical mass does not establish an active caffeine amount.
Goal fit
The assessed ingredients are directed toward cognitive support.
Dose adequacy
Declared amounts receive partial or varied recognition in the saved exposure comparison; this does not establish a proven cognitive dose.

Pathways40

The saved findings assign guarana to alertness, without confirming a caffeine exposure.
Depth
The saved findings assign guarana to alertness, without confirming a caffeine exposure.
Breadth
One cognitive area reaches substantial coverage, leaving the other areas unrepresented or less developed.

Evidence75

Generic guarana findings cannot establish a reliable cognitive effect.
Evidence strength
Generic guarana findings cannot establish a reliable cognitive effect.
Studied preparation
The saved preparation comparison accepts guarana, although generic botanical identity does not establish an equivalent caffeine exposure.

Formulation logic100

The assessed ingredients need no missing partner and meet the saved minimum amount comparison. No configured conflict was identified.
Partner coverage
The assessed ingredients work alone or have their required partner; no missing partner was identified.
Conflicts
No configured ingredient conflict was identified.
Effective doses
The assessed ingredients meet the saved minimum amount comparison, without establishing a proven cognitive benefit.
Study evidence
Guarana Supportive 11 studies

Ingredients

IngredientAmount per servingScore
Guarana 4:1 extract
200 mg 30
Adults 18–50 Dairy Free
Report overview
Guarana · 200 mg OverallScore30
C Composition And Label DisclosureF Composition And Label Disclosure
A serving provides 200 mg of guarana. A 4:1 extract ratio is listed. The caffeine amount from guarana is not stated in mg. The available information does not establish a guarana-specific value comparison.
How this ingredient is rated

Composition and Label Disclosure60

The preparation type is not specified. A 4:1 extract ratio is listed.
Marker and Preparation Disclosure
A 4:1 extract ratio is listed.

Composition and Label Disclosure0

The serving contains 200 mg of guarana. The caffeine amount from guarana is not specified.
Amount and Label Disclosure
The caffeine amount from guarana is not specified.

Commercial Price and Usability

A guarana-specific price comparison is unavailable.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Cognitive effects of guarana supplementation with maximal intensity cycling.
    Gurney T; Bradley N; Izquierdo D; Ronca F · The British journal of nutrition · 2023
    Randomized trial25 participantsCognitive Support forGuarana
  2. Cognitive Performance Enhancement Induced by Caffeine, Carbohydrate and Guarana Mouth Rinsing during Submaximal Exercise.
    Pomportes L; Brisswalter J; Casini L; Hays A; Davranche K · Nutrients · 2018
    Randomized trial24 participantsCognitive Support forGuarana
  3. Improved cognitive performance in human volunteers following administration of guarana (Paullinia cupana) extract: comparison and interaction with Panax ginseng.
    Kennedy DO; Haskell CF; Wesnes KA; Scholey AB · Pharmacology, biochemistry, and behavior · 2005
    Non-randomized trial28 participantsCognitive Support forGuarana
  4. The effect of plant active substances on cognitive function in healthy older adults: a systematic review and network meta-analysis of randomized controlled trials.
    Feng X; Fan S; Wei F · Frontiers in pharmacology · 2026
    Meta-analysis1,861 participants25 studies pooledCognitive Support forGuarana
  5. Effect of Guarana (Paullinia cupana) on Cognitive Performance: A Systematic Review and Meta-Analysis.
    Hack B; Penna EM; Talik T; Chandrashekhar R; Millard-Stafford M · Nutrients · 2023
    Meta-analysis328 participants8 studies pooledCognitive Support forGuarana
  6. Dietary supplements and fatigue in patients with breast cancer: a systematic review.
    Pereira PTVT; Reis AD; Diniz RR; Lima FA; Leite RD; da Silva MCP; Guerra RNM; de Moraes Vieira ÉB; Garcia JBS · Breast cancer research and treatment · 2019
    Systematic review932 participants8 studies pooledEnergy forGuarana
  7. Purified dry extract of Paullinia cupana (guaraná) (PC-18) for chemotherapy-related fatigue in patients with solid tumors: an early discontinuation study.
    del Giglio AB; Cubero Dde I; Lerner TG; Guariento RT; de Azevedo RG; Paiva H; Goldman C; Carelli B; Cruz FM; Schindler F; Pianowski L; de Matos LL; del Giglio A · Journal of dietary supplements · 2014
    Randomized trial40 participantsEnergy forGuarana
  8. Placebo-Controlled, Double-Blind, Randomized Study of a Dry Guarana Extract in Patients with Head and Neck Tumors Undergoing Chemoradiotherapy: Effects on Fatigue and Quality of Life.
    Martins SPDS; Ferreira CL; Del Giglio A · Journal of dietary supplements · 2019
    Randomized trial60 participantsEnergy forGuarana
  9. Effects of Acute Guarana (Paullinia cupana) Ingestion on Mental Performance and Vagal Modulation Compared to a Low Dose of Caffeine.
    Talik TN; Penna EM; Hack BP; Harp A; Millard-Stafford M · Nutrients · 2024
    Randomized trial20 participantsEnergy forGuarana
  10. Effectiveness of guaraná (Paullinia cupana) for postradiation fatigue and depression: results of a pilot double-blind randomized study.
    da Costa Miranda V; Trufelli DC; Santos J; Campos MP; Nobuo M; da Costa Miranda M; Schlinder F; Riechelmann R; del Giglio A · Journal of alternative and complementary medicine (New York, N.Y.) · 2009
    Randomized trial36 participantsEnergy forGuarana