🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 8% of ingredients have research evidence
B Label Compliance Grade

Product Label

📸

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Label Data

31 Gram(s) Serving Size
35 Servings
Other Combinations Product Type
8% Evidence Coverage

Supplement Facts — Evidence Check

Calories
110 {Calories}
Total Fat
Total Carbohydrates
20 Gram(s) (7% DV)
Protein
5 Gram(s) (10% DV)
Vitamin A
2500 IU (50% DV)
Vitamin C
60 mg (100% DV)
30 IU (100% DV)
✅ 1.3× RDA — within safe limits 📚 177 studies (Tier A: 3, B: 90)
RDA 15mg This product: 20.1mg UL 1000mg
Sodium
110 mg (5% DV)
Potassium
30 mg (1% DV)
Defense Complex
125 mg
Endurance Blend
22.4 Gram(s)
Recovery Matrix
5 Gram(s)

Other Ingredients

Natural Flavors Salt Potassium Chloride Soy Lecithin

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (76% of products) Nutrient (58% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

DIRECTIONS: Mix 1 scoop (31 g) with 20 oz. of cold water. For best results, use a shaker cup to thoroughly dissolve the powder. For more flavor, use 16 oz. water. Use before, during and after exercise.

⚠️ Warnings & Precautions

WARNING: Do not use if pregnant or nursing. Consult a health care professional before use if you are taking any medication or have any medical condition.

Not recommended for use by individuals under the age of 18 without parental permission. KEEP OUT OF REACH OF CHILDREN.

🧪 Formulation Notes

Twinlab Endurance Fuel is a caffeine-free serious multi-stage formula that anticipates the body’s needs for pre, during and post-race nutrition to sustain optimal performance, enhance endurance and speed recovery.

ENDURANCE Stage 2 Endurance Blend:Beta-alanine supports muscular endurance, power and output; a powerhouse carb blend releases energy faster (waxy maize, glucose), sustains it (maltodextrin), and acts as an energy reservoir to help you finish strong (isomaltulose). Electrolyte blend aids proper hydration and helps you overcome heat stress.*

RECOVERY Stage 3 Recovery Matrix: Time-released whey and casein proteins, at a 4:1 carb-to-protein ratio, help prepare muscles for faster recovery even during activity.*

POWERED BY BETA-ALANINE THE ENDURANCE INGREDIENT

No Artificial Colors No Artificial Flavors

Caffeine Free

Clinical studies indicate that beta-alanine raises the anaerobic threshold in endurance athletes without any weight gain and assists power athletes to delay fatigue.* Endurance Fuel combines beta-alanine with a host of other clinically-tested nutrients to enable extended performance and greater output.

Additional Information

THE SCIENCE BEHIND THE SPEED

BEST IF USED BY DATE SHOWN ON BOTTLE.

STORE IN A COOL, DRY PLACE.

[Ultimate Pre, During, & Post Race Nutrition]

Natural Flavors and Sweeteners

4:1 CARB-TO-PROTEIN RATIO

> STAMINA* <

Clinically Tested Ingredients

facebook.com/twinlabfuel

{QR code} Scan this QR code with your Smartphone to visit our site.

2022717

DEFENSE Stage 1 Defense Complex: Fusion of antioxidants combine to protect muscles during exercise.*

Product Details

UPC / SKU 0 27434 03182 0
DSLD Entry Date 2015-03-25
Product Type Other Combinations
Form Powder
Brand Twinlab
DSLD ID 43976
Data Updated 2026-04-11

Research Evidence

337 Research Sources
54 Avg Quality Score
161 Meta Analysis
68 Systematic Review
51 Rct
48 Clinical Trial
2 Other
2 Regulatory Source
1 Narrative Review
1 Cochrane Review
1 Guideline
1 Openfda Safety
A Vitamin A supplementation for preventing morbidity and mortality in children from six months to five years of age
Meta Analysis The Cochrane database of systematic reviews 2017
A Vitamin A supplementation for the prevention of morbidity and mortality in infants six months of age or less
Meta Analysis The Cochrane database of systematic reviews 2011
A Vitamin A supplementation for reducing the risk of mother-to-child transmission of HIV infection
Meta Analysis The Cochrane database of systematic reviews 2011
A Vitamin A supplements for preventing mortality, illness, and blindness in children aged under 5: systematic review and meta-analysis
Meta Analysis BMJ (Clinical research ed.) 2011
A Fortification of staple foods with vitamin A for vitamin A deficiency
Systematic Review The Cochrane database of systematic reviews 2019
A Vitamin A supplementation for the prevention of morbidity and mortality in infants one to six months of age
Narrative Review The Cochrane database of systematic reviews 2016
A Vitamin A and fish oils for preventing the progression of retinitis pigmentosa
Meta Analysis The Cochrane database of systematic reviews 2020
A Exercise training-induced changes in exerkine concentrations may be relevant to the metabolic control of type 2 diabetes mellitus patients: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Journal of sport and health science 2023
A Food fortification with multiple micronutrients: impact on health outcomes in general population
Meta Analysis The Cochrane database of systematic reviews 2019
A Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years of age
Meta Analysis The Cochrane database of systematic reviews 2024
View all evidence for Vitamin A →

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