---
product_id: 608649222
title: "Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 18 Servings (Kiwi Strawberry)"
brand: "efx sports"
price: "¥18277"
currency: JPY
in_stock: true
category: "Efx Sports"
url: https://www.desertcart.jp/products/608649222-karbolyn-fuel-fast-absorbing-carbohydrate-powder-carb-load-sustained-energy
store_origin: JP
region: Japan
---

# Sustained energy without crash Fast absorption in bloodstream 3X quality tested & Informed Sport certified Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 18 Servings (Kiwi Strawberry)

**Brand:** efx sports
**Price:** ¥18277
**Availability:** ✅ In Stock

## Summary

> ⚡ Fuel your grind with Karbolyn — energy that lasts, no compromises.

## Quick Answers

- **What is this?** Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 18 Servings (Kiwi Strawberry) by efx sports
- **How much does it cost?** ¥18277 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/608649222-karbolyn-fuel-fast-absorbing-carbohydrate-powder-carb-load-sustained-energy)

## Best For

- efx sports enthusiasts

## Why This Product

- Trusted efx sports brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Energy Ignition:** Clinically proven Karbolyn fuels muscles faster than dextrose for instant power ⚡
- • **Vegan & Clean Formula:** 100% sugar-free, gluten-free, stimulant-free, and vegan-friendly for mindful athletes 🌱
- • **Pure & Trusted Quality:** Manufactured in-house with triple quality checks and banned-substance free certification 🧪
- • **Versatile Performance Fuel:** Perfect pre, intra, or post-workout to maximize training intensity and speed recovery 🔄
- • **Endurance Without the Crash:** Unique carb blend delivers smooth, sustained energy—no bloating, no sugar crash ⏳

## Overview

EFX Sports Karbolyn Fuel is a fast-absorbing carbohydrate powder clinically proven to deliver rapid and sustained energy without the typical sugar crash. Sourced from potato, rice, and corn, this stimulant-free, gluten-free, and vegan-friendly formula supports peak athletic performance and faster recovery. Manufactured in-house with rigorous triple quality testing and Informed Sport certification, Karbolyn guarantees purity and potency in every serving.

## Description

Performance Carb. Energy. Endurance. Recovery. Gluten Free. What Is This "Performance Carbohydrate" Karbolyn? Karbolyn represents the dawn of a new era of carbohydrate supplementation. Derived from potato, rice and corn, this fast-acting, long-lasting, high-performance compound offers the best of both simple and complex carbohydrates. Simple carbohydrates have the ability to enter the bloodstream quickly. However, they can also stimulate a strong "spike" and subsequent "crash" due to a rapid rise and fall of insulin levels. This may be good for a quick burst of energy but not for sustained endurance. Complex carbohydrates do provide sustained endurance. But, they are slow to digest, and can leave you feeling bloated and lethargic. Karbolyn Delivers The Best Of Both Worlds: Karbolyn is absorbed into the bloodstream like a simple sugar but without the typical crash caused when your muscles run out of fuel. It has also been shown to be absorbed as quickly as pure Dextrose (a simple carbohydrate). Yet, it still provides sustained energy without "crashing". Don't Take Our Word For It... What Does The Study Say? The Clinical Study sought to document whether or not Karbolyn has a positive and sustainable impact on blood sugar levels in normal adults during aerobic activity. Data Obtained from Participants Indicated that a simple sugar promoted a steep drop and subsequent "crash" at a predictable point in time. Karbolyn gave an overall smoother decline in blood glucose level.

## Features

- FAST-ACTING FUEL: Karbolyn is a clinically studied (with peer-reviewed, published research) carbohydrate supplement powder sourced from potato, rice, and corn. It’s specifically designed for elite athletes looking for a fast, safe, and effective way to quickly and easily load their muscles with lasting energy and promote faster recovery.
- PEAK PERFORMANCE: Karbolyn enters the bloodstream like a simple sugar, yet it still provides sustained energy without the crash. It's absorbed faster than dextrose, simple sugar, bread, rice, and other carbohydrate products. Enjoy pre, intra, or post training to maximize and maintain high-intensity training, power output, and increase muscle fullness & pumps.
- ALL CARBS AREN'T CREATED EQUAL: Unlike simple carbs that tend to cause a spike and crash or complex carbs that are slow to digest, leaving you feeling bloated and lethargic, Karbolyn combines the best of both by providing you with fast absorption and sustained energy without the bloating or crash. Plus, Karbolyn is 100% sugar-free, gluten-free, stimulant-free, and vegan-friendly.
- MANUFACTURED IN-HOUSE: EFX Sports is part of a very small, elite group of brands who actually make their own products. That’s why we guarantee Karbolyn always meets label claims and is 100% banned-substance free (certified by Informed Sport). With Karbolyn, you'll know you have a pure and potent carbohydrate product.
- 3X QUALITY TESTING: At EFX Sports, we proudly own every phase of the manufacturing process to ensure what's on the label is what's in the bottle...without question. In fact, every EFX Sports product must pass 3 critical quality checkpoints—before, during and after production.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B019STF652 |
| ASIN  | B019STF652 |
| Age Range Description | Adult |
| Best Sellers Rank | #12,397 in Health ( See Top 100 in Health ) #86 in Endurance & Energy Consumables |
| Brand Name | EFX Sports |
| Color | Neutral - 2 Lb |
| Container Type | Bottle |
| Customer Reviews | 4.4 4.4 out of 5 stars (88) |
| Customer reviews | 4.4 4.4 out of 5 stars (88) |
| Diet Type | Gluten Free |
| Dosage Form | Powder |
| Flavor | Kiwi Strawberry |
| Global Trade Identification Number | 00737190002681 |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions | 12.4 x 12.4 x 19.4 centimeters |
| Item Form | Powder |
| Item Weight | 1 Kilograms |
| Item model number  | 737190002681 |
| Manufacturer | EFX Sports |
| Manufacturer  | EFX Sports |
| Manufacturer Part Number | AAP113CK-1 |
| Material Features | Gluten Free |
| Model Name | Sports Karbolyn Fuel |
| Model Number | 737190002681 |
| Number of Items | 1 |
| Primary Supplement Type | Karbolyn |
| Product Benefits | Endurance |
| Product Dimensions  | 12.37 x 12.37 x 19.35 cm; 1 kg |
| Special Ingredients | Gluten Free |
| Total Servings Per Container | 18 |
| UPC | 737190002681 |

## Product Details

- **Age range (description):** Adult
- **Brand:** EFX Sports
- **Diet type:** Gluten Free
- **Flavour:** Kiwi Strawberry
- **Item dimensions L x W x H:** 12.4 x 12.4 x 19.4 centimeters
- **Item form:** Powder
- **Item weight:** 1 Kilograms
- **Primary supplement type:** Karbolyn
- **Product benefits:** Endurance
- **Special ingredients:** Gluten Free

## Images

![Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 18 Servings (Kiwi Strawberry) - Image 1](https://m.media-amazon.com/images/I/71OmtyH+inL.jpg)

## Available Options

This product comes in different **Size, Flavor** options.

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- EFX Sports Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 18 Servings (Kiwi Strawberry)
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-11*