---
product_id: 47450600
title: "ULTRA KARBS"
brand: "sirenlabs"
price: "€ 108.49"
currency: EUR
in_stock: true
category: "Sirenlabs"
url: https://www.desertcart.pt/products/47450600-ultra-karbs
store_origin: PT
region: Portugal
---

# Fast glycogen replenishment Clean, stimulant-free muscle fuel High absorption nutrient transport ULTRA KARBS

**Brand:** sirenlabs
**Price:** € 108.49
**Availability:** ✅ In Stock

## Summary

> ⚡ Fuel your gains faster, recover smarter, and own every workout.

## Quick Answers

- **What is this?** ULTRA KARBS by sirenlabs
- **How much does it cost?** € 108.49 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/47450600-ultra-karbs)

## Best For

- sirenlabs enthusiasts

## Why This Product

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

## Key Features

- • **Clean Energy Formula:** No caffeine, creatine, or stimulants—pure focus on muscle recovery and growth.
- • **Optimize Every Workout:** Precisely formulated to sustain energy and accelerate post-exercise recovery.
- • **Elite Athlete’s Choice:** Trusted by serious trainers for efficient glycogen restoration and muscle building.
- • **Rapid Carb Loading Power:** KarboLyn patented blend fuels muscles instantly for peak performance.
- • **Supercharged Nutrient Delivery:** Waxy Maize bypasses the stomach for ultra-fast absorption and energy uptake.

## Overview

Siren Labs Ultra Karbs is a premium carbohydrate blend featuring patented KarboLyn and Waxy Maize designed for rapid glycogen replenishment and superior nutrient absorption. This stimulant-free mass gainer supports sustained energy, faster recovery, and optimized muscle growth, making it an essential post-workout supplement for serious athletes and fitness enthusiasts.

## Description

Buy Siren Labs Ultra Karbs Mass Gainer Post Workout Muscle Builder Healthy Carb Loading - Carbohydrate Blend with KarboLyn - More Energy, Faster Recovery - Weight Gainer for Men (40 Servings) | Carbohydrate Blend with KarboLyn, Healthy Carb Loading, More Energy, Faster Recovery, Muscle Builder, Weight Gainer for Men on desertcart.com ✓ FREE SHIPPING on qualified orders

## Features

- Elite Carbo-Loading Agent: KarboLyn is a patented carbohydrate found in Ultra Karbs that is specifically designed for the serious athlete looking for a fast, easy, convenient and safe way to load the muscle with readily accessible muscle energy (glycogen).
- Nutrient Super Transporter: With a high molecular weight and low osmolarity, meaning it bypasses the stomach and is absorbed by the intestines for immediate assimilation, Waxy Maize acts as a 'super transporter' helping to shuttle nutrients into the body at a higher absorption rate.
- Premium Quality: Containing no stimulants, creatine or caffeine, Ultra Karbs is for the serious athlete, and it's an essential part of any physical conditioning program.
- Supports Workout Results: Ultra Karbs' precise formulation allows you to carbo-load quickly before workouts for maximum performance, helps to maintain energy levels for a long duration of time, and optimizes your recovery afterwards. Combine with a pre-workout supplement for even greater and more enhanced results.
- Your Cutting Edge: With its ability to quickly restore glycogen in the muscle during and after training, Ultra Karbs is an ideal solution to help accelerate and optimize your recovery.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00X4Z6AES |
| ASIN  | B00X4Z6AES |
| Age Range Description | Adult |
| Best Sellers Rank | #172,187 in Health & Household ( See Top 100 in Health & Household ) #66 in Sports Nutrition Weight Gainers |
| Brand Name | SIRENLABS |
| Color | Natural |
| Container Type | Box |
| Customer Reviews | 4.7 4.7 out of 5 stars (59) |
| Date First Available  | July 30, 2015 |
| Department  | GNC|ALL|ALL|NUTRITIONAL SUPPLEMENTS |
| Dosage Form | Powder |
| Flavor | Natural Unflavored |
| Item Dimensions | 9.1 x 5.6 x 5.6 inches |
| Item Form | Powder |
| Item Weight | 998 g |
| Item model number  | 502700 |
| Manufacturer | Siren labs |
| Manufacturer  | Siren labs |
| Manufacturer Part Number | 502700 |
| Material Features | Vegetarian |
| Model Number | 502700 |
| Number of Items | 1 |
| Product Benefits | Energy Management |
| Product Dimensions  | 9.1 x 5.6 x 5.6 inches; 2.2 pounds |
| Special Ingredients | KarboLyn Ultra Premium Carb Blend |
| Total Servings Per Container | 40 |
| UPC | 811020908845 |
| Unit Count | 35.27 Ounce |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** SIRENLABS
- **Flavor:** Natural Unflavored
- **Item Form:** Powder
- **Item Weight:** 998 g
- **Item dimensions L x W x H:** 9.1 x 5.6 x 5.6 inches
- **Package Information:** Box
- **Product Benefits:** Energy Management
- **Special Ingredients:** KarboLyn Ultra Premium Carb Blend
- **Unit Count:** 35.27 Ounce

## Images

![ULTRA KARBS - Image 1](https://m.media-amazon.com/images/I/71qCVRye7pL.jpg)

## Frequently Bought Together

- Siren Labs Ultra Karbs Mass Gainer Post Workout Muscle Builder Healthy Carb Loading - Carbohydrate Blend with KarboLyn - More Energy, Faster Recovery - Weight Gainer for Men (40 Servings)
- PMD Sports CG5 Premium Creatine & L Glutamine Powder, Power Recovery, Build Lean Muscle, Increase Workout Performance, Maximum Strength Pre Workout & Post Workout, Unflavored, 60 Servings
- PMD Sports Ultra Pump Fuel Insanity - Pre Workout Drink Mix for Energy, Strength, Endurance, Recovery - Complex Carbohydrates and Amino Energy - Cherry Bombsicle (30 Servings)

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**Shop now:** [https://www.desertcart.pt/products/47450600-ultra-karbs](https://www.desertcart.pt/products/47450600-ultra-karbs)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-10*