---
product_id: 578954641
title: "FAST:RX Fasting Electrolyte Drink | Zero Sugar Zero Calorie Hydration with Vitamins & Minerals | Intermittent Fasting & Keto | Blueberry Acai | Sparkling | 16oz 12-Pack"
brand: "fast:rx"
price: "KSh29807"
currency: KES
in_stock: true
reviews_count: 8
category: "Fast:Rx"
url: https://www.desertcart.co.ke/products/578954641-fast-rx-fasting-electrolyte-drink-zero-sugar-zero-calorie-hydration
store_origin: KE
region: Kenya
---

# 30mg caffeine boost Zero sugar, zero calories Electrolytes + vitamins + minerals FAST:RX Fasting Electrolyte Drink | Zero Sugar Zero Calorie Hydration with Vitamins & Minerals | Intermittent Fasting & Keto | Blueberry Acai | Sparkling | 16oz 12-Pack

**Brand:** fast:rx
**Price:** KSh29807
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your fast with flavor and focus—hydrate like a pro!

## Quick Answers

- **What is this?** FAST:RX Fasting Electrolyte Drink | Zero Sugar Zero Calorie Hydration with Vitamins & Minerals | Intermittent Fasting & Keto | Blueberry Acai | Sparkling | 16oz 12-Pack by fast:rx
- **How much does it cost?** KSh29807 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/578954641-fast-rx-fasting-electrolyte-drink-zero-sugar-zero-calorie-hydration)

## Best For

- fast:rx enthusiasts

## Why This Product

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

## Key Features

- • **Power-Packed Hydration:** Enhanced with electrolytes, magnesium, green tea, and ginseng for sustained energy.
- • **Stay Sharp & Refreshed:** Formulated to reduce fasting fatigue and brain fog—fast smarter, not harder.
- • **Effortless Fasting Fuel:** Ready-to-drink 16oz can—no mixing, no mess, just open and hydrate.
- • **Fasting-Friendly Formula:** Zero sugar, zero calories, zero carbs—supports autophagy and insulin balance.
- • **Sparkle Through Your Fast:** Blueberry Acai sparkling flavor adds a refreshing twist to your keto and intermittent fasting routine.

## Overview

FAST:RX is a sparkling, zero-calorie electrolyte drink designed specifically for intermittent fasting and keto lifestyles. Each 16oz can delivers 30mg of caffeine, essential electrolytes, vitamins, minerals, green tea, and ginseng to support hydration, mental clarity, and energy without breaking your fast. Perfect for busy professionals seeking a convenient, ready-to-drink boost during fasting windows.

## Description

Two Flavors - Bubbles or Flat! Visit the Store Two Flavors - Bubbles or Flat! Visit the Store

Review: Great product!!! - This is great. Decided to give fasting another try but I was worried about feeling nauseous like I did the last time. Using Fastrx as my base, not only did I not feel nauseous, but I felt normal. This allowed me to fast but carry on with life as usual. Will definitely be buying it again - it tastes really good and I will be trying the other flavors so I can mix and match during my next fast.
Review: Mixed reviews from those that tried it - I shared this with my coworkers. One coworker didn't enjoy the flavor and passed on it. I tried a couple cans and while I didn't really like it the first time, it was better the second time. The flavor is just okay and tastes like fake sugar. It is not really a flavor I like in sparkling water. My other coworker LOVES this and thinks it is great for fasting like the product claims. So, hard to say if I recommend it because it's really not for me but someone else I shared it with liked it.

## Features

- READY TO DRINK FASTING HYDRATION — No mixing, no powder, no measuring. FAST:RX is a full 16oz can of smooth, great-tasting electrolyte hydration made specifically for fasting — just open and drink anytime during your fast window.
- FASTING SAFE — ZERO SUGAR, ZERO CALORIES, ZERO CARBS — FAST:RX will not break your fast, spike insulin, or interfere with autophagy. Safe for intermittent fasting, prolonged fasting, OMAD, keto, and water fasting protocols — drink freely throughout your entire fast window without compromising your results.
- ELECTROLYTES + VITAMINS + MINERALS + GREEN TEA + GINSENG — More than basic sodium and potassium. FAST:RX combines essential electrolytes, magnesium, key vitamins and minerals, green tea, and ginseng to support natural energy, mental focus, and hydration — everything your body needs to get through a fast feeling strong.
- FEEL BETTER WHILE FASTING — Fasting doesn't have to mean feeling drained or foggy. FAST:RX is formulated to help you feel satisfied, refreshed, and focused during your fast — supporting your energy and wellness so you can stay on track with your goals without white-knuckling through hunger and fatigue.
- THE ONLY READY-TO-DRINK CAN BUILT FOR FASTING — While everyone else is mixing powder packets into water, FAST:RX is already in a can and ready when you are. Perfect for your morning fast, workday hydration, gym sessions, keto lifestyle, or anywhere you need clean electrolyte support without the hassle — grab a case and make fasting your superpower.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CKTZP5GR |
| Age Range Description | Adult |
| Best Sellers Rank | #122,660 in Health & Household ( See Top 100 in Health & Household ) #659 in Sports Nutrition Electrolyte Replacement Drinks |
| Brand | FAST:RX |
| Brand Name | FAST:RX |
| Caffeine Content Description | Caffeinated |
| Caffeine Content Per Serving | 30 Milligrams |
| Color | Blueberry Acai |
| Container Type | Can |
| Customer Reviews | 3.9 out of 5 stars 56 Reviews |
| Each Unit Count | 12 |
| Flavor | Sparkling - Blueberry Acai |
| Flavored Drink Type | Carbonated Flavored Drink |
| Item Form | Liquid |
| Item Package Quantity | 12 |
| Item Package Weight | 5.81 Kilograms |
| Item Type Name | Beverage |
| Item Volume | 16 Fluid Ounces |
| Liquid Contents Description | Nutrient Enhanced Water Beverage |
| Manufacturer | GIVN Goods |
| Net Content Volume | 16 Fluid Ounces |
| Number of Items | 12 |
| Number of Pieces | 12 |
| Package Information | Can |
| Package Size Name | 12-Pack |
| Package Type | Custom |
| Package Type Name | Can |
| Product Shelf Life | 365 Days |
| Special Ingredients | De-sugared Lemon Juice, Green Tea Extract, Panax Ginseng, Apple Cider Vinegar, Trace Minerals |
| Specialty | Gluten Free |
| Specific Uses For Product | Hydration |
| Sweetness Description | Not Sweet |
| Tea Variety | Green |
| UPC | 855778006415 |
| Unit Count | 192.00 Fluid Ounces |

## Product Details

- **Brand:** FAST:RX
- **Flavor:** Sparkling - Blueberry Acai
- **Item Form:** Liquid
- **Number of Items:** 12
- **Package Information:** Can

## Images

![FAST:RX Fasting Electrolyte Drink | Zero Sugar Zero Calorie Hydration with Vitamins & Minerals | Intermittent Fasting & Keto | Blueberry Acai | Sparkling | 16oz 12-Pack - Image 1](https://m.media-amazon.com/images/I/71Gm-3oqERL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product!!!
*by M***W on May 14, 2026*

This is great. Decided to give fasting another try but I was worried about feeling nauseous like I did the last time. Using Fastrx as my base, not only did I not feel nauseous, but I felt normal. This allowed me to fast but carry on with life as usual. Will definitely be buying it again - it tastes really good and I will be trying the other flavors so I can mix and match during my next fast.

### ⭐⭐⭐⭐ Mixed reviews from those that tried it
*by A***F on May 4, 2024*

I shared this with my coworkers. One coworker didn't enjoy the flavor and passed on it. I tried a couple cans and while I didn't really like it the first time, it was better the second time. The flavor is just okay and tastes like fake sugar. It is not really a flavor I like in sparkling water. My other coworker LOVES this and thinks it is great for fasting like the product claims. So, hard to say if I recommend it because it's really not for me but someone else I shared it with liked it.

### ⭐ Sweetener is on the really bad list.
*by B***S on July 16, 2025*

I please ask to stop using erythritol as the sweetener. All I see is it can cause stroke all over the news. Kills all the great other ingredients.

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**Shop now:** [https://www.desertcart.co.ke/products/578954641-fast-rx-fasting-electrolyte-drink-zero-sugar-zero-calorie-hydration](https://www.desertcart.co.ke/products/578954641-fast-rx-fasting-electrolyte-drink-zero-sugar-zero-calorie-hydration)

---

*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-06-21*