---
product_id: 6543422
title: "Fast-Max DM Max Cough & Chest Congestion Medicine, 6 FL OZ"
brand: "mucinex"
price: "¥4803"
currency: JPY
in_stock: true
reviews_count: 8
category: "Mucinex"
url: https://www.desertcart.jp/products/6543422-fast-max-dm-max-cough-and-chest-congestion-medicine-6
store_origin: JP
region: Japan
---

# 4-Hour Dosing Power Fast Acting Relief Max Strength Formula Fast-Max DM Max Cough & Chest Congestion Medicine, 6 FL OZ

**Brand:** mucinex
**Price:** ¥4803
**Availability:** ✅ In Stock

## Summary

> 💥 Conquer cough & congestion fast — don’t let cold symptoms hold you back!

## Quick Answers

- **What is this?** Fast-Max DM Max Cough & Chest Congestion Medicine, 6 FL OZ by mucinex
- **How much does it cost?** ¥4803 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/6543422-fast-max-dm-max-cough-and-chest-congestion-medicine-6)

## Best For

- mucinex enthusiasts

## Why This Product

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

## Key Features

- • **Non-Drowsy Formula:** Stay sharp and alert—relief without the unwanted fatigue or grogginess.
- • **Rapid Symptom Control:** Experience fast-acting relief that gets you back to your day without missing a beat.
- • **Trusted & Highly Rated:** Join thousands of satisfied users with a 4.7-star rating and proven effectiveness.
- • **Dual-Action Cough Suppressant:** Calms persistent coughs while breaking up chest congestion for all-around comfort.
- • **Maximum Strength Mucus Busting:** Powerful expectorant formula thins and loosens mucus for clear, easy breathing.

## Overview

Mucinex Fast-Max DM Max is a maximum strength liquid medicine designed for adults and teens 12+. It combines 20 mg of Dextromethorphan HBr cough suppressant with 400 mg of Guaifenesin expectorant in an extended-release formula that provides up to 4 hours of relief from cough and chest congestion. This non-drowsy, apple-flavored solution is clinically formulated to thin mucus, calm coughs, and help you breathe easier, making it a top choice for multi-symptom cold relief.

## Description

A cold never takes it easy on you. So why deal with your next cold with kid gloves? Let Maximum Strength Mucinex Fast-Max DM Max go to battle with that nasty cough and chest congestion. Maximum Strength Mucinex Fast-Max DM Max combines maximum strength mucus busting power with a maximum strength cough suppressant to calm that annoying cough and break up chest congestion.

Review: Love this! - Absolutely love this medicine. Perfect for those who are having throat pain but don’t have access to doctor immediately. Helps with immediate relief. Does not make you drowsy or tired. Not a bad taste either.
Review: Good product - Buy this often. I have alot of mucus buildup. This works good for me getting it out.

## Features

- Fast Acting, Max Strength, Multi-symptom Relief
- Controls Cough
- Thins & loosens mucus
- Relieves Chest Congestion
- 4 hour dosing, Try Mucinex DM Caplet for 12 hour Relief

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0057UUGSO |
| Active Ingredients | Dextromethorphan HBr (20 mg), Guaifenesin (400 mg). |
| Additional Features | Maximum Strength |
| Age Range Description | Adult |
| Best Sellers Rank | #4,432 in Health & Household ( See Top 100 in Health & Household ) #28 in Cold & Flu Medicine #1,104 in Sales & Deals |
| Brand | Mucinex |
| Brand Name | Mucinex |
| Container Type | Bottle |
| Customer Reviews | 4.7 out of 5 stars 7,362 Reviews |
| Dosage Form | Liquid |
| Flavor | Apple |
| Global Trade Identification Number | 00363824018669 |
| Item Dimensions | 1.44 x 2.51 x 5.77 inches |
| Item Form | Liquid |
| Item Highlight | Dextromethorphan HBr Cough Suppressant, Guaifenesin Expectorant, Extended-Release Formula, For Ages 12+ |
| Item Weight | 8.16 ounces |
| Item dimensions L x W x H | 1.44 x 2.51 x 5.77 inches |
| Manufacturer | Reckitt Benckiser |
| Manufacturer Part Number | 6382401866 |
| Model Name | Mucinex Fast Max Strength Congestion Liquid |
| Model Number | 6382401866 |
| Net Content Count | 1 bottle |
| Number of Items | 1 |
| Package Type Name | Bottle |
| Product Benefits | Cough Relief |
| Specific Uses For Product | Chest Congestion, Cough |
| Target Audience | Unisex-Adults |
| Target Use Body Part | Whole Body |
| UPC | 363824018669 |
| Unit Count | 6 Fluid Ounces |

## Product Details

- **Brand:** Mucinex
- **Item Weight:** 8.16 ounces
- **Item dimensions L x W x H:** 1.44 x 2.51 x 5.77 inches
- **Product Benefits:** Cough Relief
- **Specific Uses For Product:** Chest Congestion, Cough

## Images

![Fast-Max DM Max Cough & Chest Congestion Medicine, 6 FL OZ - Image 1](https://m.media-amazon.com/images/I/71TI0l6v6pL.jpg)
![Fast-Max DM Max Cough & Chest Congestion Medicine, 6 FL OZ - Image 2](https://m.media-amazon.com/images/I/711KseKVQmL.jpg)
![Fast-Max DM Max Cough & Chest Congestion Medicine, 6 FL OZ - Image 3](https://m.media-amazon.com/images/I/713RFKAPOPL.jpg)
![Fast-Max DM Max Cough & Chest Congestion Medicine, 6 FL OZ - Image 4](https://m.media-amazon.com/images/I/91FbMIBwkPL.jpg)
![Fast-Max DM Max Cough & Chest Congestion Medicine, 6 FL OZ - Image 5](https://m.media-amazon.com/images/I/815TD2EgGAL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this non-drowsy?**
A: Hi, while there are no labeled side-effects for dextromethorphan some consumers may experience drowsiness.  We suggest speaking with your healthcare provider if you have any additional questions regarding side-effects.

**Q: What is the sugar content?**
A: Thank you for your interest in our Mucinex® Fast-Max® DM Max and Mucinex® Nightshift Cold & Flu Liquid Combo Pack. Both medicines are sweetened with sucralose and are therefore sugar free.

**Q: What flavor is this?  Is it any better than any other cough syrup?**
A: Cherry. Yes

**Q: Where is this made**
A: Thank you for your interest in our Mucinex® Fast-Max® DM Max and Mucinex® Nightshift Cold & Flu combo pack! These products are made in England.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love this!
*by E***L on August 17, 2026*

Absolutely love this medicine. Perfect for those who are having throat pain but don’t have access to doctor immediately. Helps with immediate relief. Does not make you drowsy or tired. Not a bad taste either.

### ⭐⭐⭐⭐⭐ Good product
*by K***R on August 8, 2026*

Buy this often. I have alot of mucus buildup. This works good for me getting it out.

### ⭐⭐⭐⭐⭐ A miracle
*by L***. on July 22, 2026*

Mandatory for medical condition HARD too get. Appreciate delivery service. It can take about three days but some relief after first dose.

## Frequently Bought Together

- Mucinex DM Max Liquid Cough & Cold Medicine for Adults, Cold and Flu Medicine for Excess Mucus Relief, Guaifenesin & Dextromethorphan Expectorant & Decongestant for Adults, Dr Recommended, 6.0 Fl Oz
- Mucinex Instasoothe Sugar Free Cough Drops, Cough Medicine for Adults with Dextromethorphan HBr, Non Menthol Cough Drops, Cough Suppressant Lozenges, Mixed Berry Medicated Cough Drops, 40ct
- Mucinex Fast-Max Severe Congestion & Cough Medicine, Maximum Strength Symptom Relief, Over-The-Counter Medication, Cold Medicine, Cough Suppressant, Expectorant, Nasal Decongestant, FSA/HSA, 6 FL OZ

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**Shop now:** [https://www.desertcart.jp/products/6543422-fast-max-dm-max-cough-and-chest-congestion-medicine-6](https://www.desertcart.jp/products/6543422-fast-max-dm-max-cough-and-chest-congestion-medicine-6)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-05*