Canada Drugs Direct

Visiting from Canada?

Want to save up to 80% on your medications? Signup below to be notified if we open a Canadian Online Pharmacy.

I agree to receive email updates from Canada Drugs Direct

Looking for Call us toll free 1-800-500-2897

Mucinex (Guaifenesin)


Top brand choice

Strength Pack Size Qty
Pack Size
Pack Size

You'll have option to make 4 interest-free payments by credit card once your order is confirmed using

What if I find a lower price with another pharmacy?

We guarantee the lowest price on all of our prescription products. If you find your medications cheaper at any other recognized licensed mail order pharmacy, we will not only match their price, we will beat it by 25% of the difference. It is our 125% price match guarantee!

Example: If you find a product on Canada Drugs Direct for $50.00 and find the same product for $40.00 at another mail order pharmacy, we will provide you with a $12.50 discount, bringing your total to $37.50.

To get the discount please make sure to mention the price match to the customer service team when they call to collect payment for your order. Or call toll free at 1-888-904-8467 to place the order through the phone.

Terms & Conditions of Program

  • Guaranteed lowest price is only valid at the time of sale.
  • We will only match the current advertised price.
  • Products must be identical and in stock at the time of placing an order with a licensed mail order pharmacy. They must be an online Canadian pharmacy with an address in Canada.
  • Products must be authentic in brand and size (same manufacturer, same country of manufacture, same pack size, same strength and same quantity).
  • Products must be new. We cannot match the price of any used, short expiry or expired product.
  • Price match can only be issued over the phone with our customer service team. Please note at this time we cannot offer price matching for the products Ozempic or Saxenda.
What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


Mucinex (guaifenesin) is a medication known as an expectorant. It is used to help with the symptoms of chest congestion. Mucinex works by breaking up phlegm in your airways to allow your cough to be more productive. Mucinex tablets have an extended-release coating on them to release the drug slowly over time. You can buy Mucinex 600mg or Mucinex 1200mg tablets without a prescription. Store the tablets at room temperature. Keep out of reach of children.


  • Do not chew or crush extended-release tablets.
  • Take Mucinex tablets with a full glass of water. Drinking plenty of water will help break up mucus.
  • You can take Mucinex without regard to meals.
  • Mucinex Dosage:
    • Take 600mg – 1200mg every 12 hours. Do not exceed 2400mg per day.


The active ingredient in Mucinex is guaifenesin. For a full list of inactive ingredients, see the package insert.

Fact Table
Formula C10H14O4
License US FDA
Routes of administration By mouth (tablet)
Legal status US: OTC
Chemical Name Guaifenesin
Elimination half-life 1-5 hours
Dosage (Strength) 600mg, 1200mg
Pregnancy Risk not ruled out
Brands Mucinex
Protein binding -
PubChem CID 3516
MedlinePlus a682494
ChEBI 5551
ATC code R05CA03, QM03BX90
DrugBank DB00874
KEGG D00337
Bioavailability -


  • Children under the age of 12 should not use Mucinex extended-release tablets. Talk to your doctor about alternative therapies for young children.
  • If you have a cough that lasts more than seven days, consult your physician.
  • If you are pregnant or intending to become pregnant, talk to your doctor before using Mucinex.

Side Effects

  • Nausea
  • Vomiting

Other Considerations

  • You can buy Mucinex in a variety of formulations and strengths, including extended-release tablets, liquid, and combination products.


  1. DailyMed - MUCINEX- guaifenesin tablet, extended release. (2019). Retrieved March 22, 2020
  2. Guaifenesin. (n.d.). Retrieved March 22, 2020

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

product-reviews Product Reviews