Guaifenesin FA™ 3-Pack - 400 mg, 100 veggie capsules by ProHealth

Helps the Body Eliminate Excess Calcium and Phosphates

  • 400 mg fast acting guaifenesin formula
  • Helps loosen mucus
  • Natural expectorant relieves chest congestion


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Breathe Easier with ProHealth's Guaifenesin FA™
Guaifenesin FA™ 400mg acts as a powerful expectorant by helping loosen and liquefy mucus. Guaifenesin is derived from a tree bark extract called guaiacum, historically used for its expectorant qualities in the Caribbean region and adopted by European explorers in the 1500's. Note Guaifensin FA™ contains no salicylates, flavorings, dyes, soy, yeast, dairy, gluten.

Guaifenesin Mechanism of Action
Guaifenesin works by drawing water into the bronchi - the air passages branching into our lungs. The released water both thins the mucus and lubricates the airway, facilitating the removal of cold and allergy associated mucus from the chest by coughing, and making it easier to breathe. Guaifenesin is also considered helpful for thinning postnasal drainage from the sinuses and reducing nasal congestion, and so may relieve sinus pressure/ headache. As Dr. Sarah Myhill comments, "Whoever designed the human body needs a black mark for putting in sinuses! They are cavities in the bones of the face with only one entry and exit hole which is easily blocked by catarrh or swollen mucus membranes." When this occurs, less oxygen can enter the sinuses, promoting bacterial overgrowth and causing sinusitis.

Guaifenesin can help to relieve congestion by increasing the clearance of secretions, helping with the mucus membrane's natural job of washing away invading viruses, bacteria, pollen and other potential allergens - "the first level of immune defense." Importantly, whether used to ease the congestion of colds or rhinosinusitis, or to support healthy vocal folds, guaifenesin works best if one drinks plenty of water, as extra fluids increase the flow of water and mucus.

Label Information

Drug Facts

Active Ingredient (in each immediate-release capsule): Guaifenesin 400 mg
Purpose: Expectorant
Uses: Helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive.
Consult a physician before use if you have
-Persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis, or emphysema
-Cough accompanied by too much phlegm (mucus)
Stop use and consult a physician if cough lasts more than 7 days, comes back, or occurs with fever, rash, or persistent headache. These could be signs of a serious illness.
If pregnant or breast-feeding, ask your physician before use. KEEP OUT OF REACH OF CHILDREN. In case of overdose, get medical help or contact a Poison Control Center right away.
-Do not exceed 6 doses in 24 hours
-Take with a full glass of water
-Adults and children 12 years of age and over: 1 capsule, every 4 hours.
-Children under 12 years of age: consult a physician
Other Information:
-Tamper evident: do not use if neckband is broken
-Store between 15° to 30°C (59° - 86°F)
Inactive Ingredients: Microcrystalline cellulose, Magnesium stearate, Hydroxypropyl methyl cellulose (as empty veggie capsules)
  • Suggested Use: Do not exceed 6 doses in 24 hours. Take with a full glass of water. Adults and children 12 years of age and over: 1 capsule every 4 hours. Children under 12 years of age: consult a physician.
  • Storage: Store between 15°-30°C (59°-86°F)
  • Contains No: salicylates, binders, flavorings, dyes, soy, yeast, dairy, gluten.


Customer Reviews

Based on 8 reviews
Better sleep

My 89 year old mom has had a chronic cough because of unproductive excess mucus. Since she’s been taking guaifenesin FA she’s able to sleep through the night more certainly because she’s not having to cough. It’s clear that it thins out the mucus enough to allow her to breathe better during the night. And it’s super helpful that there’s only one ingredient.

cathy w.
Clears mucus

Love this product ! Have been using it for over 20 years. The 3 pack is a good buy & dye free !

Cleanest Guaifenesin Available

Have been using for years because it has virtually no fillers to aggravate allergies and helps tremendously with my sinusitis and breathing. Hope ProHealth continues to make this great product available. The 3-Pack makes it easier to have this on-hand at a good price.

Stacey L.

Guaifenesin FA™ 3-Pack

Linda C.
Guafenesin FA Prohealth

Following the Guaifenesin protocol. This product is clean and in dosage recommended for easy titrating.

Patti D.
Helps to clear lungs

As far as a non prescription option this is our go to for helping clear our lungs. It's not perfect but it's not harmful or dangerous like a powerful drug would be

Rebecca B.
Total Savior

Changed my life around. Been taking two pills a day for over a year. I can function, I can work, I can take the day. I used to be at a point of total dibilitation, could not do anything.

Margaret N.
Good product

I like guaifensesin. It keeps my sinuses clear. This doesn't have any added ingredients in it. The price is good.