Guaifenesin FA™ - 400 mg, 100 capsules

SKU: PH197

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Natural Expectorant Supports Healthy Respiratory System

  • Acts as a powerful expectorant by helping loosen and liquefy mucus
  • Helps thin postnasal drainage from the sinuses and reduce nasal congestion
  • 400 mg fast acting guaifenesin formula

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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.
As a doctor 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 doctor
Other Information:
-Tamper evident: do not use if printed seal under cap is broken or missing.
-Store between 15° to 30°C (59° - 86°F)
Inactive Ingredients: Maltodextrin, povidone, microcrystalline cellulose, magnesium stearate, hydroxy propylmethyl cellulose (vegetable capsule).


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 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, no matter why guaifenesin is being used, it works best if one drinks plenty of water, as extra fluids increase the flow of water and mucus.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

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Customer Reviews

Based on 95 reviews
Marilee P.

Guaifenesin is the reason I’m able to be very active at 85.

W j.T.

No side effects and a great decongestant to boot!

Helps Breathing

This product reduces back drip and makes breathing easier

Sharon T.

Guaifenesin FA™ - 400 mg, 100 capsules

Lorraine D.

Guaifenesin FA™ - 400 mg, 100 capsules

June D.

They work well for me and they don't bother my stomach.

chasha s.

the best!

Lance K.
Highly recommended!

Been using it for over 10 years. Works as good if not better than Mucinex!

Katherine I.

Guaifenesin FA™ (400 mg, 100 veggie capsules) by ProHealth

Patricia A.T.

Guaifenesin FA™ (400 mg, 100 veggie capsules) by ProHealth

Frequently asked questions

Guaifenesin FA™ can be taken with or without food.
The fast-acting formula of Guaifenesin FA™ can provide relief in less than 30 minutes, and effects can last several hours. However, individual results may vary, and it is important to drink plenty of water to help facilitate the expectorant action of guaifenesin.
Keep Guaifenesin FA™ at room temperature and out of direct sunlight.
Guaifenesin FA™ rarely has side effects. Some sensitive individuals may experience digestive upset or headaches, and these tend to resolve after discontinuing use.