1 What is Guiatuss?

Brand: Guiatuss, Organidin NR, Robitussin, Q- Bid LA, Duratuss G, GuaiFENesin, Robitussin, Liquibid

Generic: Guaifenesin

Guaifenesin is an expectorant that helps loosen phlegm or mucus or thin bronchial secretions in lung conditions including chronic bronchitis. This drug is available as a 200 mg tablet or as a liquid containing 100 mg guaifenesin per 5 ml.


You should read the product information leaflet before using this medication. If you have any questions, ask your doctor or pharmacist.

This medication should be taken by mouth as instructed by your doctor. Do not crush or chew the drug because it may diminish its effects. This medication should be taken with a full glass of water unless your doctor tells you otherwise. You should swallow the drug whole.

Your dosage is based on your medical condition and the way you will respond to treatment. Take this drug regularly to experience the most benefits. You should also take this drug at the same time each day.

If you miss a dose, use it as soon as you remember. Continue to use it as prescribed by your doctor or as stated on the package label.


Tell your doctor about prescription drugs, nonprescription drugs, and herbal products you may use with Guaifenesin.

Side Effects

There are no side effects known aside from a possible allergic reaction in people who have previous or unknown hypersensitivity to the drug.

Watch out for signs of allergic reactions such as:

  • Rash
  • Itching
  • Swelling


Before taking this medication, tell your doctor or pharmacist if you have the following:

  • Allergy to guaifenesin
  • Breathing problems such as:
  • Cough with blood or large amounts of mucus
  • Diabetes
  • Liver disease
  • Phenylketonuria (PKU) or any other condition that requires restriction of aspartame (or phenylalanine)
  • Pregnancy or lactation
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