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Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.



Potassium guaiacolsulfonate is an expectorant used to help loosen and clear mucus. Decongestants help relieve a stuffy nose, promote sinus draining, and improve breathing. This combination medication is used to treat symptoms associated with the common cold, allergies, sinusitis, or bronchitis.

How To Use

Take this medication by mouth as directed with a full glass (8 oz or 240 ml) of water. Do not increase the dose or take it more often or longer than prescribed. It is recommended to drink plenty of fluids while taking this medication, unless your doctor instructs you otherwise. If your symptoms do not improve after 7 days or if you develop a high fever, notify your doctor promptly.

Side Effects

Nausea, headache, dizziness, drowsiness, restlessness, nervousness, or trouble sleeping may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Tell your doctor immediately if any of these unlikely but serious side effects occur: chest pain, rapid heart rate, shaking/tremor, trouble breathing, weakness, blurred vision, difficulty urinating. An allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include: rash, itching, swelling, severe dizziness, trouble breathing. If you notice other effects not listed above, contact your doctor or pharmacist.


This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: severe high blood pressure, severe heart/blood vessel disease (coronary artery disease). Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart problems, high blood pressure, lung disease, kidney disease, thyroid disease (hyperthyroidism), diabetes, glaucoma, problems urinating (e.g., enlarged prostate), any allergies. This drug may make you dizzy or drowsy; use caution engaging in activities requiring alertness such as driving or using machinery. Avoid alcoholic beverages. Caution is advised when using this drug in the elderly because they may be more sensitive to the effects of the drug. This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor. It is not known whether this drug passes into breast milk. Due to the potential risk to the infant, breast-feeding while using this drug is not recommended.

Drug Interactions

This drug should not be used with or within 14 days of taking MAO inhibitors (e.g., furazolidone, linezolid,moclobemide, phenelzine procarbazine, selegiline, isocarboxazid,tranylcypromine). If you are currently using any of these medications, tell your doctor or pharmacist before starting this product. Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription products you may use, especially of: tricyclic anti-depressants (e.g., amitriptyline, doxepin), adrenalin-like drugs (e.g., ephedrine, methylphenidate), certain high blood pressure drugs (e.g., guanethidine, methyldopa, reserpine, beta-blockers such as propranolol), indomethacin, herbal products containing ephedra. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include: vomiting, slow/fast/irregular heartbeat, or seizures.


Do not share this medication with others.

Missed Dose

If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.


Store at room temperature between 68 and 77 degrees F (20-25 degrees C) away from light and moisture. Do not store in the bathroom. Keep all medicines away from children and pets.