GUAIFENESIN/PSEUDOEPHEDRINE - ORAL
Common Brand Name(s): Duratuss, Maxifed, Venbid, Zephrex
Phonetic Pronunciation: (gweye-FEN-eh-sin/sue-doh-eff-ED-rin)
Information last revised May 2010
What does GUAIFENESIN/PSEUDOEPHEDRINE-PO look like?
Triaminic Softchews 15 mg-50 mg Tab
Maxifed (IR) 60 mg-400 mg Tab
Respaire-30 30 mg-150 mg Cap
Triaminic Chest-Nasal Congestion 15 mg-50 mg/5 mL Syrup
Maxifed-G (IR) 40 mg-400 mg Tab
Trispec Dex 30 mg-25 mg/5 mL Oral Liquid
AMBI 60-580 60 mg-580 mg Tab
Ambi 60PSE-400GFN 60 mg-400 mg Tab
Maxifed-G 60 mg-580 mg Tab
Ambi 40PSE-400GFN 40 mg-400 mg Tab
Uses:
This combination medication is used to temporarily treat cough and runny/stuffy nose (nasal congestion) caused by infections (such as the common cold), allergies (such as hay fever), and other breathing illnesses. This product is usually not used for ongoing cough from smoking or long-term breathing problems (such as chronic bronchitis, emphysema) unless directed by your doctor. Guaifenesin is an expectorant. It works by thinning and loosening mucus in the airways, clearing congestion, and making breathing easier. Pseudoephedrine is a decongestant (sympathomimetic). It reduces nasal congestion by narrowing the blood vessels in the nose. If you are self-treating with this medication, it is important to read the package instructions carefully before you start using this product to be sure it is right for you. (See also Precautions section.) Cough-and-cold products have not been shown to be safe or effective in children younger than 6 years. Therefore, do not use this product to treat cold symptoms in children younger than 6 years unless specifically directed by the doctor. Some products (such as long-acting tablets/capsules) are not recommended for use in children younger than 12 years. Ask your doctor or pharmacist for more details about using your product safely. These products do not cure or shorten the length of the common cold and may cause serious side effects. To decrease the risk for serious side effects, carefully follow all dosage directions. Do not give other cough-and-cold medication that might contain the same or similar ingredients (see also Drug Interactions section). Ask the doctor or pharmacist about other ways to relieve cough and cold symptoms (such as drinking enough fluids, using a humidifier or saline nose drops/spray).
Missed Dose
If you miss a dose, take 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.
How To Use
Take this medication by mouth with or without food, as directed by your doctor. If you are self-treating, follow all directions on the product package. To prevent trouble sleeping, do not take this medication close to bedtime. If you are uncertain about any of the information, ask your doctor or pharmacist. If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose. Guaifenesin may have a bitter taste. Swallow capsules and tablets whole. Some tablets may be split if they have a score line and your doctor or pharmacist tells you to do so. Chewable tablets may be swallowed whole or chewed. Dosage is based on your age, medical condition, and response to treatment. Do not increase your dose or take this drug more often than directed. Drink plenty of fluids while taking this medication. Fluids will help to break up mucus and clear congestion. Caffeine can increase the side effects of this medication. Avoid drinking large amounts of beverages containing caffeine (coffee, tea, colas), eating large amounts of chocolate, or taking nonprescription products that contain caffeine. Tell your doctor if your condition is accompanied by fever, severe sore throat, rash, persistent headache, or if it persists, returns, or worsens after 7 days. These may be signs of a serious medical problem. Seek immediate medical attention if you think you may have a serious medical problem.
Drug Interactions
The effects of some drugs can change if you take other drugs or herbal products at the same time. This can increase your risk for serious side effects or may cause your medications not to work correctly. These drug interactions are possible, but do not always occur. Your doctor or pharmacist can often prevent or manage interactions by changing how you use your medications or by close monitoring. To help your doctor and pharmacist give you the best care, be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products) before starting treatment with this product. While using this product, do not start, stop, or change the dosage of any other medicines you are using without your doctor's approval. Some drugs that may interact with this product include: other decongestants (taken by mouth or sprayed into the nose), tricyclic antidepressants (such as nortriptyline, amitriptyline), MAO inhibitors (furazolidone, isocarboxazid, linezolid, moclobemide, phenelzine, procarbazine, rasagiline, selegiline, tranylcypromine). Avoid taking MAO inhibitors within 2 weeks before and during treatment with this medication. In some cases a serious, possibly fatal drug interaction may occur. Pseudoephedrine may decrease the effectiveness of some blood pressure medications (such as beta blockers, reserpine, guanethidine, methyldopa, mecamylamine). Check the labels on all your medicines (such as cough-and-cold products, diet aids) because they may contain ingredients that could increase your heart rate or blood pressure. Before using these products with this medication, ask your pharmacist how to use them safely. Pseudoephedrine and guaifenesin are available in both prescription and nonprescription products. Check the labels of all your medications carefully to make sure you are not taking more than one product containing these medications. The guaifenesin in this product can affect the results of certain lab tests (such as urine levels of certain acids). Make sure laboratory personnel and all your doctors know you use this drug. This document does not contain all possible drug interactions. Keep a list of all the products you use. Share this list with your doctor and pharmacist to lessen your risk for serious medication problems.
Notes
If your doctor prescribed this medication, do not share this medication with others. Keep all regular medical and laboratory appointments. This medication is for temporary use only. Do not take this medication for more than 7 days unless your doctor tells you to do so. Tell your doctor if your condition lasts longer than 7 days.
Overdose
If overdose is suspected, contact a poison control center or emergency room immediately. US residents can call the US National Poison Hotline at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: severe dizziness/fainting, fast irregular heartbeat, slow/fast/shallow breathing, hallucinations, seizures.
Precautions
Before taking this medication, tell your doctor or pharmacist if you are allergic to pseudoephedrine or guaifenesin; or if you have any other allergies. Also tell your doctor if you have had a bad reaction to similar drugs (sympathomimetics such as ephedrine, phenylephrine). This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using this medication, tell your doctor or pharmacist your medical history, especially of: breathing problems (such as emphysema, chronic bronchitis, asthma, smoker's cough), cough with blood or large amounts of mucus, high blood pressure, heart disease (such as chest pain, heart failure, heart attack), fast/slow/irregular heartbeat, diabetes, a certain eye problem (glaucoma), difficulty urinating (such as due to enlarged prostate), overactive thyroid (hyperthyroidism). This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages. Liquid products or chewable tablets may contain sugar and/or aspartame. Liquid products may also contain alcohol. Caution is advised if you have diabetes, liver disease, phenylketonuria (PKU), or any other condition that requires you to limit/avoid these substances in your diet. Ask your doctor or pharmacist about using this product safely. Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). Caution is advised when using this product in children because they may be more sensitive to its side effects, especially nervousness, irritability, and high blood pressure. (See also Uses Section.) During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor. The pseudoephedrine in this product passes into breast milk and may have undesirable effects on a nursing infant. It is unknown if guaifenesin passes into breast milk. Discuss the risks and benefits with your doctor before breast-feeding.
Storage
Store at room temperature away from light and moisture. Do not store in the bathroom. Do not freeze liquid forms of this medication. Different brands of this medication have different storage needs. Check the product package for instructions on how to store your brand, or ask your pharmacist. Keep all medications away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.
Side Effects
Nausea or headache may occur. If either of these effects persist or worsen, tell your doctor or pharmacist promptly. If your doctor has directed you to use this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor immediately if any of these unlikely but serious side effects occur: dizziness, fainting, fast/irregular/pounding heartbeat, mental/mood changes (such as anxiety, confusion, nervousness, irritability), shaking (tremor), trouble sleeping, difficult/painful urination. A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.
The information contained in the First DataBank databases is intended to supplement the knowledge of physicians, pharmacists, and other healthcare professionals regarding drug therapy problems and patient counselling information. This information is advisory only and is not intended to replace sound clinical judgment in the delivery of healthcare services. First DataBank disclaims all warranties, whether expressed or implied, including any warranty as to the quality, accuracy, and suitability of this information for any purpose.
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