Dextromethorphan/ guaifenesin/ phenylephrine liquid
Generic Name: dextromethorphan/guaifenesin/phenylephrine (dex-troe-meth-OR-fan/gwye-FEN-eh-sin/fen-ill-EF-rin)
Brand Name: Examples include Tussidex and Zotex
Dextromethorphan/ guaifenesin/ phenylephrine liquid is used for:
Relieving congestion, cough, and throat and airway irritation due to colds, flu, or hay fever. It may also be used for other conditions as determined by your doctor.
Dextromethorphan/guaifenesin/phenylephrine liquid is a decongestant, cough suppressant, and expectorant combination. It works by constricting blood vessels and reducing swelling in the nasal passages, loosening mucus and lung secretions in the chest, and making coughs more productive. It also works in the brain to help decrease the cough reflex to reduce a dry cough.
Do NOT use dextromethorphan/ guaifenesin/ phenylephrine liquid if:
- you are allergic to any ingredient in dextromethorphan/guaifenesin/phenylephrine liquid
- you have severe high blood pressure, rapid heartbeat, or other severe heart problems (eg, heart blood vessel disease)
- you have taken furazolidone or a monoamine oxidase (MAO) inhibitor (eg, phenelzine) within the last 14 days
Contact your doctor or health care provider right away if any of these apply to you.
Before using dextromethorphan/ guaifenesin/ phenylephrine liquid:
Some medical conditions may interact with dextromethorphan/guaifenesin/phenylephrine liquid. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
- if you are pregnant, planning to become pregnant, or are breast-feeding
- if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
- if you have allergies to medicines, foods, or other substances
- if you have a history of glaucoma, an enlarged prostate gland or other prostate problems, heart problems, diabetes, high blood pressure, blood vessel problems, adrenal gland problems, an overactive thyroid, seizures, or stroke
- if you have a chronic cough, lung problems (eg, asthma, chronic bronchitis, emphysema), or chronic obstructive pulmonary disease (COPD), or if your cough occurs with large amounts of mucus
Some MEDICINES MAY INTERACT with dextromethorphan/guaifenesin/phenylephrine liquid. Tell your health care provider if you are taking any other medicines, especially any of the following:
- Beta-blockers (eg, propranolol), COMT inhibitors (eg, tolcapone), furazolidone, indomethacin, MAO inhibitors (eg, phenelzine), or tricyclic antidepressants (eg, amitriptyline) because the risk of side effects from dextromethorphan/guaifenesin/phenylephrine liquid may be increased
- Digoxin or droxidopa because the risk of irregular heartbeat or heart attack may be increased
- Bromocriptine because the risk of side effects may be increased by dextromethorphan/guaifenesin/phenylephrine liquid
- Guanadrel, guanethidine, mecamylamine, methyldopa, or reserpine because their effectiveness may be decreased by dextromethorphan/guaifenesin/phenylephrine liquid
This may not be a complete list of all interactions that may occur. Ask your health care provider if dextromethorphan/guaifenesin/phenylephrine liquid may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.
How to use dextromethorphan/ guaifenesin/ phenylephrine liquid:
Use dextromethorphan/guaifenesin/phenylephrine liquid as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- Dextromethorphan/guaifenesin/phenylephrine liquid may be taken with or without food.
- Drink plenty of water while taking dextromethorphan/guaifenesin/phenylephrine liquid.
- Use a measuring device marked for medicine dosing. Ask your pharmacist for help if you are unsure of how to measure your dose.
- If you miss a dose of dextromethorphan/guaifenesin/phenylephrine liquid, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
Ask your health care provider any questions you may have about how to use dextromethorphan/guaifenesin/phenylephrine liquid.
Important safety information:
- Dextromethorphan/guaifenesin/phenylephrine liquid may cause dizziness or drowsiness. Do not drive, operate machinery, or do anything else that could be dangerous until you know how you react to dextromethorphan/guaifenesin/phenylephrine liquid. Using dextromethorphan/guaifenesin/phenylephrine liquid alone, with certain other medicines, or with alcohol may lessen your ability to drive or perform other potentially dangerous tasks.
- Do not take appetite suppressants while you are taking dextromethorphan/guaifenesin/phenylephrine liquid without checking with your doctor.
- Dextromethorphan/guaifenesin/phenylephrine liquid contains phenylephrine. Before you begin taking any new prescription or nonprescription medicine, read the ingredients to see if it also contains phenylephrine. If it does or if you are uncertain, contact your doctor or pharmacist.
- Do NOT exceed the recommended dose or take dextromethorphan/guaifenesin/phenylephrine liquid for longer than prescribed without checking with your doctor.
- If your symptoms do not improve within 5 to 7 days or if they become worse, check with your doctor.
- Dextromethorphan/guaifenesin/phenylephrine liquid may interfere with certain lab test results. Make sure that all of your doctors and lab personnel know that you are taking dextromethorphan/guaifenesin/phenylephrine liquid.
- Before you have any medical or dental treatments, emergency care, or surgery, tell the doctor or dentist that you are using dextromethorphan/guaifenesin/phenylephrine liquid.
- Use dextromethorphan/guaifenesin/phenylephrine liquid with caution in the ELDERLY because they may be more sensitive to its effects.
- Caution is advised when using dextromethorphan/guaifenesin/phenylephrine liquid in CHILDREN because they may be more sensitive to its effects.
- PREGNANCY and BREAST-FEEDING: If you become pregnant while taking dextromethorphan/guaifenesin/phenylephrine liquid, discuss with your doctor the benefits and risks of using dextromethorphan/guaifenesin/phenylephrine liquid during pregnancy. It is unknown if dextromethorphan/guaifenesin/phenylephrine liquid is excreted in breast milk. Do not breast-feed while taking dextromethorphan/guaifenesin/phenylephrine liquid.
Possible side effects of dextromethorphan/ guaifenesin/ phenylephrine liquid:
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Seek medical attention right away if any of these SEVERE side effects occur:
Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.
Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; tremor.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.
If OVERDOSE is suspected:
Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately. Symptoms may include blurred vision; confusion; hallucinations; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; unusually fast, slow, or irregular heartbeat; vomiting.Proper storage of dextromethorphan/guaifenesin/phenylephrine liquid:
Store dextromethorphan/guaifenesin/phenylephrine liquid at room temperature, between 59 and 86 degrees F (15 and 30 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep dextromethorphan/guaifenesin/phenylephrine liquid out of the reach of children and away from pets.
- If you have any questions about dextromethorphan/guaifenesin/phenylephrine liquid, please talk with your doctor, pharmacist, or other health care provider.
- Dextromethorphan/guaifenesin/phenylephrine liquid is to be used only by the patient for whom it is prescribed. Do not share it with other people.
- If your symptoms do not improve or if they become worse, check with your doctor.
- Check with your pharmacist about how to dispose of unused medicine.
This information should not be used to decide whether or not to take dextromethorphan/guaifenesin/phenylephrine liquid or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about dextromethorphan/guaifenesin/phenylephrine liquid. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to dextromethorphan/guaifenesin/phenylephrine liquid. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using dextromethorphan/guaifenesin/phenylephrine liquid.
Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using this medicine.
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