Generic Name(s): Guaifenesin/Dextromethorphan
Drug Class: Upper respiratory combinations
Treats: Cough, Chest congestion
Phanatuss is a combination medication consisting of guaifenesin and dextromethorphan which is used to relieve coughs caused by common cold, bronchitis, or allergies. Guaifenesin is an expectorant that helps to relieve chest congestion by thinning the mucus so you can cough it up easier while dextromethorphan suppresses coughs center in the brain, thus reducing the urge to cough.
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Phanatuss is used by patients with chest congestion and coughs due to allergies, colds, and sometimes infections of the upper respiratory tract. However, dextromethorphan is not effective in treating cough caused by smoking, asthma, or emphysema.
Dextromethorphan and guaifenesin (antitussive and expectorant) are indicated for irritating coughs and works by suppressing coughs center in the brain while guaifenesin acts by loosening mucus in the lungs and helping to cough it up. However, this combination is used to relieve symptoms but not to treat the underlying cause. In summary, Phanatuss is used to treat the following conditions:
- Cold symptoms
- Chest congestion
Your doctor will determine the Phanatuss dosage depending on a number of factors such as weight, medical history, other medical conditions or other medications that you may be using. Stick to the Phanatuss dose as directed by the doctor and never alter the dosage plan unless authorized by the doctor. Below you will find a typical dosage of Phanatuss.
- Dextromethorphan-guaifenesin (10 mg-200 mg) immediate release capsule: Take 2 capsules every 4 hours. Maximum dosage should not exceed 12 capsules daily.
- Dextromethorphan-guaifenesin (10 mg-200 mg/30 ml) oral liquid: Take 30 ml orally, every 4 hours, maximum dose should not exceed 6 doses in 24 hours.
- Children under the age of 6 should not use Phanatuss or any other cough and cold medication.
If you miss a dose, take it as soon as you remember. Skip the missed dose if it's almost time for the next dosing plan. Do not take a double dose to compensate for the missed one.
Phanatuss Side Effects
It is evident that Phanatuss has its fair share of side effects and it is recommended to consult a healthcare professional for medical advice if the symptoms are adverse. Patients should check with their doctors if any of these side effects persist or become bothersome. Below you will find a list of Phanatuss side effects.
Common side effects:
- Abdominal upset
If these rare and severe side effects occur, you should seek medical attention immediately:
- Severe allergic reactions (itching, hives, rashes, dyspnea, tight chest, swelling of the mouth, face or lips).
This is not a complete list of side effects and others may occur. Notify your doctor if other side effects are encountered than these listed above.
Like any drug, Phanatuss may interact with other drugs and substances. Before dispensing this medication, the doctor or pharmacist should enquire the patient on the medical history to consider all the prescription and nonprescription drugs he or she might be taking. Medications that are especially important to consider or avoid while taking Phanatuss include the following.
- MAO inhibitors such as phenelzine, isocarboxazid, tranylcypromine.
- Sedative-hypnotic and antianxiety drugs
- Antiepileptics, e.g. carbamazepine
- Muscle relaxants ;
This is not an all-inclusive list of possible Phanatuss drug interactions. You should keep a list of all products you may be using (including prescription/OTC drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or alter the dosage of any medicines without approval from your doctor.