Dextromethorphan is a cough suppressant. It affects the signals in the brain that trigger cough reflex. Guaifenesin is an expectorant. It helps loosen congestion in your chest and throat, making it easier to cough out through your mouth. ... more

Severe side effects from this medicine are usually only seen in patients who have taken very high doses. ... more

Seek emergency medical attention if you think you have used too much of this medicine. Symptoms of a dextromethorphan and promethazine overdose may include feeling restless or nervous, severe drowsiness, dizziness, dry mouth, large pupils, flushing, ... more

Dextromethorphan is a cough suppressant. It affects the signals in the brain that trigger cough reflex. Guaifenesin is an expectorant. It helps loosen congestion in your chest and throat, making it easier to cough out through your mouth. The ... more

At high doses of Dextromethorphan, patients can have problems related to memory and confusion. Go ChaCha! ... more

Before taking this medication, tell your doctor if you are using any of the following drugs: celecoxib (Celebrex) cinacalcet (Sensipar) darifenacin (Enablex) imatinib (Gleevec) quinidine (Quinaglute, Quinidex) ranolazine (Ranexa) ritonavir (Norvir) ... more

Seek emergency medical attention if you think you have used too much of this medicine. Overdose symptoms may include feeling restless or nervous. ... more

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose. ... more

Kophane (chlorpheniramine/dextromethorphan/phenylpropanolamine) side ... more

CostThe cost rating is based on the average wholesale price for a drug. The average wholesale price is the suggested selling price for a drug, much like the sticker price on a car. Insurance companies often use this cost as the basis for drug ... more