Dr. Vinod Verma MBBS , Diabetology

Dextromethorphan + Guaifenesin is related to codeine and is a non-opioid derivative of morphine. From gastrointestinal tract it passes into the bloodstream, crosses the blood-brain barrier and suppresses the cough center, bringing relief to the patient.

Dr. Mayank Yadav MBBS , General Physician

Yes, you may discontinue taking Dextromethorphan + Guaifenesin on your own when you feel that a cough has subsided. However, if the symptoms do not improve even after taking Dextromethorphan + Guaifenesin for about 7 days, consult a doctor immediately.

Dr. Rajeev Kumar Ranjan MBBS, MS , Urology, General Surgery, Laparoscopic Surgery, Obstetrics & Gynaecology

Dextromethorphan + Guaifenesin is available in the form of tablet, syrup, and lozenge. The tablet should be swallowed with water, the syrup should be taken with a measuring spoon or a container and lozenge should be allowed to melt inside the mouth. Dextromethorphan + Guaifenesin is taken every 4 to 12 hours as per the requirement. It is important to read the label carefully and follow the instructions completely. If you are giving Dextromethorphan + Guaifenesin to a child then make sure it is not given to a child younger than 4 years old. Also, make sure that you are using a brand that is exclusively for children. Be very careful while administering more than one type of drug to the child because if there is a common ingredient in more than one drug then it could lead to overdose. It is suitable to take Dextromethorphan + Guaifenesin under the guidance of a doctor or a pharmacist. It is also important to talk to your doctor if the symptoms do not improve in 7 days.

Dr. Yogesh Kumar MBBS , General Physician

Yes, Dextromethorphan + Guaifenesin may cause drowsiness as it is one of the side-effects. It is, therefore, recommended that one doesn't operate machinery or drive under the influence of the drug. 

Dr. Saurabh Dhamdhere MBBS , Orthopedics

You should use Dextromethorphan + Guaifenesin for as long as it is prescribed by your doctor or till you feel a relief in your symptoms. Dextromethorphan + Guaifenesin is a prescription drug, and it is best to take it under medical supervision.