Generic Name: codeine and guaifenesin (KOE deen and gwye FEN a sin)Brand Names: Allfen CD, Allfen CDX, Brontex, Cheracol with Codeine, Cheratussin AC, Dex-Tuss, Diabetic Tussin C, Duraganidin NR, ExeClear-C, Guaiatussin AC, Guaifen-C, Guiatuss AC, Guiatussin with Codeine, Iophen-C NR, M-Clear WC, Mar-cof CG, Mytussin AC, Robafen AC, Robitussin-AC, Tussi-Organidin NR, Tussi-Organidin-S NR, Tussiden C, Tusso-C
Codeine is in a group of drugs called narcotics. It is a cough suppressant that affects the signals in the brain that trigger cough reflex.
Guaifenesin is an expectorant. It helps loosen mucus congestion in your chest and throat, making it easier to cough out through your mouth.
The combination of codeine and guaifenesin is used to treat cough and to reduce chest congestion caused by upper respiratory infections or the common cold.Codeine and guaifenesin will not treat a cough that is caused by smoking, asthma, or emphysema.
Codeine and guaifenesin may also be used for other purposes not listed in this medication guide.What is the most important information I should know about M-Clear WC (codeine and guaifenesin)?Do not use any other over-the-counter cough or cold medication without first asking your doctor or pharmacist. If you take certain products together you may accidentally take too much of one or more types of medicine. Read the label of any other medicine you are using to see if it contains guaifenesin. This medication can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert. Codeine may be habit-forming and should be used only by the person it was prescribed for. This medication should never be shared with another person, especially someone who has a history of drug abuse or addiction. Keep the medication in a secure place where others cannot get to it. Always ask a doctor before giving a cough or cold medicine to a child. Death can occur from the misuse of cough and cold medicines in very young children.What should I discuss with my healthcare provider before taking M-Clear WC (codeine and guaifenesin)?You should not take this medication if you are allergic to codeine or guaifenesin.
If you have any of these other conditions, you may need a dose adjustment or special tests to safely take codeine and guaifenesin:
heart disease, heart rhythm disorder;
asthma, COPD, emphysema, or other breathing disorders;
a history of head injury or brain tumor;
epilepsy or other seizure disorder;
a stomach or intestinal disorder;
Addison's disease or other adrenal gland disorders;
curvature of the spine;
a thyroid disorder;
enlarged prostate; or
a history of depression, mental illness, or drug addiction;
Liquid forms of this medication may contain sugar or artificial sweetener (phenylalanine). Talk to your doctor before using this form of codeine and guaifenesin if you have diabetes or phenylketonuria (PKU).
Take this medication exactly as it has been prescribed by your doctor. Do not use the medication in larger amounts, or use it for longer than recommended. Follow the directions on your prescription label. Cough or cold medicine is usually taken only for a short time until your symptoms clear up.Always ask a doctor before giving cough or cold medicine to a child. Death can occur from the misuse of cough or cold medicine in very young children. Take codeine and guaifenesin with food if it upsets your stomach. Drink extra fluids to help loosen the congestion and lubricate your throat while you are taking this medication.
Measure liquid medicine with a special dose-measuring spoon or cup, not a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.
Call your doctor if your symptoms do not improve after 7 days of treatment, or if you also have a fever, headache, or skin rash.
This medication can cause you to have unusual results with certain medical tests. Tell any doctor who treats you that you are using codeine and guaifenesin.Do not stop using this medication suddenly after long-term use or you could have unpleasant withdrawal symptoms. Talk to your doctor about how to avoid withdrawal symptoms when stopping the medication. Store codeine and guaifenesin at room temperature away from moisture, heat, and light. Keep the bottle tightly closed when not in use. Keep track of how much of this medicine has been used from each new bottle. Codeine is a drug of abuse and you should be aware if any person in the household is using this medicine improperly or without a prescription.
Since cough medicine is usually taken only as needed, you may not be on a dosing schedule. If you are taking the medication regularly, 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.
Overdose symptoms may include extreme dizziness or drowsiness, nausea, vomiting, sweating, confusion, hallucinations, cold and clammy skin, blue-colored lips or fingernails, weak or limp muscles, pinpoint pupils, weak pulse, slow breathing, fainting, or seizures (convulsions).
Do not use any other over-the-counter cough or cold medication without first asking your doctor or pharmacist. Guaifenesin is contained in many medicines available over the counter. If you take certain products together you may accidentally take too much of a certain drug. Read the label of any other medicine you are using to see if it contains guaifenesin.Avoid drinking alcohol. It can increase some of the side effects of this medication.
severe dizziness or drowsiness;
confusion, hallucinations, unusual thoughts or behavior;
urinating less than usual or not at all; or
slow heart rate, weak pulse, fainting, weak or shallow breathing.
Less serious side effects include:
dizziness, drowsiness, headache;
warmth, redness, or tingling under your skin;
nausea, vomiting, upset stomach;
skin rash or itching.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Also tell your doctor if you are using any of the following drugs:
quinidine (Quinaglute, Quinidex, Quin-Release);
naloxone (Narcan); or
This list is not complete and there may be other drugs that can interact with codeine and guaifenesin. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.