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What happens if I miss a dose (Poly-Tussin DHC)?

Since cough and cold 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.

What happens if I overdose (Poly-Tussin DHC)?

Seek emergency medical attention if you think you have used too much of this medicine. An overdose of dihydrocodeine can be fatal.

Overdose symptoms may include extreme drowsiness, pinpoint pupils, cold and clammy skin, limp muscles, fainting, seizure (convulsions), shallow breathing or breathing that stops.

What should I avoid while taking brompheniramine, dihydrocodeine, and phenylephrine (Poly-Tussin DHC)?

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.

Avoid drinking alcohol while you are taking this medication. Alcohol can add to the side effects of brompheniramine, dihydrocodeine, and phenylephrine.

Tell your doctor if you regularly use other medicines that make you sleepy (such as pain medication, sleeping pills, muscle relaxers, and medicine for seizures, depression or anxiety). They can add to sleepiness caused by brompheniramine, dihydrocodeine, and phenylephrine.

Do not use any other over-the-counter cold, allergy, or pain medication without first asking your doctor or pharmacist. Brompheniramine or phenylephrine are 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 brompheniramine or phenylephrine.

What other drugs will affect brompheniramine, dihydrocodeine, and phenylephrine (Poly-Tussin DHC)?

Tell your doctor about all other medicines you use, especially:

• methyldopa (Aldomet);
• mecamylamine (Inversine);
• reserpine;
• promethazine (Phenergan, Adgan, Anergan 50, Pentazine);
• a beta-blocker such as atenolol (Tenormin), carteolol (Cartrol), metoprolol (Lopressor, Toprol), nadolol (Corgard), propranolol (Inderal), sotalol (Betapace), timolol (Blocadren), and others; or
• an antidepressant such as amitriptyline (Elavil), clomipramine (Anafranil), imipramine (Janimine, Tofranil), and others.

This list is not complete and there may be other drugs that can interact with brompheniramine, dihydrocodeine, and phenylephrine. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about brompheniramine, dihydrocodeine, and phenylephrine.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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