1. The Common Cold Slideshow Pictures
2. Slideshow: Treating Your Child's Cold or Fever
3. Take the Cold & Flu Quiz

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of hydrocodone can be fatal.

Overdose symptoms may include extreme drowsiness, feeling restless or nervous, vomiting, stomach pain, warmth or tingly feeling, seizure (convulsions), pinpoint pupils, confusion, cold and clammy skin, weak pulse, shallow breathing, fainting, or breathing that stops.

What should I avoid while taking chlorpheniramine, hydrocodone, and phenylephrine?

Chlorpheniramine, hydrocodone, and phenylephrine may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

Drinking alcohol can increase certain side effects of chlorpheniramine, hydrocodone, and phenylephrine.

What other drugs will affect chlorpheniramine, hydrocodone, and phenylephrine?

Before using this medication, tell your doctor if you regularly use other medicines that make you sleepy (such as cold or allergy medicine, sedatives, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures, depression, or anxiety). They can add to sleepiness caused by chlorpheniramine, hydrocodone, and phenylephrine.

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

• blood pressure medication;
• cimetidine (Tagamet);
• rifampin (Rifadin, Rifater, Rifamate, Rimactane);
• zidovudine (Retrovir, AZT);
• an antidepressant;
• a diuretic (water pill);
• medication to treat irritable bowel syndrome;
• bladder or urinary medications such as oxybutynin (Ditropan, Oxytrol) or tolterodine (Detrol);
• aspirin or salicylates (such as Disalcid, Doan's Pills, Dolobid, Salflex, Tricosal, and others);
• seizure medication such as phenytoin (Dilantin) or phenobarbital (Luminal, Solfoton);
• a beta-blocker such as atenolol (Tenormin), carteolol (Cartrol), metoprolol (Lopressor, Toprol), nadolol (Corgard), propranolol (Inderal), sotalol (Betapace), timolol (Blocadren), and others; or
• medicines to treat psychiatric disorders, such as chlorpromazine (Thorazine), haloperidol (Haldol), mesoridazine (Serentil), pimozide (Orap), or thioridazine (Mellaril).

This list is not complete and other drugs may interact with chlorpheniramine, hydrocodone, and phenylephrine. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about chlorpheniramine, hydrocodone, 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.

Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

Copyright 1996-2012 Cerner Multum, Inc. Version: 3.02. Revision date: 12/15/2010.

Your use of the content provided in this service indicates that you have read,understood and agree to the End-User License Agreement,which can be accessed by clicking on this link.

Need help identifying pills and medications?
Use the pill finder tool on RxList.