Codeprex

Generic name:chlorpheniramine and codeine [ klor-fen-near-A-mean-and-ko-deen ]
Drug class:Upper respiratory combinations

Medically reviewed by Drugs.com. Last updated on Jul 2, 2021.

What is Codeprex?

Chlorpheniramine is an antihistamine. It blocks the effects of histamine in the body. Chlorpheniramine prevents sneezing; itchy, watery eyes and nose; and other symptoms of allergies and colds. Codeprex is a combination of chlorpheniramine and codeine.

Codeprex is used to treat nasal congestion and coughs associated with allergies and the common cold.

Codeprex may also be used for purposes other than those listed in this medication guide.

Warnings

Use caution when driving, operating machinery, or performing other hazardous activities. Codeprex may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities. Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while taking Codeprex.

Do not take more of this medication than is recommended. If your symptoms do not improve, or if they worsen, talk to your doctor.

Codeine may be habit forming. Physical and/or psychological dependence can occur, and withdrawal effects are possible if the medication is stopped suddenly after prolonged or high-dose treatment. Do not stop taking Codeprex suddenly without first talking to your doctor if you have been taking it continuously for more than 5 to 7 days. Your doctor may want to gradually reduce the dose.

Before taking this medicine

Do not take Codeprex without first talking to your doctor if you have

• an allergy to codeine, morphine, or other narcotic medications;

• kidney disease;
• liver disease;

• diabetes;

• glaucoma;

• a head injury;

• heart disease or high blood pressure;

• intestinal problems;

• Addison's disease;

• thyroid disease;

• asthma or lung disease; or

• difficulty urinating or have an enlarged prostate.

You may not be able to take Codeprex, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.

Codeprex is in the FDA pregnancy category C. This means that it is not known whether it will be harmful to an unborn baby. Do not take Codeprex without first talking to your doctor if you are pregnant or could become pregnant during treatment. It is not known whether Codeprex passes into breast milk. Do not take this medication without first talking to your doctor if you are breast-feeding a baby. If you are over 60 years of age, you may be more likely to experience side effects from Codeprex. Your doctor may prescribe a lower dose of the medication.

How should I take Codeprex?

Take Codeprex exactly as