Nalex AC Side Effects
Generic Name: brompheniramine / codeine
Note: This document contains side effect information about brompheniramine / codeine. Some of the dosage forms listed on this page may not apply to the brand name Nalex AC.
For the Consumer
Codeine can slow or stop your breathing, and may be habit-forming. MISUSE OF THIS MEDICINE CAN CAUSE ADDICTION, OVERDOSE, OR DEATH, especially in a child or other person using the medicine without a prescription.
This medicine is not for use in anyone under 18.
Fatal side effects can occur if you use this medicine with alcohol, or with other drugs that cause drowsiness or slow your breathing.
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Like other narcotic medications, codeine can slow your breathing. Death may occur if breathing becomes too weak.
A person caring for you should seek emergency medical attention if you have slow breathing with long pauses, blue colored lips, or if you are hard to wake up.
Stop using brompheniramine and codeine and call your doctor at once if you have:
noisy breathing, sighing, shallow breathing;
a slow heart rate or weak pulse;
a light-headed feeling, like you might pass out;
easy bruising or bleeding;
painful or difficult urination;
confusion, hallucinations, ringing in your ears; or
a seizure (convulsions).
Serious side effects may be more likely in older adults and those who are overweight, malnourished, or debilitated.
Common side effects may include:
blurred vision; or
dry mouth, nose, or throat.
Side effects such as dry mouth, constipation, and confusion may be more likely in older adults.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.
For Healthcare Professionals
Applies to brompheniramine / codeine: oral syrup
Nervous System side effects have included sedation, sleepiness, dizziness, disturbed coordination, fatigue, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, euphoria, paresthesias, vertigo, tinnitus, acute labyrinthitis, hysteria, neuritis, and convulsions.[Ref]
Respiratory side effects have included thickening of bronchial secretions, dryness of mouth, nose, and throat, nasal stuffiness, tightness of the chest and wheezing.[Ref]
Ocular side effects have included blurred vision and diplopia.[Ref]
General side effects have included excessive perspiration and chills.[Ref]
1. "Product Information. EndaCof-AC (brompheniramine-codeine)." Larken Laboratories Inc, Madison, MS.
More about Nalex AC (brompheniramine / codeine)
- During Pregnancy
- Dosage Information
- Drug Interactions
- En Español
- Drug class: upper respiratory combinations
- Other brands
Related treatment guides
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.