Histex-AC Side Effects

Generic name: codeine / phenylephrine / triprolidine

Note: This document contains side effect information about codeine / phenylephrine / triprolidine. Some dosage forms listed on this page may not apply to the brand name Histex-AC.

Applies to codeine / phenylephrine / triprolidine: oral liquid.

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.

Like other narcotic medications, codeine can slow your breathing. Death may occur if breathing becomes too weak.

Stop taking this medicine and call your doctor at once if you have:

• noisy breathing, sighing, shallow breathing;

• a slow heart rate or weak pulse;

• nervousness, trouble sleeping;

• severe headache or dizziness, ringing in your ears;

• severe constipation; or

• little or no urination.

Serious side effects may be more likely in older adults and those who are overweight, malnourished, or debilitated.

Common side effects may include:

• dizziness, drowsiness, tired feeling;

• dry mouth, nose, or throat;

• blurred vision;

• nausea, vomiting, constipation; or

• sleep problems (insomnia).

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 codeine/phenylephrine/triprolidine: oral liquid.

General

The most commonly occurring side effects include dry mouth, dizziness, sleepiness, and disturbed coordination.^[Ref]

Cardiovascular

Frequency not reported: Hypotension, palpitations, tachycardia, extrasystoles

Gastrointestinal

Frequency not reported: Dry mouth, dry throat, epigastric distress, anorexia, nausea, vomiting, diarrhea, constipation

Genitourinary

Frequency not reported: Urinary frequency, difficult urination, urinary retention

Psychiatric

Frequency not reported: Confusion, restlessness, excitation, anxiety, nervousness, irritability, insomnia, euphoria, hysteria, hallucination

Ocular

Frequency not reported: Blurred vision, diplopia

Other

Frequency not reported: Chills, fatigue, vertigo, tinnitus

Dermatologic

Frequency not reported: Drug rash, photosensitivity, excessive perspiration, urticaria

Nervous system

Frequency not reported: Sedation, sleepiness, dizziness, disturbed coordination, tremor, paresthesias, neuritis, convulsions, CNS depression

Respiratory

Frequency not reported: Nasal dryness, thickening of bronchial secretions, tightness of chest and wheezing, nasal stuffiness, respiratory depression

Further information

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.

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