Nalex-DH Side Effects

Generic Name: hydrocodone / phenylephrine

Note: This page contains side effects data for the generic drug hydrocodone / phenylephrine. It is possible that some of the dosage forms included below may not apply to the brand name Nalex-DH.

For the Consumer

Applies to hydrocodone / phenylephrine: liquid, syrup

Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Dizziness; drowsiness, excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; tremor.

For Healthcare Professionals

Applies to hydrocodone / phenylephrine: oral liquid, oral syrup

Nervous system

Nervous system side effects have included drowsiness, nervousness, insomnia, and headache.^[Ref]

Gastrointestinal

Gastrointestinal side effects have included nausea and constipation.^[Ref]

Respiratory

Respiratory side effects have included respiratory depression.^[Ref]

Psychiatric

Psychiatric side effects have included addiction.^[Ref]

General

General side effects have included lassitude,and giddiness,^[Ref]

Genitourinary

Genitourinary side effects have included urinary retention in patients with prostatic hypertrophy.^[Ref]

It is possible that some side effects of Nalex-DH may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

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