What are the side effects of nalbuphine HCl (hydrochloride)?

The following side effects associated with using nalbuphine hydrochloride (HCl) require prompt attention from your doctor: weak or shallow breathing; fast or slow heart rate; cold, clammy skin; confusion, hallucinations, or unusual thoughts or behavior; severe weakness or dizziness; or feeling that you might pass out or actually fainting. Other side effects are generally minor and only require medical attention if they persist or disrupt your daily life.

These include lightheadedness or drowsiness; upset stomach, nausea, stomach cramps, or vomiting; dry mouth or bitter taste; headache; itchy, burning skin or warmth, tingling, or redness under your skin; confusion or hallucinations; a feeling of heaviness; unusual weakness; sweating; and trouble with speech or vision. If you experience an allergic reaction characterized by difficulty breathing, facial swelling, itchy rash, or hives, seek immediate emergency care.

Continue Learning about Opiate Agonists

Who is at risk for breathing problems caused by opioid medication?
Travis M. Hendry, MDTravis M. Hendry, MD
Opioid therapy can decrease your breathing, especially during sleep. This problem, called respir...
More Answers
How do opioids relieve pain?
James P. Ioli, DPMJames P. Ioli, DPM
Prescription drugs that contain opioids (opioid analgesics) such as codeine are useful for pain ...
More Answers
What medication should I avoid if I have a bowel obstruction?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
Do not take the painkiller Avinza (morphine) if you have paralytic ileus, a partial or complete bowe...
More Answers
What are opioid medications?
Travis M. Hendry, MDTravis M. Hendry, MD
Opioid medications are strong prescription medications that change the way your brain handles pain s...
More Answers

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.