The following adverse reactions have been identified during post approval use of hydrocodone and acetaminophen tablets and oral solution. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
The most frequently reported adverse reactions are light-headedness, dizziness, sedation, nausea and vomiting. Other adverse reactions include:
Cardio-Renal:Bradycardia, cardiac arrest, circulatory collapse, renal toxicity, renal tubular necrosis, hypotension.
Central Nervous System/Psychiatric:Anxiety, dizziness, drowsiness, dysphoria, euphoria, fear, general malaise, impairment of mental and physical performance, lethargy, lightheadedness, mental clouding, mood changes, psychological dependence, sedation, somnolence progressing to stupor or coma.
Endocrine:Hypoglycemic coma.
Gastrointestinal System:Abdominal pain, constipation, gastric distress, heartburn, hepatic necrosis, hepatitis, occult blood loss, nausea, peptic ulcer, and vomiting.
Genitourinary System:Spasm of vesical sphincters, ureteral spasm, and urinary retention.
Hematologic:Agranulocytosis, hemolytic anemia, iron deficiency anemia, prolonged bleeding time, thrombocytopenia.
Hypersensitivity:Allergic reactions.
Musculoskeletal:Skeletal muscle flaccidity.
Respiratory Depression:Acute airway obstruction, apnea, dose-related respiratory depression [see
OVERDOSAGE], shortness of breath.
Special Senses:Cases of hearing impairment or permanent loss have been reported predominantly in patients with chronic overdose.
Skin:Cold and clammy skin, diaphoresis, pruritus, rash.
- Serotonin syndrome: Cases of serotonin syndrome, a potentially life-threatening condition, have been reported during concomitant use of opioids with serotonergic drugs.
- Adrenal insufficiency: Cases of adrenal insufficiency have been reported with opioid use, more often following greater than one month of use.
- Anaphylaxis: Anaphylaxis has been reported with ingredients contained in hydrocodone and acetaminophen tablets.
- Androgen deficiency: Cases of androgen deficiency have occurred with chronic use of opioids [see
CLINICAL PHARMACOLOGY].
To report SUSPECTED ADVERSE REACTIONS, contact Allucent at 1-866-511-6754 or FDA at 1-800-FDA-1088 or
www.fda.gov/medwatch.