Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.
The safety of Hydrocodone Bitartrate Extended-Release Capsules was evaluated in a total of 1,148 subjects in Phase 3 clinical trials.
Table 2 lists the most frequently occurring adverse reactions occurring at a greater frequency than placebo from the placebo-controlled trial in subjects with moderate-to-severe chronic lower back pain.
Table 2. Treatment-Emergent Adverse Events in ≥2% of Subjects During the Open-Label Titration Period and/or the Double-Blind Treatment Period, by Preferred Term — Number (%) of Treated Subjects (Placebo-Controlled Study in Opioid-Experienced Subjects with Moderate-to-Severe Chronic Lower Back Pain) | Open-Label Titration Period | Double-Blind Treatment Period |
|---|
| Hydrocodone Bitartrate Extended-Release Capsules | Hydrocodone Bitartrate Extended-Release Capsules | Placebo |
|---|
| Preferred Term | (N = 510) | (n = 151) | (n = 151) |
|---|
| Constipation | 56 (11%) | 12 (8%) | 0 (0%) |
| Nausea | 50 (10%) | 11 (7%) | 5 (3%) |
| Somnolence | 24 (5%) | 1 (1%) | 0 (0%) |
| Fatigue | 21 (4%) | 1 (1%) | 2 (1%) |
| Headache | 19 (4%) | 0 (0%) | 2 (1%) |
| Dizziness | 17 (3%) | 3 (2%) | 1 (1%) |
| Dry mouth | 16 (3%) | 0 (0%) | 0 (0%) |
| Vomiting | 14 (3%) | 7 (5%) | 1 (1%) |
| Pruritus | 13 (3%) | 0 (0%) | 0 (0%) |
| Abdominal pain | 8 (2%) | 4 (3%) | 0 (0%) |
| Edema peripheral | 7 (1%) | 4 (3%) | 0 (0%) |
| Upper respiratory tract infection | 7 (1%) | 5 (3%) | 1 (1%) |
| Muscle spasms | 6 (1%) | 4 (3%) | 2 (1%) |
| Urinary tract infection | 4 (1%) | 8 (5%) | 3 (2%) |
| Back pain | 4 (1%) | 6 (4%) | 5 (3%) |
| | | |
| Tremor | 1 (0%) | 4 (3%) | 1 (1%) |
The common (≥1% to <10%) adverse drug reactions reported at least once by subjects treated with Hydrocodone Bitartrate Extended-Release Capsules in the Phase 3 clinical trials and not represented in Table 2 were:
Gastrointestinal Disorders: abdominal discomfort, abdominal pain, gastroesophageal reflux disease
General Disorders and Administration Site Conditions: non-cardiac chest pain, pain, peripheral edema, pyrexia
Injury, Poisoning and Procedural Complications: contusion, fall, foot fracture, joint injury, joint sprain, muscle strain, skin laceration
Investigations: increased blood cholesterol, increased gamma-glutamyltransferase
Metabolism and Nutrition Disorders: dehydration, hypokalemia
Musculoskeletal and Connective Tissue Disorders: arthralgia, musculoskeletal pain, myalgia, neck pain, osteoarthritis, pain in extremity
Nervous System Disorders: lethargy, migraine, paresthesia
Psychiatric Disorders: anxiety, depression, insomnia
Respiratory, Thoracic, and Mediastinal Disorders: cough, dyspnea
Skin and Subcutaneous Tissue Disorders: hyperhidrosis, night sweats, rash
Vascular Disorders: hot flush