| Placebo (n = 290) | TI (n = 1991) | Non-placebo comparator (n = 1363) |
Cough | 19.7% | 25.6% | 5.4% |
Throat pain or irritation | 3.8% | 4.4% | 0.9% |
Headache | 2.8% | 3.1% | 1.8% |
Diarrhea | 1.4% | 2.7% | 2.2% |
Productive cough | 1.0% | 2.2% | 0.9% |
Fatigue | 0.7% | 2.0% | 0.6% |
Nausea | 0.3% | 2.0% | 1.0% |