Adverse events
| All adverse events | Hydroxychloroquine and azithromycin | Placebo | |
| Cardiac disorders | |||
| Prolonged QTc | 11 | 4 | 7 |
| Chest pain | 7 | 3 | 4 |
| Gastrointestinal disorders | |||
| Diarrhoea | 15 | 12 | 3 |
| Vomiting | 4 | 2 | 2 |
| Nausea | 17 | 11 | 6 |
| Abdominal pain | 14 | 7 | 7 |
| Nervous system and psychiatric disorders | |||
| Headache | 8 | 3 | 5 |
| Dizziness | 13 | 10 | 3 |
| Respiratory, thoracic and mediastinal disorders | |||
| Bronchospasm | 5 | 3 | 2 |
| Skin and subcutaneous tissue disorders | |||
| Itching | 3 | 3 | 0 |
| Rash | |||
| Vascular disorders | |||
| Bleeding | 2 | 2 | 0 |
| Any serious adverse events | 2 | 0 | 2 |
Data are presented as n. QTc: corrected QT interval.