Overview of serious adverse events
| Lithium group | Placebo group | |
| Gastrointestinal | ||
| Gastric tube placement | 29 | 23 |
| Other | 0 | 5 |
| Respiratory | ||
| Respiratory insufficiency | 13 | 13 |
| Pneumonia | 2 | 7 |
| Pulmonary embolism | 2 | 1 |
| Other | 2 | 4 |
| Cardiac complaints | 1 | 1 |
| Dehydration | 2 | 0 |
| Injury | 1 | 1 |
| Elective surgery | 1 | 2 |
| Agitation/delirium | 0 | 1 |
| Severe disease progression | 1 | 0 |
| Hospital admission due to neuropathic pain | 0 | 1 |
| Ischaemic stroke | 1 | 0 |
| Septic arthritis | 1 | 0 |
| Allergic reaction to antibiotics | 1 | 0 |
Data are numbers of patients with a certain event.