Adverse events in the ginseng and placebo groups
| Adverse events occurring in ≥2 participants | Ginseng (n=82) n (%) | Placebo (n=86) n (%) |
| Upper respiratory tract infection | 19 (23.2) | 12 (14) |
| Headache | 7 (8.5) | 9 (10.5) |
| Back pain | 6 (7.3) | 0 |
| Cystitis | 3 (3.7) | 0 |
| Loss of balance | 2 (2.4) | 0 |
| Ear infection | 2 (2.4) | 0 |
| Sinusitis | 2 (2.4) | 0 |
| Anxiety | 2 (2.4) | 0 |
| Cough | 0 | 8 (9.3) |
| Epistaxis | 0 | 5 (5.8) |
| Insomnia | 0 | 3 (3.5) |
| Hearing loss | 0 | 2 (2.3) |
| Leg cramps | 0 | 2 (2.3) |
| Conjunctivitis | 0 | 2 (2.3) |