Secondary symptoms following each of the 720 administered ketone drinks
| Symptom | No of participants | Events* (mild/moderate) |
| Gastrointestinal discomfort | 8 | 20/720 (10/10) |
| Loss of appetite | 5 | 12/720 (9/3) |
| Headache | 6 | 12/720 (8/4) |
*Some participants recorded the same symptom more than once, so the occurrence was expressed relative to 720, the total number of drinks consumed (24×30 drinks).