| ANSES | The French Agency for Food, Environmental and Occupational Health & Safety |
| BP | Blood pressure |
| CA | Citrus aurantium |
| CI | Confidence interval |
| DBP | Diastolic blood pressure |
| HCL | Hydrochloride |
| HR | Heart rate |
| E | Epinephrine |
| EC | European Commission |
| EE | Energy expenditure |
| EU | European Union |
| FDA | U.S. Food and Drug Administration |
| MD | Mean difference |
| NA | Noradrenaline |
| NE | Norepinephrine |
| NK | Not known |
| mmHg | Millimeters of mercury |
| m-synephrine | Meta-synephrine (phenylephrine) |
| p-synephrine | Para-synephrine |
| QT | Measurement made on electrocardiogram. It is calculated as the time from the start of the Q wave to the end of the T wave. |
| RASFF | Rapid Alert System for Food and Feed |
| RCT | Randomized clinical trial |
| RER | Respiratory exchange ratio |
| SBP | Systolic blood pressure |
| SD | Standard deviation |
| VO2 | Oxygen consumption |
| 4-HMP | Methyl-synephrine HCl, oxiflorine |