| 3 mg | Human | human | nasal | Not reported | Randomized trial in people · n = 68 | Matsuhisa 2020 |
| 3 mg | Human | human | nasal | Not reported | Randomized trial in people · n = 66 | Suico 2020 |
| low rate 20 mcg/hour or high rate 80 mcg/hour | Human | human | continuous subcutaneous infusion | 4 weeks | Randomized trial in people · n = 49 | Pettus 2020 |
| 100, 200 and 300 µg | Human | human | subcutaneous | Not reported | Randomized trial in people · n = 8 | Ranjan 2016 |
| 300 µg | Human | human | subcutaneous | Not reported | Randomized trial in people · n = 8 | Ranjan 2016 |
| 0.05 mg/kg | Human | human | intramuscular | Not reported | Randomized trial in people · n = 188 | Mortensson 1984 |
| 1 mg | Human | human | subcutaneous | Not reported | Randomized trial in people · n = 161 | Christiansen 2021 |
| 0.5 mg | Human | human | intravenous | Not reported | Randomized trial in people · n = 103 | Stone 1988 |
| 1 mg | Human | human | intravenous | Not reported | Randomized trial in people · n = 90 | Cutler 1995 |
| 3 mg | Human | human | intranasal | Not reported | Randomized trial in people · n = 75 | Rickels 2016 |
| 0.03 mg/kg | Human | human | intravenous | Not reported | Randomized trial in people · n = 46 | Wilber 2000 |
| 1 mg | Human | human | subcutaneous | Not reported | Randomized trial in people · n = 40 | Junaidi 2024 |
| 1 mg | Human | human | intravenous | Not reported | Randomized trial in people · n = 40 | Eisenstat 2002 |
| 1 mg bolus followed by 6 mg/24 hr | Human | human | bolus injection followed by infusion | three days | Randomized trial in people · n = 22 | Kronborg 1980 |
| 1 mg | Human | human | intravenous | Not reported | Randomized trial in people · n = 22 | Murthy 2000 |
| 150 μg | Human | human | subcutaneous | Not reported | Randomized trial in people · n = 15 | Rickels 2018 |
| 1 mg | Human | human | intramuscular | Not reported | Randomized trial in people · n = 14 | Carstens 1998 |
| 0.5 mg | Human | human | subcutaneous | Not reported | Randomized trial in people · n = 11 | Stenninger 1993 |
| 100 µg | Human | human | subcutaneous | Not reported | Randomized trial in people · n = 10 | Ranjan 2017 |
| 500 µg | Human | human | subcutaneous | Not reported | Randomized trial in people · n = 10 | Ranjan 2017 |
| 0.25, 0.5, and 1 mg | Human | human | intravenous | Not reported | Randomized trial in people · n = 10 | Colon 1999 |
| 0.5 mg | Human | human | intravenous | Not reported | Randomized trial in people · n = 10 | Colon 1999 |
| 1 mg | Human | human | intravenous | Not reported | Randomized trial in people · n = 10 | Colon 1999 |
| 2 mg | Human | human | nebulized | Not reported | Randomized trial in people · n = 10 | Melanson 1998 |
| 150 μg | Human | human | subcutaneous | 120 minutes observation | Randomized trial in people · n = 10 | Laugesen 2021 |
| 50 ng/kg/min | Human | human | infusion | Not reported | Randomized trial in people · n = 8 | Salem 2016 |
| 100 µg | Human | human | subcutaneous | Not reported | Randomized trial in people · n = 8 | Ranjan 2016 |
| 200 µg | Human | human | subcutaneous | Not reported | Randomized trial in people · n = 8 | Ranjan 2016 |
| 4.8 microg kg(-1) bolus followed by 9.6 microg kg(-1) h(-1) infusion | Human | human | Not reported | 1 hour | Randomized trial in people · n = 8 | Chang 2003 |
| 377 ng/min during 2 min followed by 11 min without infusion | Human | human | intravenous | Not reported | Randomized trial in people · n = 7 | Paolisso 1990 |
| 2 mg | Human | human | intranasal | Not reported | Randomized trial in people | Sherr 2016 |
| 0.5 or 1.0 mg | Human | human | subcutaneous | Not reported | Randomized trial in people | Hövelmann 2018 |
| 1 mg | Human | human | subcutaneous | Not reported | Randomized trial in people | Pieber 2021 |
| 1 mg | Human | human | intramuscular | Not reported | Randomized trial in people | Patrick 1990 |
| 12.5 or 25 ng/kg/min | Human | human | infusion | 72 hours | Randomized trial in people | Vega 2021 |
| 150 µg | Human | human | subcutaneous | 12 weeks | Randomized trial in people | Aronson 2023 |
| 3 mg | Human | human | nasal | Not reported | Trial in people without random groups · n = 69 | Seaquist 2018 |
| 2 mg | Human | human | Not reported | Not reported | Trial in people without random groups · n = 60 | Harned 1976 |
| 2 mg | Human | human | intravenous | Not reported | Trial in people without random groups · n = 41 | Evans 1979 |
| 50 micrograms/kg | Human | human | intravenous | Not reported | Trial in people without random groups · n = 37 | Markiewicz 1982 |