Opioid Analgesics Commonly Used in Animals
Opioid analgesic doses in Small Lab Animals
| Drug | Mouse | Rat | Guinea Pig | Rabbit | Ferret |
| Buprenorphine | 0.05-0.1 mg/Kg sc q12hrs | 0.05-0.1 mg/Kg sc q12hrs, or 0.1-0.25 mg/Kg po q12hrs |
0.05 mg/Kg sc q 12hrs | 0.05-0.1 mg/Kg sc q12hrs | 0.01-0.03 mg/Kg iv,im,sc q12hrs |
| Butorphanol | 1-5 mg/Kg sc q12hrs | 2 mg/Kg q 4hrs | 0.1-0.5 mg/Kg iv q4hrs | 0.4 mg/Kg im q 6-8hrs | |
| Methadone | 5 mg/Kg q12hr | 1.3 mg/Kg q12hr | 3-6 mg/Kg q12hr | 5 mg/Kg q12hr |
Opioid analgesic doses in Large Lab Animals
| Drug | Pig | Sheep | Primate | Dog | Cat |
| Buprenorphine | 0.005-0.02 mg/Kg im,iv q6-12hrs | 0.005-0.01 mg/Kg im,iv q4hrs | 0.005-0.01 mg/Kg im,iv q6-12hrs | 0.005-0.02 mg/Kg im,iv,sc q6-12hrs | 0.005-0.01 mg/Kg iv,sc q8-12hrs |
| Butorphanol | 0.01 mg/Kg q4hrs | 0.2-0.4 mg/Kg im,sc q4hrs | 0.4 mg/Kg sc q4hrs | ||
| Methadone | 0.3 mg/Kg | 0.1-1.0 mg/Kg im,sc,po q8-12hrs | 0.25mg/Kg sc q12hr | 0.1mg/Kg sc q12hr |
Abbreviations:
- po - per os (orally)
- sc - subcutaneous injection
- im - intramuscular injection
- q - every
- q12hr - every 12 hours
Some of this data is European. Not every drug is available in every dosage format in the US.