ExoticRx · exoticrx.com/drugs/fentanyl
Duragesic(patch), Sublimaze(injectable)
Potent synthetic mu-opioid receptor agonist (50-100x more potent than morphine). Rapid onset, short duration IV. Transdermal provides sustained release over 72 hours.
Potent respiratory depressant. Transdermal patch: 12-24 hour onset, variable absorption (shave area, do not cut patches). Controlled substance (Schedule II). Bradycardia. Fever increases absorption rate.
Species references:All Cat (Domestic) drugsAll Dog (Domestic) drugs
Controlled substance
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
Fentanyl CRI dose rule from the ExoticRx formulary. Verify against current literature before clinical use; CRI rates differ from bolus dosing and route, dilution, and monitoring matter. Sign in for the complete per-species CRI protocol set.
| Species | Route | Rate | Indication | Evidence | Source |
|---|---|---|---|---|---|
| Dog (Domestic) | IV | 2–10 mcg/kg/hCRI | Intraoperative analgesia, CRI | Strong | Plumb's Veterinary Drug Handbook, 9th Ed |
Intraoperative analgesia, CRI
A dog/cat sample is shown here. Cited dosing for all 2 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.
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View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.