Pain Management in Green Iguanas
Reptile · Iguana iguana · typical adult weight 1.00–5.00 kg
4 cited drugs treat Pain Management in green iguanas: Butorphanol, Ketoprofen, Meloxicam, Morphine.
Multimodal analgesia spanning NSAIDs, opioids, local anaesthetics, NMDA antagonists (ketamine), α2 agonists, and adjuncts. Species safety matters: NSAIDs are unsafe in some reptiles, opioid receptor distributions differ in birds, and rabbits tolerate buprenorphine particularly well.
The overview above describes Pain Management across species; the citations below are the ExoticRx dose rules scoped to green iguanas — a reference list, not new species-specific clinical guidance.
Butorphanol(Torbugesic, Torbutrol)
Analgesic| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| IM | 1.5 mg/kg | not stated in the cited source | Analgesia (antinociception) - electro-stimulation model; PROVIDED analgesia | Weak | Carpenter JW, Klaphake E, Gibbons PM, et al. Reptile formulary. In: Divers SJ, Stahl SJ, eds. Mader's Reptile and Amphibian Medicine and Surgery, 3rd ed., Elsevier, St. Louis, MO; 2019:1191-1211. / (green-iguana-specific row, p.252) 131. Fleming GJ, Robertson SA. Assessments of thermal antinociceptive effects of butorphanol and human observer effect on quantitative evaluation of analgesia in green iguanas (Iguana iguana). Am J Vet Res. 2012;73:1507-1511. — Verified against Carpenter's Exotic Animal Formulary, 6th Ed, p.236 (2026-08-01). — Carpenter's Exotic Animal Formulary 6th ed, Table 4.5 (Chemical Restraint/Anesthetic Agents Used in Reptiles.a). Located 2026-08-05: the only table covering this species in which the drug's own row prints this dose. The copy held is an ebook conversion with no printed page numbers, so the table is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Mader's Reptile and Amphibian Medicine and Surgery (Divers & Stahl) — ISBN 9780323482530, https://openlibrary.org/isbn/9780323482530 |
| IM | 8 mg/kg | not stated in the cited source | Analgesia (antinociception) - electro-stimulation model; PROVIDED analgesia; adverse effect: delayed righting reflex | Weak | Greenacre CB, Schumacher JP, Talke G, et al. Comparative antinociception of morphine, butorphanol, and buprenorphine versus saline in the green iguana, Iguana iguana, using electrostimulation. J Herp Med Surg. 2006;16:88-92. doi:10.5818/1529-9651.16.3.88 — Verified against Mader's Reptile and Amphibian Medicine and Surgery, 3rd Ed, p.570 (2026-08-01). — SOURCE EDITION: Mader's Reptile and Amphibian Medicine and Surgery (Divers & Stahl) — ISBN 9780323482530, https://openlibrary.org/isbn/9780323482530 |
Ketoprofen(Ketofen)
Analgesic| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| IM | 2 mg/kg | single dose | NSAID (analgesia/anti-inflammatory) - pharmacokinetic parameters reported | Weak | Tuttle AD, Papich M, Lewbart GA, et al. Pharmacokinetics of ketoprofen in the green iguana (Iguana iguana) following single intravenous and intramuscular injections. J Zoo Wildl Med. 2006;37:567-570. doi:10.1638/06-029.1 — Verified against Carpenter's Exotic Animal Formulary, 6th Ed, p.253 (2026-08-01). — Carpenter's Exotic Animal Formulary 6th ed, Table 4.6 (Analgesic (Including Antiinflammatory) Agents Used in Reptiles). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Saunders Handbook of Veterinary Drugs — ISBN 9780323244855, https://openlibrary.org/isbn/9780323244855; Invertebrate Medicine — ISBN 9781119569435, https://openlibrary.org/isbn/9781119569435 |
| IV | 2 mg/kg | single dose | NSAID (analgesia/anti-inflammatory) - pharmacokinetic parameters reported | Weak | A critical review on the pharmacodynamics and pharmacokinetics of non-steroidal anti-inflammatory drugs and opioid drugs used in reptiles. Vet Anim Sci. 2022;17:100267. PMID: 36043206; PMCID: PMC9420515; DOI: 10.1016/j.vas.2022.100267. (Table 8; original data cited as Tuttle et al., 2006) URL: https://pmc.ncbi.nlm.nih.gov/articles/PMC9420515/ |
Meloxicam(Metacam)
Analgesic| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| IV | 0.2 mg/kg | q24h | Analgesia / antiinflammatory - PK-derived (green iguana), source prints no evidence of efficacy | Weak | Divers SJ, Papich MG, McBride M, et al. Pharmacokinetics of meloxicam following intravenous and oral administration in green iguanas (Iguana iguana). Am J Vet Res. 2010;71:1277-1283. doi:10.2460/ajvr.71.11.1277 — Verified against Carpenter's Exotic Animal Formulary, 6th Ed, p.254 (2026-08-01). — Carpenter's Exotic Animal Formulary 6th ed, Table 4.6 (Analgesic (Including Antiinflammatory) Agents Used in Reptiles). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Saunders Handbook of Veterinary Drugs — ISBN 9780323244855, https://openlibrary.org/isbn/9780323244855 |
| IV | 0.2 mg/kg | single dose | NSAID (analgesia/anti-inflammatory) - pharmacokinetic parameters reported | Weak | Divers SJ, Papich MG, McBride M, et al. Pharmacokinetics of meloxicam following intravenous and oral administration in green iguanas (Iguana iguana). Am J Vet Res. 2010;71:1277-1283. doi:10.2460/ajvr.71.11.1277 — Verified against Carpenter's Exotic Animal Formulary, 6th Ed, p.254 (2026-08-01). — Carpenter's Exotic Animal Formulary 6th ed, Table 4.6 (Analgesic (Including Antiinflammatory) Agents Used in Reptiles). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Saunders Handbook of Veterinary Drugs — ISBN 9780323244855, https://openlibrary.org/isbn/9780323244855 |
| PO | 0.2 mg/kg | single dose | NSAID (analgesia/anti-inflammatory) - pharmacokinetic parameters reported | Weak | Divers SJ, Papich MG, McBride M, et al. Pharmacokinetics of meloxicam following intravenous and oral administration in green iguanas (Iguana iguana). Am J Vet Res. 2010;71:1277-1283. doi:10.2460/ajvr.71.11.1277 — Verified against Carpenter's Exotic Animal Formulary, 6th Ed, p.254 (2026-08-01). — Carpenter's Exotic Animal Formulary 6th ed, Table 4.6 (Analgesic (Including Antiinflammatory) Agents Used in Reptiles). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Saunders Handbook of Veterinary Drugs — ISBN 9780323244855, https://openlibrary.org/isbn/9780323244855 |
| PO | 0.2 mg/kg | q24h | Antiinflammatory/analgesia - PK-derived, source prints Green iguanas/PK, no evidence of efficacy | Weak | Divers SJ, Papich MG, McBride M, et al. Pharmacokinetics of meloxicam following intravenous and oral administration in green iguanas (Iguana iguana). Am J Vet Res. 2010;71:1277-1283. doi:10.2460/ajvr.71.11.1277 — Verified against Carpenter's Exotic Animal Formulary, 6th Ed, p.254 (2026-08-01). — Carpenter's Exotic Animal Formulary 6th ed, Table 4.6 (Analgesic (Including Antiinflammatory) Agents Used in Reptiles). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Saunders Handbook of Veterinary Drugs — ISBN 9780323244855, https://openlibrary.org/isbn/9780323244855 |
Morphine
Analgesic| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| IM | 1 mg/kg | not stated in the cited source | Analgesia (antinociception) - electro-stimulation model; PROVIDED analgesia | Weak | A critical review on the pharmacodynamics and pharmacokinetics of non-steroidal anti-inflammatory drugs and opioid drugs used in reptiles. Vet Anim Sci. 2022;17:100267. PMID: 36043206; PMCID: PMC9420515; DOI: 10.1016/j.vas.2022.100267. (Table 7; original data cited as Greenacre et al., 2006) URL: https://pmc.ncbi.nlm.nih.gov/articles/PMC9420515/ |
Other conditions in Green Iguanas
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice. Verify against current literature before clinical use.