ExoticRx · exoticrx.com/drugs/iohexol
US brand names:Omnipaque
Iohexol is dosed at 5–20 ml/kg PO not printed (single contrast study) in bearded dragons, per 63. 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. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.273 — Carpenter's Exotic Animal Formulary 6th ed, Table 4.11 (Miscellaneous Agents Used in Reptiles). Verify against current literature before clinical use.
Non-ionic, low-osmolar iodinated contrast agent. Attenuates X-rays proportional to iodine concentration, providing contrast in vessels, urinary tract, and CNS.
Nephrotoxic — ensure hydration. Rare anaphylactoid reactions. Safe if aspirated or if GI perforation (unlike barium). Can be used for myelography (intrathecal). Warm to body temperature.
Species references:All Ball Python drugsAll Bearded Dragon drugsAll Cat (Domestic) drugsAll Cockatiel drugsAll Dog (Domestic) drugs
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
A dog/cat sample is shown here. Cited dosing for all 5 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.
| Species | Route | Dose | Frequency | Evidence | Source |
|---|---|---|---|---|---|
| Cat (Domestic) | IV | Monitor for anaphylactoid reactions | Single administration | Strong | Caine A, Ma MH, Herrtage M, Sparks T, Genain MA. Measurements and Visibility of the Pancreatic Ducts on Computed Tomography in 78 Cats Without Clinical Evidence of Pancreatitis. Animals (Basel). 2025;15(19):2857. doi:10.3390/ani15192857 — Materials and Methods: "Images were acquired prior to and post administration of iodinated intravenous contrast media (2 […]" Corroborating feline CT-angiography protocol at the equivalent iodine dose: Dekkers MM, Devriendt N, de Rooster H, Saunders J, Stock E. Anatomical variations in the tributaries of the normal feline extrahepatic portal system: evaluation with CT angiography. J Feline Med Surg. 2025;27(9). doi:10.1177/1098612X251368447 — "Intravenous contrast consisted of a non-ionic iodinated contrast agent (600-700 mg I/kg body weight)." These are published feline CT contrast protocols, i.e. what was administered in a study, not formulary dosing recommendations. Drug monograph background: Plumb's Veterinary Drug Handbook, 10th ed (2023), Iohexol, printed p.687-688. |
| Dog (Domestic) |
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View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.
| IV |
| Ensure hydration |
| Single administration for study |
| Strong |
| Plumb's Veterinary Drug Handbook, 10th ed (2023) — Plumb's 10th ed printed p.687, Iohexol monograph spanning p.687-688.Compilation only — we have not located an independent source that prints this figure. |