singapore rabbits

ivermectin for rabbits, when it makes sense

updated 19 May 2026

Singapore sits at 28 to 32°C with 70 to 90% humidity throughout the year. these conditions help external parasites establish and persist more easily than in temperate climates. rabbits living in HDB flats are not automatically protected. ear mites and fur mites can arrive on hay bales from overseas suppliers, on second-hand cages bought from other owners, or through brief contact with an infested animal at a grooming session or adoption event. when your exotic vet finds a mite infestation and mentions ivermectin, it pays to understand exactly what the drug does. it targets specific parasites, not all parasites. and rabbits process this medication very differently from cats and dogs, which matters a great deal when it comes to calculating a safe dose.

what ivermectin is and how it works

ivermectin belongs to a group of compounds called avermectins. it works by binding to ion channels in invertebrate nerve and muscle cells, causing paralysis and death in targeted parasites. mammals have similar channels, but the blood-brain barrier normally prevents the drug from reaching the brain in harmful concentrations. in rabbits, this barrier is less robust than in dogs or cats. this is a key reason why overdose risk is higher and why precision matters more.

the drug comes in several forms: injectable solutions, pour-on liquids for cattle and horses, topical spot-ons, and oral preparations. these formulations are not interchangeable. pour-on cattle products contain carrier solvents such as propylene glycol, which can be directly toxic to rabbits regardless of the ivermectin dose. exotic vets in Singapore who regularly treat small mammals typically prepare a specifically diluted solution, calibrated for rabbit-safe dosing by body weight. you cannot replicate this at home with an agricultural product.

conditions where vets prescribe ivermectin

the primary reason vets prescribe ivermectin for rabbits is ectoparasites: parasites that live on or within the skin.

ear mites (Psoroptes cuniculi). this is the most common indication in Singapore rabbit practice. signs include thick, dry crusting inside the ear canal, persistent head shaking, and intense scratching around the ears. your vet confirms the diagnosis by examining ear discharge under a microscope. untreated infestations lead to painful secondary bacterial infection and, in serious cases, damage to the middle and inner ear.

fur mites (Cheyletiella parasitivorax). sometimes called “walking dandruff” because mites can be seen moving through the coat under bright light. look for heavy scaling along the back and neck with possible patchy fur loss. ivermectin is effective against this parasite, though some SG vets prefer selamectin for its simpler topical application.

sarcoptic mange. less common in pet rabbits but documented. it causes intense itching and progressive skin crusting, typically starting around the face, ears, and feet. your vet needs a skin scraping and lab confirmation before treating. the presentation overlaps significantly with fungal infection, so a visual guess is not enough.

nasal and body mites (Leporacarus gibbus). occasionally found in rabbits with chronic sneezing that does not respond to antibiotics. ivermectin is one treatment option when these mites are confirmed by microscopy or laboratory testing.

for all of these conditions, one dose is rarely sufficient. mite eggs are resistant to ivermectin. a second treatment, typically two to three weeks after the first, is needed to catch the mites that hatched from those eggs after dose one. if you have a bonded pair, both rabbits need treatment starting on the same day, even if only one is showing signs.

what ivermectin does not treat

ivermectin is not a broad-spectrum rabbit dewormer. this is one of the most common misconceptions circulating in local rabbit groups and online forums.

coccidia is one of the most frequent parasitic problems in young Singapore rabbits. it causes diarrhoea, bloating, poor growth, and can be fatal in kits under six months old. coccidia is a protozoan organism, and ivermectin has no meaningful effect on it. treatment requires sulfonamide antibiotics or toltrazuril, depending on what your vet recommends after a faecal test.

Encephalitozoon cuniculi is a microsporidian organism responsible for many cases of sudden head tilt, hind-leg weakness, and cataracts in young rabbits. it is unfortunately common in Singapore’s rabbit population. the standard treatment is a prolonged fenbendazole course, not ivermectin. if your rabbit is showing neurological signs, seek an exotic vet promptly rather than reaching for a parasite drug at home.

intestinal worms from environmental exposure, especially in rabbits sharing outdoor time or an indoor space with dogs or cats, require different drug classes based on the specific parasite identified. a faecal float test is the appropriate starting point. empirical ivermectin treatment without a diagnosis is not.

why dosing is so critical

the therapeutic window for ivermectin in rabbits is narrow. the gap between a dose that kills parasites and one that triggers toxicity is smaller than in most other companion animals. rabbits also have a different liver enzyme profile from dogs and cats, meaning they clear the drug at a different rate.

signs of ivermectin toxicity in rabbits include tremors, loss of coordination, dilated pupils, excessive salivation, limb weakness, and in serious cases, seizures. these can appear within hours of an incorrect dose. there is no specific antidote. care is intensive and supportive only.

as of 2026, emergency treatment at a SG exotic clinic can cost SGD 500 or more for a single overnight stay, often many times more than the original consultation would have cost. a 1.5 kg rabbit and a 2.2 kg rabbit require meaningfully different doses. a 10% dilution error in a concentrated stock solution pushes the calculation outside the safe range. this is not a process to replicate at home.

getting ivermectin in Singapore

ivermectin for rabbits is not available over the counter at pet shops. you need a vet who has examined your rabbit and determined the appropriate dose. at an exotic-focused clinic in Singapore, the consultation fee typically ranges from SGD 50 to SGD 100 as of 2026. the medication is usually dispensed at the same visit.

not all vets in Singapore are confident treating rabbits. practices with a heavy cat and dog caseload sometimes refer exotic cases to colleagues with more small-mammal experience. it is worth finding an exotic vet before an urgent situation arises, not during one.

agricultural ivermectin products, including large-volume injectables and equine paste tubes, appear on regional online marketplaces and shopfronts. these are formulated for animals weighing hundreds of kilograms. the concentration is far beyond what is safe for a 2 kg rabbit, and the carrier solvents in many formulations compound the danger. do not purchase or use these for your rabbit under any circumstances.

what owners often get wrong

using the wrong product. canine ivermectin paste, equine paste tubes, and cattle pour-ons are not safe substitutes for a vet-dispensed rabbit formulation. some vets use selamectin spot-ons off-label for rabbits, but this is a clinical decision made with full knowledge of the rabbit’s weight and health status. buying a similar product and guessing the dose is a different situation entirely.

treating without a confirmed diagnosis. fur loss and scratching in rabbits can come from dental pain causing overgrooming, fungal skin infection, dietary issues, hormonal changes, or an allergic response to new hay or bedding. if you treat empirically for mites and the actual cause is something else, you delay the right fix and add unnecessary drug exposure to an already stressed rabbit.

stopping after the first dose. rabbits often look dramatically better within a week of starting ivermectin. the mites are dying. but mite eggs are not. skipping the second dose, timed correctly by your vet, typically results in a full reinfestation within three to four weeks.

treating only the symptomatic rabbit. if bonded rabbits share a cage or free-roam space, treating one and not the other leaves an active reservoir. both rabbits need the full treatment course beginning on the same day.

community-sourced information here is not veterinary advice. for any health concern see a licensed SG exotic vet.

community-sourced information, not veterinary advice. for medical issues, see a licensed SG exotic vet — start with our vet directory.

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