Dexamethasone + Neomycin + Thiabendazole side effects in cats

802 reports sent to the FDA between 1996 and 2026 involve Dexamethasone + Neomycin + Thiabendazole in cats. The most reported problems were loss of appetite, lethargy, vomiting. 31% were marked serious, and where it was recorded, signs eased after stopping the medicine in 100% of cases.

802Reports
31%Marked serious
49%Only medicine involved
13%Recovered
10%Died or euthanised
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

About this medicine

Dexamethasone reduces inflammation and immune activity.

Steroids commonly cause increased thirst, urination and appetite, especially at higher doses.

Most reported side effects

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a cat still getting fleas or heartworm), not about a side effect.

Didn't stop mites
6 0.7%
Didn't stop fleas
5 0.6%
Didn't prevent heartworm
2 0.2%
Didn't stop worms
1 0.1%

How soon problems started

Same day
147 24%
1–2 days
106 17%
3–7 days
105 17%
1–4 weeks
185 30%
Over a month
73 12%

Time from the first dose to the first sign, where both dates were reported (616 reports).

How the animals did

Recovered
103 13%
Recovered with lasting effects
3 0.4%
Still unwell when reported
169 21%
Died
39 4.9%
Euthanised
44 5.5%
Not known
444 55%

Breeds named most often

Popular breeds appear more often because there are more of them.

Other corticosteroids for cats