Wobbliness (ataxia) after Vitamin B12 in cats

The FDA has received 46 reports of wobbliness (ataxia) in cats after Vitamin B12. That is 12% of all reports for this medicine, compared with 4.7% across reports for all cat medicines, so it is reported unusually often with this medicine.

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How soon it started

How the animals did

Problems reported at the same time

Age of the animals

About this medicine

Type: medicine.

Questions owners ask

Can Vitamin B12 cause wobbliness (ataxia) in cats?

46 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.

How soon after a dose was it reported?

In half of the reports with dates, it started within 4 days of the first dose.

What should I do?

Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Wobbliness (ataxia) with similar medicines

• Wobbliness (ataxia) after Ketamine 214 reports · 6.6% of its reports
• Wobbliness (ataxia) after Butorphanol 152 reports · 6.8% of its reports
• Wobbliness (ataxia) after Isoflurane 132 reports · 6.5% of its reports
• Wobbliness (ataxia) after Tiletamine + Zolazepam 204 reports · 12% of its reports
• Wobbliness (ataxia) after Methylprednisolone 106 reports · 6.6% of its reports
• Wobbliness (ataxia) after Propofol 59 reports · 5.0% of its reports
• Wobbliness (ataxia) after Atipamezole 63 reports · 6.1% of its reports
• Wobbliness (ataxia) after Midazolam 58 reports · 7.8% of its reports
• Wobbliness (ataxia) after Florfenicol + Mometasone + Terbinafine 306 reports · 44% of its reports
• Wobbliness (ataxia) after Orbifloxacin 59 reports · 8.7% of its reports

All reported side effects of Vitamin B12 in cats · Medicines most reported with wobbliness (ataxia)