Death after N-butylscopolaminium Bromide in horses

The FDA has received 36 reports of death in horses after N-butylscopolaminium Bromide. That is 47% of all reports for this medicine, compared with 11% across reports for all horse medicines, so it is reported unusually often with this medicine.

36Reports
97%Marked serious
0.0%Recovered
100%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
23 82%
1–2 days
2 7.1%
3–7 days
0 0.0%
1–4 weeks
2 7.1%
Over a month
1 3.6%

How the animals did

Died
10 28%
Euthanised
26 72%

Problems reported at the same time

Colic
8 22%
Wobbliness (ataxia)
6 17%
Liver problems
5 14%
Didn't work as expected
5 14%
Recumbency
5 14%
Collapse
4 11%
Breathing problems
4 11%
Tachycardia
4 11%

Age of the animals

Under 1 year
0
1–3 years
2
4–7 years
1
8–11 years
8
12+ years
24

About this medicine

Type: medicine.

Questions owners ask

Can N-butylscopolaminium Bromide cause death in horses?
36 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 the same day 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).

Death with similar medicines

All reported side effects of N-butylscopolaminium Bromide in horses · Medicines most reported with death