Lethargy after Mercaptobenzothiazole in dogs

50 reports to the FDA describe lethargy in dogs given Mercaptobenzothiazole. That is 22% of all reports for this medicine, compared with 11% across reports for all dog medicines, so it is reported unusually often with this medicine.

50Reports
2.0%Marked serious
2.0%Recovered
8.0%Died or euthanised
–Typical onset
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How the animals did

Recovered
1 2.0%
Died
4 8.0%
Not known
45 90%

Problems reported at the same time

17 34%
Tremors
5 10%
Diarrhea
5 10%
Death
4 8.0%
Weakness
3 6.0%
Breathing problems
3 6.0%

Age of the animals

Under 1 year
10
1–3 years
18
4–7 years
11
8–11 years
9
12+ years
1

About this medicine

Type: medicine.

Questions owners ask

Can Mercaptobenzothiazole cause lethargy in dogs?
50 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.
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).

Lethargy with similar medicines

All reported side effects of Mercaptobenzothiazole in dogs · Medicines most reported with lethargy