Liver problems after S-adenosylmethionine Silybin in dogs

The FDA has received 99 reports of liver problems in dogs after S-adenosylmethionine Silybin. That is 39% of all reports for this medicine, compared with 4.6% across reports for all dog medicines, so it is reported unusually often with this medicine.

99Reports
55%Marked serious
6.1%Recovered
15%Died or euthanised
61 daysTypical onset
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How soon it started

Same day
10 18%
1–2 days
1 1.8%
3–7 days
0 0.0%
1–4 weeks
6 11%
Over a month
40 70%

How the animals did

Recovered
4 4.0%
Recovered with lasting effects
2 2.0%
Still unwell when reported
38 38%
Died
3 3.0%
Euthanised
12 12%
Not known
40 40%

Problems reported at the same time

23 23%
21 21%
19 19%
15 15%
Elevated gamma-glutamyl transferase (ggt)
13 13%

Age of the animals

Under 1 year
0
1–3 years
5
4–7 years
17
8–11 years
33
12+ years
40

About this medicine

Type: medicine.

Questions owners ask

Can S-adenosylmethionine Silybin cause liver problems in dogs?
99 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 61 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).

Liver problems with similar medicines

All reported side effects of S-adenosylmethionine Silybin in dogs · Medicines most reported with liver problems