Liver problems after S-adenosylmethionine in dogs

The FDA has received 120 reports of liver problems in dogs after S-adenosylmethionine. That is 31% 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.

120Reports
53%Marked serious
18%Recovered
20%Died or euthanised
38 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
5 6.1%
1–2 days
4 4.9%
3–7 days
9 11%
1–4 weeks
18 22%
Over a month
46 56%

How the animals did

Recovered
13 11%
Recovered with lasting effects
8 6.7%
Still unwell when reported
48 40%
Died
8 6.7%
Euthanised
16 13%
Not known
27 23%

Problems reported at the same time

Age of the animals

Under 1 year
2
1–3 years
10
4–7 years
14
8–11 years
50
12+ years
42

About this medicine

Type: medicine.

Questions owners ask

Can S-adenosylmethionine cause liver problems in dogs?
120 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 38 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 in dogs · Medicines most reported with liver problems