Didn't work as expected after S-adenosylmethionine in dogs

The FDA has received 41 reports of didn't work as expected in dogs after S-adenosylmethionine. That is 10% of all reports for this medicine, compared with 13% across reports for all dog medicines.

41Reports
22%Marked serious
0.0%Recovered
7.3%Died or euthanised
57 daysTypical onset
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How soon it started

Same day
2 11%
1–2 days
0 0.0%
3–7 days
0 0.0%
1–4 weeks
2 11%
Over a month
15 79%

How the animals did

Still unwell when reported
7 17%
Died
1 2.4%
Euthanised
2 4.9%
Not known
31 76%

Problems reported at the same time

Didn't stop fleas
4 9.8%
3 7.3%
3 7.3%
3 7.3%
Didn't stop worms
3 7.3%

Age of the animals

Under 1 year
0
1–3 years
1
4–7 years
4
8–11 years
10
12+ years
25

About this medicine

Type: medicine.

Questions owners ask

Can S-adenosylmethionine cause didn't work as expected in dogs?
41 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 57 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).

Didn't work as expected with similar medicines

All reported side effects of S-adenosylmethionine in dogs · Medicines most reported with didn't work as expected