Drug profile

The FDA adverse-event record for S-Adenosylmethionine And Silybin

60 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference S-Adenosylmethionine And Silybin. See the species affected, top reactions, and outcomes below.

60
adverse-event reports
15.0%
death-coded share
Dog
most-reported species
19
Diarrhoea - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
60
Total Reports
9
Deaths Reported
15.0%
Death Rate

Active Ingredients

S-Adenosylmethionine And Silybin

Administration Routes

OralUnknown

Species Affected

Dog 55
Cat 4
Lynx 1

Most Affected Breeds

Retriever - Labrador 8
Bichon Frise 4
Domestic Shorthair 4
Chihuahua 4
Shepherd Dog - German 4
Retriever - Golden 3
Poodle - Miniature 3
Spitz - German Pomeranian 2
Shih Tzu 2
Crossbred Canine/dog 1

Most Reported Reactions

Diarrhoea 19
Vomiting 12
Panting 8
Elevated alanine aminotransferase (ALT) 8
Seizure NOS 5
Lethargy (see also Central nervous system depression in 'Neurological') 5
Bloody diarrhoea 5
Death by euthanasia 5
Not eating 5
Weakness 4
Lack of efficacy - NOS 4
Decreased appetite 4

Outcome Breakdown

Recovered/Normal
19 (31.7%)
Ongoing
16 (26.7%)
Outcome Unknown
16 (26.7%)
Euthanized
5 (8.3%)
Died
4 (6.7%)

S-Adenosylmethionine And Silybin Adverse Event Insights

60 reports name S-Adenosylmethionine And Silybin; 9 recorded a death outcome (15.0% of reported events, not a population-level mortality rate). Active ingredient: S-Adenosylmethionine And Silybin. Administration routes: Oral, Unknown.

By species: Dog (55 reports), Cat (4 reports), Lynx (1 reports). By breed: Retriever - Labrador (8), Bichon Frise (4), Domestic Shorthair (4).

Leading clinical signs: Diarrhoea (19), Vomiting (12), Panting (8), Elevated alanine aminotransferase (ALT) (8). Outcome, 60 coded reports: Recovered/Normal leads at 31.7%.

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.