Lysine
102 adverse event reports submitted to the FDA
Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
102
Total Reports
19
Deaths Reported
1860.0%
Death Rate
Active Ingredients
Lysine
Administration Routes
UnknownOralTopical
Species Affected
Cat 99
Dog 2
Cattle 1
Most Affected Breeds
Domestic Shorthair 59
Domestic Mediumhair 7
Domestic Longhair 5
Cat (unknown) 4
American Curl Shorthair 4
Persian 3
Siamese 3
Cat (other) 3
Ragdoll 2
Bengal 2
Most Reported Reactions
Vomiting 18
Lethargy (see also Central nervous system depression in 'Neurological') 17
Lack of efficacy - NOS 15
Decreased appetite 10
Anorexia 10
Death by euthanasia 8
Behavioural disorder NOS 8
Vocalisation 8
Ataxia 8
Death 8
Other abnormal test result NOS 7
Weight loss 7
Outcome Breakdown
Ongoing
36 (35.0%)
Outcome Unknown
30 (29.1%)
Recovered/Normal
18 (17.5%)
Died
11 (10.7%)
Euthanized
8 (7.8%)
Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Data reflects voluntary submissions and may not represent actual incidence rates.