Didn't work as expected after Famotidine in dogs

387 reports to the FDA describe didn't work as expected in dogs given Famotidine. That is 15% of all reports for this medicine, compared with 13% across reports for all dog medicines.

387Reports

43%Marked serious

13%Recovered

17%Died or euthanised

9 daysTypical onset

How soon it started

Same day

63 21%

1–2 days

37 13%

3–7 days

40 14%

1–4 weeks

74 25%

Over a month

80 27%

How the animals did

Recovered

44 11%

Recovered with lasting effects

5 1.3%

Still unwell when reported

115 30%

Died

24 6.2%

Euthanised

40 10%

Not known

159 41%

Problems reported at the same time

Injection site reaction

123 32%

109 28%

103 27%

100 26%

77 20%

76 20%

61 16%

56 14%

Age of the animals

Under 1 year

1–3 years

4–7 years

116

8–11 years

136

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Famotidine cause didn't work as expected in dogs?: 387 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 9 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

Didn't work as expected after Melarsomine (Immiticide) 646 reports · 2.8% of its reports
Didn't work as expected after Polysulfated Glycosaminoglycan 698 reports · 13% of its reports
Didn't work as expected after Diphenhydramine 585 reports · 12% of its reports
Didn't work as expected after Butorphanol 1,022 reports · 23% of its reports
Didn't work as expected after Cefpodoxime 671 reports · 17% of its reports
Didn't work as expected after Tramadol 475 reports · 13% of its reports
Didn't work as expected after Florfenicol + Mometasone + Terbinafine 969 reports · 27% of its reports
Didn't work as expected after Desoxycorticosterone Pivalate 355 reports · 11% of its reports
Didn't work as expected after Propofol 600 reports · 20% of its reports
Didn't work as expected after Dirlotapide 712 reports · 25% of its reports

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