Didn't stop fleas after Chondroitin + Glucosamine in dogs

The FDA has received 27 reports of didn't stop fleas in dogs after Chondroitin + Glucosamine. That is 1.0% of all reports for this medicine, compared with 6.2% across reports for all dog medicines, so it is reported less often than average with this medicine.

27Reports
7.4%Marked serious
15%Recovered
7.4%Died or euthanised
110 daysTypical onset
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How soon it started

Same day
1 6.3%
1–2 days
0 0.0%
3–7 days
0 0.0%
1–4 weeks
5 31%
Over a month
10 63%

How the animals did

Recovered
2 7.4%
Recovered with lasting effects
2 7.4%
Still unwell when reported
3 11%
Euthanised
2 7.4%
Not known
18 67%

Problems reported at the same time

Didn't work as expected
10 37%
Itching
5 19%
Lethargy
4 15%
Drug dose administration interval too short
4 15%
Vomiting
4 15%
Unpalatable
4 15%
Death
2 7.4%
Breathing problems
2 7.4%

Age of the animals

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

About this medicine

Type: medicine.

Questions owners ask

Can Chondroitin + Glucosamine cause didn't stop fleas in dogs?
27 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 110 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 stop fleas with similar medicines

All reported side effects of Chondroitin + Glucosamine in dogs · Medicines most reported with didn't stop fleas