Hair loss after Glucosamine in dogs

The FDA has received 29 reports of hair loss in dogs after Glucosamine. That is 1.6% of all reports for this medicine, compared with 1.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

29Reports
41%Marked serious
21%Recovered
0.0%Died or euthanised
65 daysTypical onset
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How soon it started

Same day
1 5.6%
1–2 days
0 0.0%
3–7 days
3 17%
1–4 weeks
2 11%
Over a month
12 67%

How the animals did

Recovered
4 14%
Recovered with lasting effects
2 6.9%
Still unwell when reported
10 34%
Not known
13 45%

Problems reported at the same time

17 59%
Reddening of the skin
5 17%
Crust
4 14%

Age of the animals

Under 1 year
0
1–3 years
1
4–7 years
6
8–11 years
12
12+ years
10

About this medicine

Type: medicine.

Questions owners ask

Can Glucosamine cause hair loss in dogs?
29 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 65 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).

Hair loss with similar medicines

All reported side effects of Glucosamine in dogs · Medicines most reported with hair loss