I wouldn't bother with the magnet nonsense glucosamine works, it basically lubricates to joints. It'll take anywhere between a couple of days and a couple of weeks.
The ones from the vet are much better, they're about 12p a day and have higher dosage than the shop bought ones, also they're powder capsules so sprinkling them on dog food is easier than trying to crush solid tablets.
The ones from the vet are much better, they're about 12p a day and have higher dosage than the shop bought ones, also they're powder capsules so sprinkling them on dog food is easier than trying to crush solid tablets.