I have had wonderful results working with dogs
like yours using some of these natural therapies.
Although, the Glucosamine dosage
may be increased, in my experience, many dogs like yours enjoy superior results using natural arthritis remedies properly formulated and dosed in combination.
The most useful arthritis nutrient products contain various combination's of Glucosamine, MSM, Omega-3 Fatty Acids (sourced as EPA, DHA), Vitamin C and Hyaluronic acid.