There are two very trusted supplements to use. The first is NuJoint DS (double strength) that can be found at www.nuvet.com/42299 That order code is needed in order to buy from their site. The second is the Agility formula from PipsChoice www.pipschoice.com Both of these are winners, they do not even compare to the ones found in the markets. Vets will recommend the Cosequin, which do not contain a few important ingredients, and is not made in an FDA pharmaceutical lab. Example:
NuJoint DS contains 500 mg. Glucosamine Sulfate
250 mg. Chondroitin Sulfate
250 mg. MSM (Methylsulfonylmethane)
50 mg. Vitamin C (Ester-C®)
Flavored with real chicken liver and is made in a FDA pharmaceutical lab.
Hope this helps you in choosing the right one for your pet. Dosage are listed on both websites. It pays to check out these great products, which are not sold in stores.