Luke gets Joint Health Chewables from Springtime. Each tablet has 250mg of Glucosamine HCL and 175mg of Chondroitin (amongst other things). He gets three tablets per day, according to the bottle's recommended amount for dogs 80-120lbs (he is 92lbs).
I wasn't having very good luck getting Luke to eat them on his own, but for some reason when I throw them on his dog food they're the first thing he eats. [8|]

Luke -- Lab/Shepherd (1-1-04) Open Versatility, EAC, EJC, TN-E, TG-E, HP-O
Kaiser -- Alaskan Klee Kai (12-30-07) Future Agility Star!