Dog Food Prescription

Please suggest a good over the counter or prescription dog food for joint problems?
My dog is a 6 year old, 75 pound mutt. 1/4 beagle, 1/4 bassett hound and 1/2 unknown (thought to be german shepard, lab, bloodhound or something large). Just recently, he’s been diagnosed with arthritis in his back and has some minor bulging discs. These have improved with treatment and bed rest but now he’s on prescription IAMS joint food and Synovi G chews both with high Glucosamine and Chondroitin Sulfate. I’ve noticed a major improvement however the cost of IAMS prescription food has increased dramatically…from $50 for a 30lb bag to $70!!!!! I go through one bag a month so this is getting expensive. I’m calling around to get other prices however I’d also like to know if there’s other dry food options.
To be quite honest the foods that are specially formulated for joint issues have such minute amounts of Glucosamine in the food. They put just enough to be able to label their food as having Glucosamine in the formula.
I would get your boy on a Glucosamine/Chondroitin supplement such as Cosequin. That is your best bet.
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