These are Azo Cranberry gummie chews and perhaps they'd be better taken by pets? The tablets may be better suited to embedding in peanut butter, cheese or your favorite form of pill disguise. 

This is the tablet version. You can use "the adult dose" per 50 pounds of dog. That means if the 12 to adult dose is 2 tabs twice a day, go with that. If you're treating a little dog, consider quarters to halves. Still, the margin of safety on 'pure cranberry' is high. 
When treating dogs up to 120 pounds consider increasing the dose by 50% (Means 3 tabs instead of two)

I would add, that if some dog-breeder message board is running off telling people to use "just any" Azo, or they're recommending another Azo, (for example the one with the extra chemistry in it) AND you try it, AND it works and doesn't wreck your dog's kidneys or mentation, please let me know. That is COMMONLY a way I learn new things, is treating things the breeder message boards cause, SOMETIMES for better, SOMETIMES for worse. 

To wit: 
"Phenazopyridine hydrochloride in dogs
Phenazopyridine, found in products such as Pyridium, is an OTC medication used to urinary tract infections and other urinary problems. This medication may be toxic to pets and should never be administered to animals. ... Presumptive hepatotoxicity and rhabdomyolysis secondary to phenazopyridine toxicity in a dog."