Supplements Check with your vet first. The only thing I ever supplement with is for Momma chins. They get Extra Strength berry flavored Tums for the calcium. This is where the raisin bribes are best put in to use. I wrap the tablet portion in a raisin to encourage her to eat it, but soon she will take the tablet with a lot if zeal.
Some people use cranberry juice in a separate water bottle as it is said to help cleanse the system.
I have tried it and am not really sure if it does that much. As long as it is pure and water is still available, I don't think it can hurt, as long as it is offered only a day or so at a time. ANother thing I have heard of is mixing cider vinegar in the water. I do not recommend it. There are many highly qualified heath professionals in the pet world.