Linda funny you just wrote about the cranberry. I started the sisters on vitamins. Its called springtime Fresh Factors. I bought it over a year ago and Bob didn't like me giving them vitamins but I figure what can it hurt.
hi Suzi, vitamin adding really isn't needed with kibble feeding. But be aware certain vitamins can be overdosed. here's a quote from Dog Food Project
Toxicity: Excessive vitamin D supplementation can result in increased calcium absorption from the intestines. This can
cause increased calcium resorption from the bones, leading to elevated levels of calcium in the blood. Elevated blood
calcium may contribute to calcium deposition in soft tissues such as the heart and lungs. This can reduce their
ability to function. Kidney stones, vomiting.
Toxicity: None known, but high levels of vitamin E can adversely affect the absorption of vitamins A and K, causing
deficiencies. In the case of vitamin K this can interfere with normal blood clotting
Toxicity: None, vitamin C is water soluble and excess is regularly excreted by the body, but overconsumption may cause
diarrhea since vitamin C is a natural laxative. Recent studies have shown that excessively high doses of vitamin C may
contribute to the formation of kidney stones, and in very rare cases anemia caused by interference with vitamin B12