If you don’t want the corn silk, I’d just make the formula without it. It’ll work just fine that way.
THat said, the risk of corn silk harming a dog is really low and has more to do with obstructions from them eating the long strands than from inherent toxicity. Powdered herbs aren’t going to cause those sorts or issues.
I’ve use the UTI formula, as is, in dogs for many years in the vet practice.
Don't use herbs or combine herbs with medications or use them during lactation or pregnancy without talking with your healthcare provider.
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