Side effects and serious reactions happen with medications, too, and aren’t exactly uncommon. One of my dogs almost died from an otherwise useful drug that has helped many dogs in the past, including dogs I previously owned. No decent vet OR doctor would assume herbal or “natural” (a complete buzz-word) automatically equals safe, and intelligent supplementation for a serious problem requires the advice of a professional, as many do more harm than good when ingested on a whim.
It’s not one sided, and I guess I don’t understand why a veterinarian that can help save or improve the life of a dog with a nutritional supplement would make you so upset, but again…to each their own, as you state. I’m just glad my dog in question is alive, and I’m glad I found a veterinarian who was able to save my dog and give him a good quality of life.
