So, I started reading up on it today. I was worried about my choice for the dogs, even though theirs is specifically for dogs. But, said nothing about veggies.
All I found in my search was that the supplement, glucosamine, is derived, as I remember, from crab, shrimp, etc. or can, in some cases, be lab grown.
While there was a warning for shellfish allergic persons, there was nothing about dogs, meat, etc.
I also searched dogs taking human glucosamine. What I found was that:
It's not the human glucosamine that's the problem, it that A - you need to have the correct dosage, B - you need to read the inert ingredients carefully. For example, you might take a formulation which contains garlic, or natural grape flavoring, neither of which you want your dogs taking.
As I said, mine is meant for dogs, and I thank you for bringing this up, as it helped give me some peace of mind. I don't know if this is the brand I'll stick with forever, but I'm a little more confident, having done more research.
I also couldn't find glucosamine sourced from vegetables. Of foods that contain glucosamine naturally, bones and fungus are the main ones. I *think* that the fungus is a corn fungus, which I would not like to use. But, perhaps there are other fungi, too.
It's early days with these dogs, so I can switch easily. But, the ones I used for Beyorne etc. didn't cause any trouble. I wish that I had an old bottle somewhere from then to look at, but that's unlikely. Come to think of it, I doubt that there was even a dog version back then...maybe?
Oh, and I also found a list of side effects for dogs, in case any one of them has them. Let us know how Charlie does on his, and I'll report on my two, if anything, good or bad, happens.
Yes, the composting leaves would be a great addition! We added leaves to our compost, too, and it's starting to look good. Some will go into my gardening bed, also. :-)
Love All Life; Thank You For Posting! :)