I am trying really hard to work on Clover's general nervousness and barking - she's had both Zylkene and dorwest compound tablets in the past .Lately I've been giving her Kalmaid, which really isn't working

So I am wondering whether to try the Zylkene again. I'm not very good at understanding ingredients, does it have much more in it that might help than the dorwest compound?

Don't want to spend loads of money on Zylkene if it doesn't have much more in it than the Dorwest. Thanks all