Proviable looks a lot better than Forti Flora – it has 7 strains of probiotics which is a decent amount. The company that makes Proviable, Nutramax Labs, is also a pretty reputable company. If you want to go with a product that your vet approves of, I’d go with that. I’ve never used the Mercola supplement – I prefer my dogs to get their probiotics from natural sources such as raw green tripe, kefir and yogurt – but I would trust any product Dr. Becker put her name on and I know several of the “regulars” on this site have used it with good results.
