I'm wondering what particular brands of S. boulardi are used and recommended by members here. I bought S. boulardi in capsule form (see link) from Amazon and was opening them and pouring them onto my cat's food. But, though they don't expire until 2025, I've noticed that the powder in the capsule has now become clumpy. It was not like that when I bought it originally. The information on Amazon says that the capsules don't need to be refrigerated. I'm wondering if the capsules are still okay to use, or, if I should buy a new bottle.
Amazon.com
Amazon.com