Sick Round 2 /probiotic

Awhile ago I posted about one of my pigs being on anti-biotics & all was well and fine she cleared up at the end of her 2 weeks however I wasn't given anything for her cage mate because she had no signs and by the time daphne was showing signs it was already to late to separate them so my vet just said watch them both. Lone behold Vegas was also sick, getting daphne sick again so now they are BOTH on antibiotics(thankfully the vet didn't make me bring them both back in because they had recently seen daphne & knew she had a cage mate). Any how I bought a pro biotic because poop soup for 2 is a bit much they already hate me&that syringe,my question is how do I know if its dairy free ?because none on the shelf said "dairy-free"

It contains: more than 3 billion of total viable cells per capsule of lactobacillus acidophilus and bifidobacterium longum and B.bifidum

other ingredients: microcrystalline cellulose, cellulose,magnesium sterate, and silicon dioxide(I assume that's the capsule)