criso
Coming over here & taking your jobs since 1900
Pro Hoof has yea sacc in, as criso says. Yea sacc is the live version of brewer's yeast, however they do not, as far as I'm aware, fulfil the same function. The yeast in brewer's yeast is dead, therefore although it is a good source of B vitamins and some trace minerals, it doesn't have the same gut calming effect as yea sacc, so I'm a little puzzled as to why it was recommended for colic. There should be no problem with feeding them side by side, though, so if it's worked so far... My guess would be that you wouldn't need it, but if you don't want to risk it then just keep feeding it.
They both contain saccharomyces cerevisiae and I understood that it was helpful in both forms.
I feed Brewers's Yeast for gut calming properties I know with mine it makes a massive difference to him as he goes footy if I stop.
However I would feed Yea sacc instead if I couldn't source it or he wouldn't eat it in that form, I just like the fact it is economical and I am also adding B vits.