Im trying jarrow ibs formula right now. Clinically proven formula, human origin, suppose to colonize in the gut and survive stomach acid. Hopefully it works for more than a week. Also looking at jarrow-dophilus CDS formula- has a L.acidophilus Lafti L10 strain that is clinically proven to help with candida. Might try renew life critical colon care as well. See which ones work the best.