I don't know to much about this topic but I use some stuff called kickstart biotic. I use it for gas, heart burn and constipation. Costs about 12 bucks its made for kids but I like it, tastes like kool aide.
<a target=_blank class=ftalternatingbarlinklarge href="https://www.advocare.com/02033542/Store/ItemDetail.aspx?itemCode=K2201&id=H">KickStart Biotic</a>
<a target=_blank class=ftalternatingbarlinklarge href="https://www.advocare.com/02033542/Store/ItemDetail.aspx?itemCode=K2201&id=H">KickStart Biotic</a>