The study will involve subjects taking the probiotic product (KE-99 + fish oil)and placebo, each for seven days (as per sponsor guidance), in random order, with a seven day washout in between (as per sponsor guidance). Fecal analyses will be done at the beginning and end of each seven day supplementation period so that the number of live KE-99 in feces can be determined with higher numbers being positive (indicates more live KE-99 survived digestion).