Eat Dirt

High CFU count. Purchase a probiotic brand that has a higher number of probiotics, ranging from fifteen billion to a hundred billion.
Strain diversity. Search for a probiotic or microbiome supplement that has ten or more strains and contains not only probiotics but also SBOs, yeasts, fungi, and algae.
Survivability. Look for strains like Lactobacillus plantarum, Bacillus subtilis, Saccharomyces boulardii, mushroom mycelia, phages, and other cultures or formulas that ensure that the probiotics make it to the gut and are able to colonize.

brevis—shown to survive the GI tract, boost cellular immunity, enhance natural T-killer cells, and kill H. pylori bacteria.29
Lactobacillus rhamnosus—supports bacterial balance and healthy skin. Helps fight urinary tract infections and respiratory infections, and reduce anxiety by reducing stress hormones and GABA neurotransmitter receptors.30 Also survives GI tract.
Bacillus subtilis—an endospore probiotic that is heat resistant. Elicits a potent immune response and supports GALT.31, 32 Suppresses growth of bad bacteria like salmonella and other pathogens.
Bacillus coagulans—an endospore probiotic that is heat resistant and improves nutrient absorption. Also has been shown to reduce inflammation and symptoms of arthritis.33
Saccharomyces boulardii—a yeast probiotic strain that restores natural flora in the large and small intestine and improves intestinal cell growth. It has proved effective in treating inflammatory bowel disease like Crohn’s disease.34 It’s also been shown to have antitoxin effects,35 be antimicrobial, and reduce inflammation.36
BONUS: If you want more advanced training on probiotics check out this bonus probiotic guide: www.draxe.com/probiotic-guide-bonus

THE POWER OF PROBIOTICS
Here are just a few of the most commonly available probiotic strains and their proven therapeutic power.
Bifidobacterium bifidum—the most dominant probiotic in infants and in the large intestine. Supports production of vitamins in gut, inhibits harmful bacteria, supports immune system response, and prevents diarrhea.23
Bifidobacterium longum—supports liver function, reduces inflammation, removes lead and heavy metals.24
Bifidobacterium breve—helps colonize healthy gut community and crowd out bad bacteria.25
Bifidobacterium infantis—alleviates IBS symptoms, diarrhea, and constipation.26
Lactobacillus casei—supports immunity, inhibits H. pylori, and helps fight infections.27
Lactobacillus acidophilus—relieves gas and bloating, improves lactose intolerance. Shown to reduce E. coli by 61 percent, lower cholesterol levels,28 and create vitamin K. Also important in GALT immune strength.
Lactobacillus bulgaricus—a powerful probiotic strain that has been shown to fight harmful bacteria that invade your digestive system and is stable enough to withstand the acidic digestive juices of the stomach. It also neutralizes toxins and naturally produces its own antibiotics.
Lactobacillus