Clinical condition	Studied probiotic species	Studied products*	Third-party tested products	Comments
Antibiotic-associated diarrhea10	Bacillus clausii, coagulans	Align	Garden of Life Raw Probiotics Ultimate Care	Broad-spectrum combination products are likely to have the most benefit; consider 10 billion CFUs per day of each organism
	Bifidobacterium animalis subsp lactis, bifidum, breve, longum, longum subsp infantis	Bio-K+	Now Foods Probiotic-10
	Clostridium butyricum	Culturelle	Renew Life Ultimate Flora
	Enterococcus faecium	DanActive	Sedona Labs iFlora Multi-Probiotics
	Lactobacillus acidophilus, casei, casei subsp immunitas, delbrueckii subsp bulgaricus, paracasei, plantarum, reuteri, rhamnosus, rhamnosus GG, sporogenes	Florastor
	Lactococcus lactis subsp diacetylactis	HOWARU Restore
	Leuconostoc cremoris	MIYAIRI 588†
	Saccharomyces boulardii, florentinus	VSL#3
	Streptococcus thermophilus
Clostridium difficile–associated diarrhea13,14	Bifidobacterium animalis subsp lactis, breve, longum, longum subsp infantis	Align	Garden of Life Raw Probiotics Ultimate Care	—
	Clostridium butyricum	Culturelle	Now Foods Probiotic-10
	Lactobacillus acidophilus, casei, delbrueckii subsp bulgaricus, paracasei, plantarum, rhamnosus GG	DanActive	Renew Life Ultimate Flora
	Saccharomyces boulardii	Florastor	Sedona Labs iFlora Multi-Probiotics
	Streptococcus thermophilus	MIYAIRI 588†
		VSL#3
Helicobacter pylori15,16	Bifidobacterium animalis, breve	Bacid	Garden of Life Raw Probiotics Ultimate Care	Adjunct to antibiotics
	Lactobacillus acidophilus, casei, delbrueckii subsp bulgaricus, gasseri, johnsonii, reuteri, rhamnosus, rhamnosus GG	Culturelle	Now Foods Probiotic-10
	Propionibacterium freudenreichii subsp shermanii (JS)	Lactinex	Renew Life Ultimate Flora
	Streptococcus thermophilus		Sedona Labs iFlora Multi-Probiotics
Hepatic encephalopathy 17,18	Bifidobacterium breve, longum, longum subsp infantis	Align	Garden of Life Raw Probiotics Ultimate Care	—
	Escherichia coli (Nissle)	Mutaflor	Now Foods Probiotic-10
	Lactobacillus acidophilus, casei, delbrueckii subsp bulgaricus, paracasei, plantarum	VSL#3	Renew Life Ultimate Flora
	Leuconostoc mesenteroides		Sedona Labs iFlora Multi-Probiotics
	Pediococcus pentosaceus
	Streptococcus thermophilus
Ulcerative colitis19,20	Bifidobacterium animalis subsp lactis, breve, longum, longum subsp infantis	Activia	Garden of Life Raw Probiotics Ultimate Care	VSL#3 and similar high-dose multispecies products with several Bifidobacterium species are preferred
	Escherichia coli (Nissle)	Align	Now Foods Probiotic-10
	Lactobacillus acidophilus, delbrueckii subsp bulgaricus, johnsonii, paracasei, plantarum, rhamnosus, rhamnosus GG	Bacid	Renew Life Ultimate Flora
	Streptococcus thermophilus	Culturelle	Sedona Labs iFlora Multi-Probiotics
		Mutaflor
		VSL#3
Irritable bowel syndrome21–23	Bifidobacterium animalis subsp lactis, bifidum, breve, longum	Activia	Garden of Life Raw Probiotics Ultimate Care	—
	Enterococcus faecalis	Align	Now Foods Probiotic-10
	Escherichia coli (Nissle)	Bacid	Renew Life Ultimate Flora
	Lactobacillus acidophilus, delbrueckii subsp bulgaricus, lactis, paracasei, plantarum, rhamnosus, rhamnosus GG	Culturelle	Sedona Labs iFlora Multi-Probiotics
	Propionibacterium freudenreichii subsp shermanii	USANA
	Streptococcus thermophilus	VSL#3
		YoPlus
Colic24,25	Lactobacillus reuteri ATCC 55730/DSM 17938	—	Jarrow Formulas Baby’s Jarro-Dophilus plus FOS	—
			Nature’s Way Primadophilus Reuteri
Necrotizing enterocolitis26,27	Bacillus cereus, subtilis	Bacid	Florastor Kids	Products containing a variety of Bifidobacterium species are most beneficial
	Bifidobacterium adolescentis, animalis subsp lactis, bifidum, breve, longum, longum subsp infantis	Culturelle	Nature’s Answer Probiotics for Kids	Dose approximately 3 billion CFUs per day of each organism for the first seven days of life; adult powdered products may be given at one-fourth dose in breast milk or formula12
	Enterococcus faecalis, faecium	Florajen
	Lactobacillus acidophilus, casei, delbrueckii subsp bulgaricus, plantarum, reuteri, rhamnosus, rhamnosus GG, sporogenes	Florastor
	Saccharomyces boulardii
	Streptococcus thermophilus