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Probiotics

24 Probiotics compounds, 17 at evidence level A, average absorption 84%. Forms differ mostly in how much of the dose actually reaches you, not in what they do.

0 compounds
0 interactions
0 evidence A

Most used forms

Ranked by popularity, with what each one actually does

Lactobacillus acidophilus

Lactose tolerance & vaginal health

1-20 billion CFU With meals especially dairy Evidence A 85% absorbed

Lactobacillus rhamnosus

Immune support & antibiotic protection

1-20 billion CFU With meals or during antibiotics Evidence A 90% absorbed

Bifidobacterium lactis

Digestive regularity & lactose tolerance

1-20 billion CFU With meals especially dairy Evidence A 85% absorbed

Saccharomyces boulardii

Antibiotic protection & pathogen resistance

250-500mg With meals or during antibiotics Evidence A 80% absorbed

Bifidobacterium longum

Digestive & immune health

1-20 billion CFU With meals or empty stomach Evidence A 85% absorbed

What people take these for

5 goals
Digestion 24 Immunity 8 Joints & Bones 2 Heart 2 Sleep & Stress 1

Choosing between forms

Same compound, different absorption
Lactobacillus acidophilus vs Lactobacillus rhamnosus 85% · 90% Bifidobacterium lactis vs Lactobacillus acidophilus 85% · 85% Lactobacillus acidophilus vs Saccharomyces boulardii 85% · 80% Bifidobacterium longum vs Lactobacillus acidophilus 85% · 85% Lactobacillus acidophilus vs Lactobacillus casei 85% · 85% Bifidobacterium lactis vs Lactobacillus rhamnosus 85% · 90% Lactobacillus rhamnosus vs Saccharomyces boulardii 90% · 80% Bifidobacterium longum vs Lactobacillus rhamnosus 85% · 90%

All 24 compounds

dose · evidence · documented interactions
Lactobacillus acidophilus Lactose tolerance & vaginal health 1-20 billion CFU A 6 Lactobacillus rhamnosus Immune support & antibiotic protection 1-20 billion CFU A 6 Bifidobacterium lactis Digestive regularity & lactose tolerance 1-20 billion CFU A 6 Saccharomyces boulardii Antibiotic protection & pathogen resistance 250-500mg A 6 Bifidobacterium longum Digestive & immune health 1-20 billion CFU A 6 Lactobacillus casei Digestive health & immune support 1-20 billion CFU A 6 Bifidobacterium animalis Digestive regularity & immune support 1-20 billion CFU A 6 Multi-Strain Probiotic Digestive & immune health 10-50 billion CFU A 6 Bifidobacterium bifidum Digestive & women's health 1-20 billion CFU A 6 Lactobacillus plantarum IBS relief & nutrient absorption 5-20 billion CFU A 6 Saccharomyces cerevisiae Nutritional support & B vitamins 1-2 tablespoons B 6 Bacillus coagulans IBS relief & protein absorption 1-2 billion CFU A 6 Bifidobacterium infantis IBS relief & gut inflammation 1-20 billion CFU A 6 Lactobacillus paracasei Immune support & allergy management 1-10 billion CFU A 6 Lactobacillus reuteri Digestive health & bone support 1-10 billion CFU A 6 Bacillus clausii Antibiotic protection & immune support 2-4 billion CFU A 6 Bifidobacterium breve Immune balance & allergy prevention 1-20 billion CFU A 6 Lactobacillus helveticus Stress reduction & cardiovascular support 1-10 billion CFU A 6 Lactobacillus bulgaricus Lactose digestion & yogurt benefits Through yogurt consumption B 6 Spore-forming probiotics Comprehensive stability & multi-target support 1-5 billion CFU B 6 Bacillus subtilis Digestive enzymes & cardiovascular support 1-3 billion CFU B 6 Clostridium butyricum Butyrate production & gut barrier support 1-3 billion CFU B 6 Digestive yeasts Digestive enzyme support & gut balance 1-2 capsules C 6 Kefir yeasts Fermentation support & gut health 1-2 capsules C 6

Common questions

Which probiotics form is best absorbed?

Bacillus coagulans leads at 95% bioavailability. Absorption is the number that decides how much of the dose reaches you, so it matters more than the milligrams on the label.

What is the difference between probiotics forms?

They deliver the same active compound but differ in absorption, tolerance and cost per month. The cheaper forms are usually the ones absorbed least.