Lactobacillus acidophilus is one of the most widely studied probiotic strains, naturally found in the human gut and commonly delivered through yogurt cultures and supplement capsules. Research suggests it may support several areas of health, including maintaining a balanced intestinal environment, easing symptoms of lactose intolerance by aiding lactose digestion, and helping manage occasional diarrhea, particularly antibiotic-associated types. Studies also indicate potential benefits for vaginal microflora balance, modest contributions to cholesterol metabolism, and support for certain aspects of immune function, though results vary across populations and study designs. While the overall body of evidence is encouraging, researchers continue to investigate the specific mechanisms and optimal conditions under which this well-characterized strain delivers its most meaningful effects.
Compare this supplementResearch suggests that Lactobacillus acidophilus may support gut health through several mechanisms, including favorab...
View studies →Research suggests that Lactobacillus acidophilus, particularly when delivered through fermented dairy products or spe...
View studies →Research suggests that Lactobacillus acidophilus and related Lactobacillus strains play a meaningful role in maintain...
View studies →Research suggests that Lactobacillus acidophilus may support immune function across multiple biological contexts, wit...
View studies →Research suggests that Lactobacillus acidophilus, particularly when combined with other probiotic strains, may contri...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 99,999,999.99 CFU | Daily | cholesterol management | Range observed in RCTs examining LDL and total cholesterol reduction |
| Capsule | 99,999,999.99 CFU | Daily | diarrhea management and gut health restoration | Higher doses used in RCTs for acute diarrhea and antibiotic-associated diarrhea |
| Capsule | 99,999,999.99 CFU | Daily | general gut health and immune function | Common range in clinical trials for general probiotic supplementation |
| Capsule | 99,999,999.99 CFU | Twice daily | lactose intolerance | Doses used in clinical studies examining lactose digestion improvement |
| Capsule | 99,999,999.99 CFU | Daily | vaginal health and bacterial vaginosis | Doses used in clinical trials for vaginal microbiome restoration |
| Powder | 99,999,999.99 CFU | Daily | general gut health and immune function | Powder form commonly used in pediatric and general probiotic studies |