probiotics institute genom logo

Lactobacillus acidophilus, LA-5®

– a well-documented probiotic strain

LA-5 probiotic strain
4 Min read

Lactobacillus acidophilus, LA-5® (hereafter referred to by use of the trademark LA-5®) is a well-studied probiotic strain, with results reported in over 150 scientific publications. 


When consumed in combination with the Bifidobacterium, BB-12® probiotic strain, LA-5® has been associated with supporting digestive health. 

Chr. Hansen’s Lactobacillus acidophilus, LA-5® is well-studied

The probiotic strain Lactobacillus acidophilus, LA-5® comes from our collection of dairy cultures at Chr. Hansen. LA-5® has been granted QPS (Qualified Presumption of Safety) status from the European body EFSA and is safe for human consumption.1 It has been used in food and dietary supplements since 1979.
The LA-5® strain is a well-researched probiotic and has been described in more than 150 scientific publications. More than 60 of these publications describe data from human clinical studies primarily conducted in adults and the elderly across various areas of health. These research studies primarily investigated the LA-5® strain in combination with the Bifidobacterium, BB-12® strain.
LA-5 probiotics for the whole family

Supporting digestive health 

Consuming the LA-5® probiotic strain, in combination with the Chr. Hansen Bifidobacterium, BB-12® strain, may benefit the digestive system. Specifically, consumption of these two strains together has been associated with:
• More regular bowel movements2, 3
• Shorter episodes of occasional loose stools that can occur as a result of some health care interventions4, 5, 6, 7, 8
• Balancing gut bacteria7, 9

Consult a health care professional to find out more about supporting digestive health with probiotic strains such as LA-5®.

LA-5® and BB-12® are registered trademarks of Chr. Hansen A/S.

The article is provided for informational purposes regarding probiotics and is not meant to suggest that any substance referenced in the article is intended to diagnose, cure, mitigate, treat, or prevent any disease.

Active lifestyle and LA-5 probiotic strain
Our Chr. Hansen probiotic strains

At Chr. Hansen, our strains are backed by science. All of our probiotic strains are supported by clinical documentation. Learn more about the beneficial effects our strains have on different health areas.


References Open Close

  1. EFSA Panel on Biological Hazards (BIOHAZ). EFSA Journal. 2015;13:4331
  2. Shioya M, et al. Journal of Nutritional Food. 2000:33-4.
  3. Shioya M, et al. Journal of Nutritional Food. 2000:18
  4. Chatterjee S, et al. J Assoc Physicians India. 2013;61(10):708-12. (PubMed)
  5. de Vrese M, et al. J Dairy Res. 2011;78(4):396-403. (PubMed)
  6. Sheu BS, et al. Am J Clin Nutr. 2006;83(4):864-9. (PubMed)
  7. Sheu BS, et al. Aliment Pharmacol Ther. 2002;16(9):1669-75. (PubMed)
  8. Linn YH, et al. Probiotics Antimicrob Proteins. 2019;11(2):638-47. (PubMed)
  9. Nord CE, et al. Clin Microbiol Infect. 1997;3(1):124-32. (PubMed)
Left Strain icon

What are


Learn more about what probiotics are and how they are associated with health benefits

What to

look for

See key tips on how to choose a high-quality probiotic product


Read more about some of the world’s most documented probiotic strains and their diverse health benefits

Right Strain icon