Lactobacillus acidophilus — answers to acidophilus, a probiotic bacterium
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A species of lactic-acid-producing bacteria naturally found in the human gut and in fermented foods like yogurt. In supplements it is added as live, cultured organisms, usually measured in colony-forming units (CFU) rather than by weight.
Why it’s used
Taken as a probiotic, often to support digestive comfort or general gut balance, particularly around antibiotic use or mild digestive upset.
What the evidence says
Clinical research on probiotics is strain-specific and mixed; some trials of L. acidophilus and related strains show modest benefit for certain digestive complaints, while others show none. Because effects vary by strain, dose, and formulation, results from one product do not necessarily apply to another.
Context
Studies typically report dosing in colony-forming units (often billions of CFU per day) rather than milligrams, so no gram-based dose range applies. Trial populations and durations vary widely across the probiotic literature.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.