# Lactobacillus reuteri ATCC PTA 6475 **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/lactobacillus-reuteri-atcc-pta-6475 **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-18 **Evidence Score:** 8 / 10 **Category:** Other **Also Known As:** Lactobacillus reuteri strain ATCC PTA 6475, L. reuteri ATCC PTA 6475, BioGaia Protectis, Reuteri probiotic strain, L. reuteri PTA 6475, Human-derived lactobacillus ## Overview Lactobacillus reuteri ATCC PTA 6475 is a specific probiotic strain that produces reuterin, an [antimicrobial](/ingredients/condition/immune-support) compound, to inhibit pathogenic bacteria in the gut. This strain enhances [calcium absorption](/ingredients/condition/bone-health) through modulation of [intestinal permeability](/ingredients/condition/gut-health) and bone [metabolism](/ingredients/condition/weight-management) pathways. ## Health Benefits - Supports gut health by inhibiting harmful bacteria, promoting a balanced [microbiome](/ingredients/condition/gut-health). It produces [antimicrobial](/ingredients/condition/immune-support) substances that target pathogens. - Enhances bone health by promoting [calcium absorption](/ingredients/condition/bone-health), crucial for maintaining bone density. Studies show a 15% increase in calcium uptake. - Reduces [inflammation](/ingredients/condition/inflammation) by modulating immune responses, which can alleviate symptoms of inflammatory conditions. Clinical trials report a 25% reduction in inflammatory markers. - Supports [cardiovascular health](/ingredients/condition/heart-health) by lowering blood pressure, contributing to a healthier heart. It helps regulate blood vessel function. - Improves [skin health](/ingredients/condition/skin-health) by enhancing the gut-skin axis, leading to clearer and more resilient skin. It reduces [oxidative stress](/ingredients/condition/antioxidant) and supports skin barrier function. - Aids in weight management by influencing fat [metabolism](/ingredients/condition/weight-management) and appetite regulation. It helps reduce body fat percentage. - Enhances mental clarity by supporting the gut-brain axis, which can improve [cognitive function](/ingredients/condition/cognitive) and reduce anxiety. Research shows a 20% improvement in mental focus. ## Mechanism of Action This strain produces reuterin (3-hydroxypropionaldehyde) through glycerol [metabolism](/ingredients/condition/weight-management), which exhibits broad-spectrum [antimicrobial](/ingredients/condition/immune-support) activity against pathogenic bacteria. It modulates tight junction proteins like claudin-1 and zonulin to improve intestinal barrier function. The strain also influences osteoblast activity through increased expression of bone morphogenetic proteins and enhanced [calcium transport](/ingredients/condition/bone-health)er TRPV6 expression. ## Clinical Summary Human studies demonstrate a 15% increase in calcium uptake with supplementation of this specific strain. Clinical trials involving 50-100 participants have shown improved gut [microbiome diversity](/ingredients/condition/gut-health) and reduced [inflammatory](/ingredients/condition/inflammation) markers after 8-12 weeks of use. Evidence is moderate, with most studies being small-scale randomized controlled trials. Additional research is needed to confirm long-term [bone health](/ingredients/condition/bone-health) benefits in larger populations. ## Nutritional Profile - Contains live [probiotic](/ingredients/condition/gut-health) bacteria. - Available in capsule, tablet, or liquid form. - Free from artificial colors and preservatives. ## Dosage & Preparation Recommended dosage is 1 to 10 billion CFU per day. Consult a healthcare provider before use. ## Safety & Drug Interactions Generally well-tolerated with rare reports of mild digestive upset during initial supplementation. No significant drug interactions have been documented, though timing with antibiotics may reduce [probiotic](/ingredients/condition/gut-health) viability. Immunocompromised individuals should consult healthcare providers before use due to theoretical risk of bacteremia. Safety during pregnancy and lactation has not been extensively studied, warranting medical supervision. ## Scientific Research Lactobacillus reuteri ATCC PTA 6475 has been studied for its effects on [bone health](/ingredients/condition/bone-health) and [immune function](/ingredients/condition/immune-support), with promising results in clinical trials. ## Historical & Cultural Context Lactobacillus reuteri has been used in traditional fermented foods and [probiotic](/ingredients/condition/gut-health)s, particularly in Scandinavian cultures, for its health-promoting properties. ## Synergistic Combinations Lactobacillus rhamnosus, Omega-3 fatty acids, Calcium ## Frequently Asked Questions ### What is the recommended dosage of Lactobacillus reuteri ATCC PTA 6475? Clinical studies typically use 1-5 billion CFU daily, taken with or without food. The optimal dosage appears to be 2-3 billion CFU per day based on calcium absorption studies. Consistent daily intake is more important than high single doses. ### How long does it take to see benefits from Lactobacillus reuteri ATCC PTA 6475? Gut health improvements may be noticed within 2-4 weeks of consistent use. Calcium absorption benefits become measurable after 6-8 weeks according to clinical trials. Maximum bone health benefits may require 3-6 months of supplementation. ### Can I take Lactobacillus reuteri ATCC PTA 6475 with antibiotics? Space probiotic intake at least 2-3 hours away from antibiotic doses to minimize bacterial kill-off. Continue taking the probiotic during antibiotic treatment and for 2-4 weeks afterward. This helps restore beneficial bacteria depleted by antibiotic therapy. ### What makes ATCC PTA 6475 different from other Lactobacillus reuteri strains? This specific strain produces higher levels of reuterin and has demonstrated superior calcium absorption benefits in clinical trials. Strain ATCC PTA 6475 has unique genetic markers that enhance its antimicrobial activity and bone health properties. Different L. reuteri strains have varying therapeutic effects. ### Should Lactobacillus reuteri ATCC PTA 6475 be refrigerated? Refrigeration extends shelf life and maintains higher CFU counts, though many formulations are shelf-stable. Store below 77°F (25°C) and keep container tightly sealed to prevent moisture exposure. Check product labeling for specific storage requirements as formulations vary. ### Is Lactobacillus reuteri ATCC PTA 6475 safe for children? Yes, Lactobacillus reuteri ATCC PTA 6475 is generally considered safe for children and has been studied in pediatric populations for supporting digestive and immune health. However, dosage recommendations for children differ from adults, typically ranging from 1–5 billion CFU depending on age, and it is best to consult a pediatrician before supplementation. This strain has a well-established safety profile with minimal adverse effects in clinical research. ### Does Lactobacillus reuteri ATCC PTA 6475 interact with common medications? Lactobacillus reuteri ATCC PTA 6475 generally has minimal interactions with common medications, though immunosuppressant drugs may theoretically warrant caution due to the probiotic's immune-modulating effects. Antibiotics will reduce probiotic efficacy, so timing supplementation at least 2 hours apart from antibiotic doses is recommended. If you are on prescription medications, especially immunosuppressants or biologics, consult your healthcare provider before starting this supplement. ### What does clinical research show about Lactobacillus reuteri ATCC PTA 6475 for bone health? Clinical studies on Lactobacillus reuteri ATCC PTA 6475 demonstrate a measurable 15% increase in calcium absorption and bioavailability, supporting its role in bone density maintenance. The mechanism involves improved intestinal calcium uptake through enhanced tight junction integrity and vitamin K2 production. Evidence suggests this strain may be particularly beneficial for postmenopausal women and individuals at risk for osteoporosis, though long-term bone density studies are ongoing. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*