Postbiotic L-137

L-137 is a heat-treated Lactobacillus plantarum strain, classified as both a postbiotic and immunobiotic, delivering strong immune benefits with excellent stability. L-137 has been clinically shown to boost immune function, improve skin hydration, reduce fatigue, and support digestive and oral health, all from a small 50 mg daily dose. Unlike probiotics, L-137 is heat- and acid-stable, offering a 5-year shelf life and suitability for tablets, soft gels, beverages, and even baked goods. Multiple human clinical studies confirm its role in reducing upper respiratory tract infections, improving quality of life, and supporting immune health under daily stress. With immunity and well-being at the top of consumer needs, L-137 is a highly versatile solution ready for your next formulation.