Lactobacillus Acidophilus is among the most common species naturally found in the human gut microbiome.* This probiotic may help support a normal immune response.* It may also be helpful for those looking to support urinary health, as it helps populate the digestive and urinary tract with beneficial bacteria, creating a more acidic environment that helps displace potentially harmful ones.* Additionally, the Lactobacillus species of probiotics may support normal hair, skin, and nail thickness and growth.*