Lactobacillus helveticus is a lactic acid bacterium that lives naturally in the human gut. You also find it in fermented dairy like cheese and yogurt. It is often used as a probiotic supplement.
Early work on specific strains points to digestive benefits and a healthier gut microbiome. The Rosell-52 strain has been studied for its support of blood pressure that is already in the normal range.
Most people take it as a capsule or powder with a meal. Food helps the bacteria survive stomach acid. Probiotic potency depends on the strain and the manufacturer.
Anyone with a weakened immune system or a serious underlying illness should talk to a doctor before starting a probiotic. Mild digestive discomfort can happen early on.