People with lactose intolerance lack the digestive enzyme lactase. They are unable to break down milk sugar (lactose; a carbohydrate) in their diet, resulting in digestive disorders/abdominal discomfort.

Lactic acid bacteria, on the other hand, do not produce lactose (milk sugar), but lactic acid; this is a completely different substance than lactose.

Lactitol, a substance that is added in very small quantities in the Vagisan ProbioFlora Lactic Acid Bacteria​​​​​​​ Vaginal Capsules as "provisions" for the lactic acid bacteria, is also different from lactose. Lactitol is approved as a sugar substitute and is used in foods; there is no indication that it should not be suitable for people with lactose intolerance.

It should also be remembered that Vagisan ProbioFlora Lactic Acid Bacteria Vaginal Capsules are applied in the vagina and therefore no components of the product enter the intestine. Therefore, after using Vagisan ProbioFlora Lactic Acid Bacteria in the vagina, people with lactose intolerance are not likely to experience indigestion.