MICROBIOLOGICAL EVALUATION OF NON-PRESCRIPTION LACTOBACILLUS PRODUCTS
Since antibiotics kill the beneficial as well as the harmful gastrointestinal bacteria, we often want to replace the friendly organisms, particularly Lactobacillus acidophilus. Consequently, we purchase yogurt or other products claiming to contain it. Also, Lactobacillus acidophilus predominates in the normal vagina and women with vaginal infections are lacking in Lactobacilli. Since they were wondering about possible recolonization of the vagina, researchers tested the actual content of a number of non-prescription Lactobacillus products, most of which claimed to contain L. acidophilus. *
For the Lactobacillus to be effective in killing harmful organisms, it needs to be a strain that produces hydrogen peroxide (H2O2). Most products tested contained no Lactobacillus acidophilus and many were contaminated. "Thus, there was no yogurt, acidophilus powder, capsule, tablet, or milk that contained H2O2-producing L acidophilus in pure form."
*Hughes, Vicki L., and Sharon L. Hiller, "Microbiological Characteristics of Lactobacillus Products Used for Colonization of the Vagina," Obstetrics & Gynecology, 75(2): 244-8, February 1990.
Article from NOHA NEWS, Vol. XVIII, No. 4, Fall 1993, page 8.