Pregnancy Probiotics Optibac (30). Especially for pregnant women, from conception through to birth and early motherhood, to help support digestive and immune function and vaginal health, as well as general well-being.. Ingredients. Each capsule provides 12 billion CFU + 30 mg prebiotic FOS - the billions count is guaranteed until end of expiry. Contains premium probiotic strains which have been trialed in hundreds of pregnant and breastfeeding women. Bifidobacterium lactis HN019 has been shown to help support immune health and overall digestive function, including improving regularity. Lactobacillus acidophilus La-14® and Lactobacillus rhamnosus HN001 have been proven to reach the vaginal tract and shown to support vaginal health. L. rhamnosus HN001 has been shown to stimulate immunological responses. Suitable for pregnant women from conception through to birth and for breastfeeding and non-breastfeeding women post birth (6 months+). Contains Probiotic Strains. Lactobacillus rhamnosus HN001. Lactobacillus acidophilus La-14. Bifidobacterium lactis HN019