Probiotics can improve the balance of your microbiome – the bacterial strains that make up your gut and vagina. Not all probiotics are the same. For vaginal microbiome balance, the probiotic should include the primary bacterial strain that is specific for the vagina called Lactobacillus Crispatus.
This specific strain among others must produce Lactic Acid to properly balance your vaginal microbiome. The strains should have around 100 billion in quantity and require long term use in order to colonize (grow the good bacteria) in the vagina. When your vaginal microbiome is properly balanced, it will help you maintain a PH of 4.5 and can support uterine health.