If you only want to maintain vaginal health, you may take this one:
https://www.nowfoods.com/products/supplements/womens-probiotic-20-billion-veg-capsules
But if you also have chronic or occasional UTI issues, you may take this one:
https://www.neueve.com/products/corsaria
We have tested these products and have confirmed the viability of their probiotic strains. Some other brands of probiotic products provide dead bacteria or their products have a short shelf life. But these products provide good live probiotics.
Our customers in Australia recommend "Lifespace Urogen Probiotics for Women." We have not tested this one, but our customers in Australia used it and said it worked well for them. It is made in Australia but you can get it online here:
https://www.lifespaceprobiotics.com/products/urogen-probiotic-for-women