I learned a lot about probiotic, and I am still learning... 1 capsule of probiotic contain the equivalent of probiotic as if you were filling this capsule with fermented food. Which mean that 1 tsp of yogurt would be equivalent to 7 capsules of probiotic. But, when we eat yogurt, we usually take a small bowl of it, which would be the equivalent of a whole bottle of probiotic! Probiotic stay in your guts and what is not use is flush out with your next bowel movement. Also, there is no way to know what is the % of the living probiotic that is in a capsule. Probiotic living micro-organism who need Sugar to fed on and liquid to hydrate and stay alive. Which make me wonder when they are trapped in a capsule for months if they are still alive? That may explain why some people won't see result taking probiotic in capsules. My suggestion is to take fermented food (yogurt, Kefir, Saukraut...) on a regular basis. That way you will be sure the probiotic are alive to do their work in your guts and you will take way more than what you would be taking by taking a capsule at a time.