My friend uses this for himself and his children. Whenever he runs out, they all start to get a bit of eczema again until they resume, despite continuing to eat things like natto, filtering drinking and showering water, along with dehumidifiers for anti-mould.
I think this 5-type is the best option. I'm trying the other types at the moment, but I think the 5type is the best.
I know it's expensive, but I think it's worth it.
I take mine on an empty stomach in the morning with a salad and other prebiotic foods. It just helps me stay regular; for me the effect is more subtle, helping me as part of an overall strategy to build gut resilience.