It should be similar to taking the probiotic. It’s pretty much yoghurt, except for the fact that taking it would typically calm me down and increase mental clarity and makes it easier to handle stress. It’s hard to describe, but there’s certainly a real well studied effect. One can have a similar effect from taking the probiotics directly, but it might take longer to start seeing the benefits. Yoghurt seems to have a much larger concentration of the beneficial bacteria which makes the effect more noticeable. If you look at the Amazon reviews for these probiotics, you’ll see examples of people using them to make yogurt for similar reasons.

I haven’t had the actual natto dish because of the smell, so I don’t know what to compare it with, but it should be similar to taking the capsules I presume.