Visiting Osaka in a few days
Apologies in advance if this post is not allowed here
Any ideas how to buy this?
[4-6] Polysaccharide-K (PSK) or krestin, from the mushroom T. versicolor, is an approved mushroom product used for cancer treatment in Japan. PSK is a proprietary formulation from the Kureha Corporation.
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They say Krestin was already discontinued in 2017.
[https://www.mixonline.jp/tabid55.html?artid=55291](https://www.mixonline.jp/tabid55.html?artid=55291)