Maitake (Grifola frondosa) has been prized in traditional Japanese Herbology for hundreds of years. Modern science has identified in Maitake Proteoglucan, Beta-1,3 glucan and Beta-1,6 glucans combined with protein, as an active constituent to support the immune system. Maitake D-Fraction is a standardized form of pure and active Proteoglucan, specially developed to be optimal for oral administration.
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