| Grifron®-Pro Maitake D-Fraction® (Tincture) is a purified and standardized extract from Maitake mushroom (Grifola frondosa) with professional strength (the most purified and concentrated version of the D-Fraction line). It is the product used in major scientific studies in the US, Japan and other countries. It is the product often referred to by many prominent healthcare professionals in many books as a potent immune booster.
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