We make our Rejuvenate therapeutic grade mushroom blend with equal amounts of extract from the six medicinal mushrooms known to have the highest percentages of ergothioneine, terpense, and triterpenes, and triterpenes - anti-aging superstars! The combination of oyster, chaga, tremella, lion's mane, shiitake, and maitake mushroom extracts makes a powerful anti-aging blend that can help to fight against many age-related conditions.