Shiitake mushroom extract is a concentrated form of Lentinula edodes. Manufacturers standardize it to compounds like beta-glucans for immune health and eritadenine to help manage cholesterol. People take it in capsules, powder, or liquid with a meal. This aids absorption and lessens the chance of stomach upset.
Be cautious if you use blood-thinning or diabetes medications, or if you have surgery scheduled. Shiitake can affect bleeding time and blood sugar levels.