Both chaga and reishi mushrooms have been found to have a range of positive effects. Which is better, depends on what result you're looking for. Chaga mushrooms are packed with vitamins and minerals. They're often used to support the immune system and fight inflammation. Reishi mushrooms are also used as immune system support, but consumers also take them to reduce stress and fatigue. Instead of choosing between them, why not take a multi-mushroom supplement like Mushroom Complex 6 from Time Health.