Properly extracted functional mushroom extracts have been used for hundreds of years very safely. Always be sure you are buying a product that has been properly extracted and is not just dried and powdered (unextracted).
All of FreshCap’s products are thoroughly extracted. With hundreds of years of safe use, there have been only a few documented cases of hepatotoxicity and this was after they switched from traditionally extracted Reishi to unextracted powder form.
Always follow suggested serving sizes and speak to your doctor if you are taking any medication and have any medical conditions.