Medicinal mushrooms have been used for thousands of years very safely. All of our extracts are properly and thoroughly extracted and tested.
On rare occasions some people can have allergies or sensitivities to mushrooms, however, this is very rare. Also, if you are taking any medication or have any preexisting conditions it is best to consult a qualified healthcare practitioner as there can be interactions with certain medications. If you are aware of any mushroom allergies or are currently taking any medication for or have a condition then you should assess the suitability of taking a mushroom supplement on an individual level.
Mycology Press is a great resource to use if you would like to read more about each mushroom.