The only functional mushrooms that come WITHOUT a Health Canada caution statement regarding pregnancy and breastfeeding are REISHI, SHIITAKE, and MAITAKE. All of the others carry this Health Canada caution statement "Consult a health care practitioner/health care provider/health care professional/doctor/physician prior to use if you are pregnant or breastfeeding."  Clinical studies demonstrating the safety of consuming adaptogens/functional mushrooms during this stage of life are lacking as it is considered unethical to conduct trials on this population. It is best that you consult your health care provider prior to use if you are pregnant or breastfeeding.