There is no research on the hazards of using toadstools externally. Toadstools are poisonous and should not be used externally in excessive dosage. Toadflax is the dried secretion of the Chinese giant toad (Bufo garzetta) or the black-orbital toad (Bufo nigricollis) of the family Bufoideae, which is a medicine for extracting toxins, attacking decay and regenerating muscles. It enters the heart meridian and is pungent in flavor and warm in nature. It can be used internally and externally, but do not overdose internally, and do not use it externally for eyesight. Toad biscuit has the effect of detoxifying, relieving pain, opening the orifices and waking up the mind (opening the brain orifices and waking up the mind), and is long used in the treatment of sore throat, carbuncle and gangrene (a kind of poisonous sores, occurring on the surface of the body, limbs, internal organs of the acute suppurative disease), furuncle (mostly occurring in the limbs or facial sores, the shape of a small root base deep, such as nails, hard), heatstroke and fainting, abdominal pain and vomiting and diarrhea, etc.. Pregnant women are not recommended to take Toad Crisp. Adverse effects of Toad Crisp are not known. If needed, please use it under the guidance of a professional Chinese medicine practitioner.