The toadstool you are talking about is actually called plantain. Toadstool can cool the blood and detoxify the toxin. It is possible to prevent nosebleeds.

Effects

Clearing heat and diuretic, expectorant, cooling blood, detoxification. It is used in treating edema with low urine output, heat drenching and astringent pain, summer-dampness diarrhea and dysentery, cough with phlegm-heat, epistaxis, carbuncle, swelling and sores.

Contraindications

Psyllium hurt yin, all internal injuries, labor and tiredness, yang qi sinking, kidney deficiency and slippery semen, no dampness and heat should be taken with caution. In addition, it is best to avoid serving those with kidney deficiency and cold.