Iron pill for the heart wind fever, vigilance, delirium, etc. has a certain therapeutic effect, it is not clear that its contraindications, the specific use of the doctor’s orders. The iron pill is an ancient Chinese medicine prescription, the main components of the drug include iron powder (research), snake yellow (calcined, out of the fire poison), dansha (research), musk (research), oxalis (research), gold foil, silver foil, and so on. Each of the above medicines is minced, then ground together and made into pills with corn paste, such as the size of a sycamore seed. The specific contraindications to the use of this formula and what adverse reactions may occur after use are not clear. This formula contains a variety of minerals, so the specific use of the iron pill should be under the guidance of specialists, not unauthorized use of drugs to avoid adverse effects. Patients who feel unwell are advised to consult a doctor in time to avoid delays.