Water decoction is to put water and medicine together. You can soak them for a while and then fry them slowly, instead of waiting for the water to boil before putting the medicine.
Agree with the analysis of friends upstairs.
But this medicine contains realgar, arsenic sulfide As2S3 and a small amount of magnesium and iron.
Its effects are non-toxic, anti-cancer, expectorant, sedative, insecticidal, anti-inflammatory and detumescence. Side effects Chronic poisoning will damage the physiological functions of liver and kidney. So be sure to decoct the medicine according to the doctor's requirements. Don't say anything else!