1, radish

radish has a cool nature, with the role of the gas and stagnation, cooked huang and radish with food may react and affect the nutrients of cooked huang, affecting the gastrointestinal absorption of cooked huang efficacy, so that the efficacy of cooked huang can not be given full play to achieve the expected therapeutic effect.

2, three white

Three white refers to the onion white, leek white, scallion white, "the essence of this herb collection" is also recorded: "avoid radish, onion white, leek white, scallion white," because the "three white" smell of pungent dispersal, go away the effect of the stronger, and the ripened dihuang To complement the main, cooked dihuang and three white with food will reduce the amount of cooked dihuang tonic effect.