Can you add water when the medicine is boiled dry?

If

the Chinese

medicine is not boiled, and belongs to the stone class of Chinese medicine, usually can add water to boil, will not affect the therapeutic effect of the drug, do not worry too much. But if the Chinese medicine is boiled paste or volatile important, such as mint, angelica, Schizonepeta, Polygala, etc., usually can not add

water to boil again, so as not to affect the therapeutic effect of the disease.