But Chinese herbal pharmacists distinguish between this drained gall and the gall taken from wild bears, which they call "true gall." Drained gall, they say, lacks three active medicinal ingredients, and they have indeed shown that it is not as effective as true gall. But because it is only a tenth as expensive, consumers and pharmacies alike are gradually taking to using it for chronic illnesses.
有別於取自熊的完整熊膽﹘﹘中藥商稱為正膽，引流膽缺乏正膽中的三種有效成分，中藥商也證實引流膽藥效較差；但引流膽價錢只有正膽十分之一，若非急症，業者與病患也逐漸接受。