Look at the ingredients of these wines.

Take Yu 'an as an example. Yu 'an focuses on "nourishing the heart, calming the nerves and improving sleep". The ingredients of this wine are lily (calming the heart and calming the nerves), Ziziphus jujuba seed (nourishing the heart and liver, calming the nerves and astringing the sweat), Prunella vulgaris (improving eyesight, clearing liver and purging fire), oyster (astringing yin and strengthening yang) and longan pulp (nourishing blood and calming the nerves, increasing wisdom and astringing the sweat). Search these medicinal materials on the Internet, and you can find out their efficacy. These are all real.

Moreover, the raw materials of Zhongyitang are from Yuzhou, Henan Province and Bozhou, Anhui Province, both of which are famous drug capitals, so there is no need to worry about the curative effect.