Generally speaking, medicinal liquids with tonic effects are best taken about 1 hour after meals, or in the morning and evening.

Red dates are known as the king of vitamins and can nourish qi and blood and harmonize the spleen and stomach; wolfberry is a good medicine for nourishing the kidneys and lungs, nourishing the liver and improving eyesight; longan is a good product for nourishing blood, calming the nerves, and strengthening the brain and intelligence; Brown sugar has the effects of replenishing qi, strengthening the spleen and warming the stomach.

Judging from the efficacy, properties and taste of the above four medicines, there is no conflict or fear. Drinking them together with water instead of tea has certain effects of clearing the liver and improving eyesight, strengthening the spleen and nourishing the stomach.