You can make tea and drink it together without being poisoned.

Roselle is sour and cool, and has the effects of astringing the lungs and relieving coughs, lowering blood pressure, and relieving alcoholism;

Rose flowers regulate qi and relieve depression, and harmonize blood and disperse blood stasis. It can treat liver and stomach qi pain, Xinjiu wind paralysis, vomiting and hemoptysis, irregular menstruation, red and leucorrhea, dysentery, mastitis, swollen poison, etc.;

Lycium barbarum nature and flavor: sweet, flat;

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It has the functions of nourishing the liver, nourishing the kidneys, and moistening the lungs;

Red dates are sweet and warm in nature, and return to the spleen and stomach meridian. Pharmacology has found that red dates contain rich nutrients such as protein, fat, sugar, organic acids, vitamin A, vitamin C, various trace amounts of calcium, and amino acids.

Theoretically speaking, these four drinks are not incompatible with each other and can be made into tea together.

However, rosella is sour and cool, so try to eat it separately from the other three drinks. Several drinks have different effects, and eating them together with different tastes will affect the effect of these drinks.