Da Zao (大枣; Dà Zǎo; Latin: Jujubae Fructus; English: jujube / Chinese date) is the dried ripe fruit of Ziziphus jujuba Mill. In Chinese medicine it is a qi-tonifying herb that is also used as food. It is sweet and warm, enters the Spleen, Stomach, and Heart channels, and its core actions are to tonify the middle and boost qi, and to nourish blood and calm the spirit. The common name “red date” usually means this fruit. It is not Suan Zao Ren (sour jujube seed), which more strongly nourishes the Heart, calms the spirit, and constrains sweat. It is not the Mediterranean date (Phoenix dactylifera). That is a palm fruit and does not share Da Zao’s channel entry.
It is used most often for three patterns:
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Spleen deficiency with poor appetite — fatigue, loose stools, sallow complexion
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Blood deficiency with visceral agitation — restlessness, poor sleep, unexplained weeping or laughing
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Harmonizing a formula — protecting the middle and softening harsh or bitter-cold herbs
Split or cut the fruit before decoction. The usual dose is 6–15 g (about 3–10 fruits, depending on size). Damp fullness, phlegm-damp obstruction, toothache from decay, and middle fullness with accumulation are a poor match for large daily amounts. Sweet warmth can cloy. This is not an unlimited snack.
After overwork, worry, and irregular meals, fatigue, light sleep, and swinging moods are common. Da Zao is sweet-warm. It tonifies the middle and calms the spirit, which is why it appears in Gan Mai Da Zao Tang, Gui Pi Tang, and Zhi Gan Cao Tang. It tonifies more than it moves. Bloating, a greasy coating, and copious phlegm get worse if more dates are added.
Da Zao is not a catch-all blood-and-qi tonic. In interior damp-heat, qi stagnation with bloating, or when sugar intake must be limited, using it alone can generate dampness and stuff the middle. Food use or formula use should follow constitution and a licensed Chinese medicine practitioner’s pattern diagnosis.