What is Long Yan Rou? Are Da Zao, Suan Zao Ren and Yi Zhi Ren the same?
Official Long Yan Rou (龙眼肉) is the dried aril of Dimocarpus longan. The pharmacopoeial name is Longan Arillus; it is also called dried longan flesh. The old alias “yi zhi” is not pharmacopoeial Yi Zhi Ren. Da Zao is sweet-warm: supplements the center, boosts qi, nourishes Blood and calms the spirit. Suan Zao Ren is sweet-sour and neutral: nourishes the Heart, supplements the Liver, calms the spirit, constrains sweat and generates fluid, and must be crushed. Yi Zhi Ren is acrid-warm: warms the Kidney, secures essence, reduces urine, warms the Spleen, stops diarrhea and contains saliva. Write Long Yan Rou. Use caution in phlegm-fire and damp stagnation.
What are the TCM properties and traditional uses of Long Yan Rou?
According to the Chinese Pharmacopoeia, Long Yan Rou is sweet and warm, enters the Heart and Spleen channels, and acts to supplement the Heart and Spleen, nourish Blood and calm the spirit. It is used for qi and Blood insufficiency, palpitations, forgetfulness and insomnia, and sallow complexion from Blood vacuity. Sweet and warm, it suits Heart-Spleen dual vacuity—not internal phlegm-fire, damp stagnation with fullness, or yin-vacuity fire.
Does Long Yan Rou need special processing? Can Da Zao replace it?
Harvest when the fruit is ripe in summer and autumn, dry, remove the shell and seed, and sun-dry until it is no longer sticky. Jujube leans to supplementing the center and boosting qi; it cannot replace supplementing the Heart and Spleen and nourishing Blood to calm the spirit by equal weight. Fresh longan is not equal-weight dried pieces. Commercial longan tea is not equal-weight pieces.
What is the usual dosage? Can it be drunk daily as a calm tea?
The pharmacopoeial decoction dose is 9–15 g. It is not a four-season “longan calm tea.” Phlegm-damp only stagnates further as it supplements. Heart-Spleen dual vacuity needs a practitioner to name a short course; it does not replace sleep and blood assessment.
What are the contraindications? Can it be used in pregnancy?
Unsuitable in internal phlegm-fire, damp stagnation and retained fluid, qi stagnation with fullness, and yin-vacuity fire. Pregnancy needs a practitioner’s assessment; do not take a large warming supplement on your own. Stop if dry mouth, sore throat, abdominal distension or loose stool appears. Palpitations with chest pain are an emergency.
Can Long Yan Rou supplement the Heart and Spleen, nourish Blood and calm the spirit?
It can help palpitations and insomnia from overthinking and taxation damaging the Heart and Spleen. It joins ginseng, astragalus, atractylodes, Chinese angelica, spiny jujube seed, polygala and aucklandia in Gui Pi Tang. It supplements the Heart and Spleen, nourishes Blood and calms the spirit—not a specific for every insomnia or every anemia.
Can Long Yan Rou be drunk daily as a Blood, calm or wit tea?
Heart-Spleen Blood vacuity may enter a short formula; phlegm-fire only heats further as it supplements. “Longan must calm the spirit and boost the wits” does not replace sleep assessment. Supplementing the Heart and Spleen, nourishing Blood and calming the spirit should name 9–15 g.
How do you choose among Long Yan Rou, Da Zao, Suan Zao Ren, Dang Gui and Ren Shen?
Longan aril is sweet-warm: supplements the Heart and Spleen, nourishes Blood and calms the spirit—Heart-Spleen dual vacuity, forgetfulness and insomnia. Jujube is sweet-warm: supplements the center, boosts qi, nourishes Blood and calms the spirit—disharmony of nutritive and defense. Spiny jujube seed is sweet-sour and neutral: nourishes the Heart, supplements the Liver, calms the spirit and constrains sweat—more specific for vacuity vexation and sleeplessness. Chinese angelica is sweet-acrid and warm: supplements Blood, invigorates Blood, regulates the menses and stops pain—Blood vacuity with stasis. Ginseng is sweet, slightly bitter and slightly warm: greatly supplements original qi, restores the pulse, secures collapse, calms the spirit and boosts the wits. Heart-Spleen Blood vacuity favors Long Yan Rou (Gui Pi Tang); nutritive-defense disharmony favors Da Zao; vacuity vexation with night sweat favors Suan Zao Ren; Blood-vacuity dysmenorrhea favors Dang Gui; qi vacuity verging on collapse favors Ren Shen. They may be paired; phlegm-fire and yin-vacuity fire forbid large Long Yan Rou.
Which herbs is Long Yan Rou combined with? What are the representative formulas?
Heart-Spleen dual vacuity joins ginseng, astragalus, atractylodes, Chinese angelica, poria spirit, spiny jujube seed, polygala and aucklandia in Gui Pi Tang. Write Long Yan Rou 9–15 g; do not replace nourishing Blood and calming the spirit with jujube by equal weight.
How do you choose and store Long Yan Rou?
Choose longitudinally split arils, brown and translucent, soft and moist, faintly aromatic and sweet. Moldy, moth-eaten, sour, shell- or seed-containing, or caked lots are discarded. Store ventilated and dry against moisture and moths. Buy pharmacopoeial Long Yan Rou; do not replace supplementing the Heart and Spleen, nourishing Blood and calming the spirit with jujube or alpinia fruit by equal weight.