Long Yan Rou (龙眼肉): Longan Fruit in TCM — Nourishing Heart, Spleen, and Blood
Learn about Long Yan Rou (Dried Longan Fruit), the sweet TCM tonic herb that nourishes Heart Blood, strengthens Spleen Qi, calms the Shen, and improves sleep — a delicious remedy for anxiety, fatigue, and poor memory.
What Is Long Yan Rou?
Long Yan Rou (龙眼肉), literally “dragon’s eye flesh,” is the dried aril (flesh) of the longan fruit (Dimocarpus longan). One of the most delicious tonic herbs in TCM, it has been cherished for over 2,000 years as a sweet remedy that nourishes the Heart, strengthens the Spleen, calms the mind, and improves sleep.
The name comes from the fruit’s appearance — the round, dark seed peering through the translucent flesh resembles a dragon’s eye. Unlike most tonic herbs that are bitter or earthy, Long Yan Rou is naturally sweet, fragrant, and enjoyable to eat, making it one of the most accessible and patient-friendly herbs in the entire TCM pharmacopeia.
Basic Information
| Property | Details |
|---|---|
| Chinese name | 龙眼肉 (Lóng Yǎn Ròu) |
| English name | Dried Longan, Dragon’s Eye |
| Pharmaceutical name | Longan Arillus |
| Source | Dried aril of Dimocarpus longan |
| Nature | Warm |
| Flavor | Sweet |
| Meridian affinity | Heart, Spleen |
| Dosage | 10–15g (decoction); 5–10 pieces as food |
TCM Properties and Actions
Primary Actions
- Nourishes Heart Blood (补心脾血) — the primary function
- Strengthens Spleen Qi (健脾益气) — supports digestion and Qi production
- Calms the Shen (Spirit) (养心安神) — reduces anxiety, improves sleep
- Benefits memory (益智) — enhances cognitive function
The Heart-Spleen Connection
Long Yan Rou specifically targets the Heart-Spleen Blood deficiency pattern — one of the most common patterns in modern life:
| Organ | Role | Deficiency Symptoms |
|---|---|---|
| Spleen | Produces Blood | Fatigue, poor appetite, loose stools |
| Heart | Houses Blood and Shen | Palpitations, anxiety, insomnia, poor memory |
When Spleen cannot produce enough Blood → Heart doesn’t have enough Blood to nourish the Shen → anxiety, insomnia, palpitations. Long Yan Rou addresses this entire chain.
Clinical Applications
1. Insomnia and Poor Sleep (失眠)
- Difficulty falling asleep from overthinking and worry
- Light, restless sleep with frequent waking
- Dream-disturbed sleep
- Insomnia after illness or blood loss
- Combined with Suan Zao Ren (Sour Jujube Seed), Bai Shao, Dang Gui
2. Anxiety and Palpitations (心悸/焦虑)
- Heart palpitations, especially with stress
- Nervousness, unease, feeling “on edge”
- Palpitations after illness or overwork
- Combined with Fu Shen (Poria Spirit), Yuan Zhi (Polygala)
3. Poor Memory and Concentration (健忘)
- Forgetfulness, difficulty retaining information
- Mental fatigue from prolonged studying
- Poor concentration
- Traditional use for students preparing for exams
- Combined with Yuan Zhi, Shi Chang Pu (Sweetflag)
4. Fatigue from Blood Deficiency (血虚疲劳)
- Pale complexion, dizziness, lightheadedness
- Fatigue that worsens with exertion
- Post-illness or postpartum weakness
- Combined with Dang Gui, Shu Di Huang, Bai Shao
5. Recovery After Illness (病后调养)
- Weakness and poor appetite after illness
- Blood deficiency after surgery or blood loss
- General convalescence
- Long Yan Rou is gentle enough for debilitated patients
How to Use Long Yan Rou
As a Daily Food
- Direct eating: 5-10 pieces as a snack
- Tea: Steep 5-8 pieces in hot water with goji berries and red dates
- Porridge: Add to rice porridge (congee) for breakfast
- Soup: Add to chicken soup or bone broth
Longan-Nourishing Tea (桂圆红枣茶)
- Dried longan: 10g (5-8 pieces)
- Red dates (Hong Zao): 3-5 pieces
- Goji berries (Gou Qi Zi): 5g
- Steep in hot water for 10 minutes
- Drink 1-2 cups daily
- Excellent for Blood deficiency with fatigue and poor sleep
In Formulas
Gui Pi Tang (归脾汤) — Restore the Spleen Decoction
- Contains Long Yan Rou along with Dang Gui, Suan Zao Ren, Fu Shen, Bai Zhu, and others
- The most famous formula for Heart-Spleen Blood deficiency
- Treats: insomnia, anxiety, palpitations, poor memory, fatigue
Comparison with Similar Herbs
| Herb | Primary Action | Best For |
|---|---|---|
| Long Yan Rou | Nourishes Heart-Spleen Blood, calms Shen | Blood deficiency with anxiety and insomnia |
| Suan Zao Ren | Nourishes Heart-Liver Yin, calms Shen | Insomnia from Yin/Blood deficiency |
| Bai Zi Ren | Nourishes Heart, calms Shen | Heart Yin deficiency insomnia |
| Hong Zao (Red Dates) | Tonifies Spleen, nourishes Blood | Spleen deficiency, general Blood tonic |
| Gou Qi Zi (Goji) | Nourishes Liver-Kidney | Eye health, Liver-Kidney Yin deficiency |
Modern Research
- Antioxidant: Rich in polyphenols and vitamin C
- Anxiolytic: Animal studies show anti-anxiety effects
- Sleep-promoting: May improve sleep quality
- Cognitive: Some evidence of memory enhancement
- Iron-rich: Contains iron, supporting its traditional use for Blood deficiency
- Anti-fatigue: Reduces markers of physical and mental fatigue in studies
Quality and Selection
| Quality Indicator | Good Quality |
|---|---|
| Color | Golden-brown, translucent |
| Texture | Soft, pliable, not rock-hard |
| Aroma | Sweet, fragrant, fruity |
| Taste | Sweet, rich, no sourness |
| Size | Thick, fleshy pieces preferred |
Precautions
| Situation | Guidance |
|---|---|
| Excess heat / fire | May aggravate heat signs (sore throat, mouth ulcers) |
| Damp-heat | Sweet, warm nature worsens dampness |
| Phlegm conditions | May increase phlegm production |
| Diabetes | High natural sugar content — use sparingly |
| Pregnancy | Use in moderation — warm nature |
| Not for acute illness | Discontinue during active colds, flu, or fever |
Key Takeaways
- Long Yan Rou (Dried Longan) is a delicious Blood-nourishing tonic for Heart and Spleen
- Best for: insomnia, anxiety, palpitations, poor memory, and fatigue from Blood deficiency
- Key formula: Gui Pi Tang ( Restore the Spleen Decoction)
- Can be eaten daily as food — tea, porridge, soup, or direct snack
- Avoid with excess heat, damp-heat, or active acute illness
Disclaimer: This article is for educational purposes only. Consult a licensed TCM practitioner before using Long Yan Rou therapeutically.
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FAQ
What are the health benefits of dried longan in TCM?
In TCM, dried longan (Long Yan Rou) primarily nourishes Heart Blood and Spleen Qi, calms the Shen (spirit), and improves sleep. It is used for palpitations, anxiety, insomnia, poor memory, and fatigue related to Heart-Spleen deficiency. Unlike many tonic herbs that are bitter, Long Yan Rou is naturally sweet and pleasant to eat — it can be eaten as a snack, brewed in tea, or cooked in soups. It is especially popular for students studying for exams (improves memory) and for people with stress-related insomnia.
Can I eat dried longan every day?
Dried longan is generally safe for daily consumption in moderate amounts (5-15g or about 5-10 pieces per day). It is especially suitable for people with Heart-Spleen Blood deficiency — pale complexion, poor sleep, anxiety, fatigue. However, it is warm and sweet in nature, so it should be limited by people with excess heat, damp-heat, or phlegm conditions. Eating too much can cause internal heat (sore throat, mouth ulcers). Pregnant women should use it moderately. If you have diabetes, be aware that dried longan is high in natural sugars.
Disclaimer
This content is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before using any herbal preparation.