Hyacinth Bean Leaf

Hyacinth Bean Leaf (Bai Bian Dou Ye): A Neutral, Sweet Herb for Clearing Summer Heat, Resolving Dampness, and Supporting Digestion

Introduction

Hyacinth Bean Leaf, known as Bai Bian Dou Ye (白扁豆叶) in Traditional Chinese Medicine (TCM), is traditionally used to clear Summer Heat, resolve Dampness, and support digestion. Neutral to slightly cool in temperature and sweet in nature, it is valued for addressing summer-related digestive discomfort, fatigue, and Damp-Heat conditions.

What Is Hyacinth Bean Leaf (Bai Bian Dou Ye)?

Hyacinth Bean Leaf is the leaf of Lablab purpureus. In TCM, it is considered a gentle, aromatic herb with an affinity for the Spleen and Stomach channels. It is lighter and milder than the seed (Bai Bian Dou) and is especially used for seasonal conditions related to heat and dampness.

Health Benefits of Hyacinth Bean Leaf (Bai Bian Dou Ye)

Clears Summer Heat
Traditionally used for Summer Heat patterns such as fatigue, low appetite, nausea, and a heavy or foggy sensation during hot, humid weather.

Resolves Dampness
Helps address Dampness affecting the middle burner, including loose stools, abdominal fullness, and a greasy tongue coating.

Supports Digestion
Gently strengthens digestive function and is often used when poor appetite or digestive weakness is aggravated by heat or humidity.

How to Use Hyacinth Bean Leaf (Bai Bian Dou Ye)

As a Food Therapy
Often prepared as a light tea or soup during summer months to help cool the body and support digestion.

In Herbal Decoctions
Used in mild decoctions combined with other Summer Heat–clearing or Damp-resolving herbs.

In Traditional Preparations
Commonly included in seasonal formulas or home remedies aimed at preventing summer digestive disorders.

Where to Buy Hyacinth Bean Leaf (Bai Bian Dou Ye)

You can find Hyacinth Bean Leaf at:

• Traditional Chinese medicine shops
• Asian herbal markets
• Licensed online herbal retailers

Look for:

• Green to yellow-green dried leaves
• Clean, intact pieces
• Light herbal aroma
• No mold, dark spots, or musty smell

Are There Any Side Effects?

Hyacinth Bean Leaf is generally gentle and well tolerated. Excessive use may not be suitable for those with Cold-type digestive weakness or chronic diarrhea without Damp-Heat.

Conclusion

Hyacinth Bean Leaf (Bai Bian Dou Ye) is a mild, seasonal TCM herb used to clear Summer Heat, resolve Dampness, and gently support digestion.

FAQs

Is Hyacinth Bean Leaf toxic?
No, it is not toxic and has a long history of safe use when properly prepared.

Can Hyacinth Bean Leaf be used daily?
Yes, it is often used short-term during hot or humid weather or periodically as part of seasonal dietary support.

Is Hyacinth Bean Leaf warming or cooling?
It is neutral to slightly cool in nature, making it especially suitable for Summer Heat and Dampness conditions.