Rice Paper Pith
Rice Paper Pith (Tong Cao): A Cooling, Bland-Sweet Herb for Promoting Lactation, Clearing Heat, and Facilitating Fluid Flow
Introduction
Rice Paper Pith, known as Tong Cao (通草) in Traditional Chinese Medicine (TCM), is the dried pith of the Tetrapanax papyrifer plant. Cooling and mildly sweet in nature, it is traditionally used to clear Heat, promote urination, and facilitate the smooth flow of fluids, especially in conditions involving Heat-induced stagnation.
What Is Rice Paper Pith (Tong Cao)?
Tong Cao is derived from the soft inner pith of the Tetrapanax stem. In TCM, it primarily enters the Lung and Stomach meridians. Its actions focus on promoting urination without damaging Yin, clearing Heat, and opening pathways for fluid movement, including breast milk production.
Health Benefits of Rice Paper Pith (Tong Cao)
Promotes Lactation
Traditionally used to encourage breast milk production when insufficient lactation is due to Heat or fluid stagnation.
Clears Heat and Relieves Irritability
Helps clear internal Heat that may contribute to restlessness, mild fever, or inflammatory symptoms.
Facilitates Urination and Reduces Swelling
Used for urinary difficulty, scanty urine, or edema caused by Heat obstructing fluid pathways.
Supports Postpartum Recovery
Often included in postpartum formulas to support fluid regulation and gentle detoxification.
Light and Gentle Diuretic Action
Promotes fluid movement without being harsh or draining, making it suitable for delicate constitutions.
How to Use Rice Paper Pith (Tong Cao)
As a Herbal Decoction
Added toward the end of cooking due to its light structure; simmer briefly and drink warm.
In Combination Formulas
Commonly paired with herbs such as Akebia stem, Plantago seed, or mulberry leaf to enhance Heat-clearing and fluid-regulating effects.
Short-Term Use
Best used for acute or temporary conditions rather than long-term supplementation.
Where to Buy Rice Paper Pith (Tong Cao)
You can find Rice Paper Pith at:
- Traditional Chinese medicine shops
- Specialty herbal suppliers
- Online TCM retailers
Look for:
Light, spongy white pith pieces
Minimal odor and clean appearance
Proper identification as Tetrapanax papyrifer
Are There Any Side Effects?
Rice Paper Pith is considered very gentle and safe when used appropriately. Because of its cooling and fluid-moving properties, excessive use may not be suitable for individuals with cold or deficient conditions.
Conclusion
Rice Paper Pith (Tong Cao) is a mild, cooling TCM herb valued for promoting lactation, clearing Heat, and supporting healthy fluid circulation, particularly in postpartum and Heat-related conditions.
FAQs
Is Rice Paper Pith the same as edible rice paper?
No. Rice Paper Pith comes from plant pith and is not the same as culinary rice paper made from rice flour.
Can Rice Paper Pith be used daily?
It is typically used short term for specific conditions rather than as a daily tonic.
Is Rice Paper Pith warming or stimulating?
No. It is cooling and non-stimulating, making it suitable for Heat-related conditions.

