Herb reference entry
Cassia Twig / Cinnamon Twig
Cassia Twig / Cinnamon Twig
Cinnamomum cassia (L.) J.Presl
Reviewed by Kuda, September 2, 2026 - Editorial policy
OVERVIEW
What This Record Covers
Cassia Twig, called Gui Zhi, is the young dried twig of Cinnamomum cassia, the same tree that produces mature cinnamon bark, and it is harvested from young branches rather than mature stems. The twigs are thin, branched, and aromatic, with a brown exterior and a lighter interior, and they are cut and dried for use. In trade it appears as cut twig pieces, slices, powders, and combined formulas, and the twig should be clearly distinguished from the thicker bark and from culinary cinnamon products. The plant part is the first distinction to make when comparing this material with cinnamon bark.
- English name
- Cassia Twig / Cinnamon Twig
- Latin name
- Cinnamomum cassia (L.) J.Presl
- Traditional category
- Exterior Releasing
- Nature
- Warm
- Flavor description
- Pungent, Sweet
- Record identifier
- guizhi
IDENTIFICATION
Identification and Image Notes
Cassia twig is thin, branched, and aromatic, while cassia bark is thicker and harvested from mature stems, and the plant part is the first distinction to make. The dried twigs are thin and rod-like, brown to gray-brown, with a sweet-spicy aroma and a warm taste, and they are usually sold as short cut pieces. The aromatic smell is shared with the bark, so the label must state whether the product is twig, bark, or oil.
Images are for orientation only, not definitive species authentication; confirm species, part, source, and labeling with a qualified professional or authoritative monograph.
TRADITIONAL CONTEXT
Traditional Use in Context
Traditional records discuss Cassia Twig for exterior release, warming circulation, chest and joint language, and harmonizing the surface and interior, and it is a central ingredient of the classical formula Gui Zhi Tang and its many variations, where it is paired with White Peony Root, Ginger, and Jujube. Classical texts describe it for exterior presentations with a tendency to sweat, and for warming constrained circulation, always within a pattern-based framework. The warming vocabulary is historical and does not establish the cause of fever or chest symptoms, and such symptoms should not be managed at home with warming herbs.
PROCESSING CONTEXT
Raw Material, Processing, and Product Form
Twigs are cut and dried, and the product may be raw or incorporated into a formula. Bark, essential oil, and culinary cinnamon products are different forms with different exposure, and each should be recorded separately.
The same name can cover a raw material, decoction piece, powder, extract, or finished product, so record the labeled form rather than assuming it; see the safety review for the questions to ask.
SAFETY REVIEW
Safety Boundaries
Review allergy, liver disease, pregnancy, bleeding, and concentrated cinnamon products, and check the coumarin content and concentration of any extract. Warming or sweating language should not be used to manage fever or chest symptoms at home, and persistent symptoms need medical assessment.
This record is not a dose recommendation; risk depends on identity, preparation, amount, duration, contamination, other medicines, and health conditions — a traditional or “natural” label cannot establish safety. For the full framework, read the Chinese Herbal Medicine Safety Review.
COMPARISON
How This Entry Differs
Compare Cassia Twig with Cinnamon Bark for the twig-versus-bark difference in plant part and intensity, and with Ephedra Herb for the different boundaries of exterior-releasing records. Cassia Twig is the milder, branch-derived member of the cinnamon pair.
Use the related-entry links below to compare identity, part, processing, and safety boundaries — similar categories do not make materials interchangeable.
STUDY METHOD
New to these entries?
Read the four-step method in How to Read a Herb Entry before comparing materials.
