Dr. David Orman

Ramulus Cinnamomi, known in Traditional Chinese Medicine (TCM) as Gui Zhi, is the tender twig of the cinnamon tree. While many are familiar with cinnamon bark for its culinary uses, the twig itself holds a special place in classical herbal formulas. Harvested when the branches are young and pliable, Ramulus Cinnamomi is considered warm, sweet, and pungent in nature—making it a versatile remedy for a range of internal cold patterns and stagnation issues. In TCM, it is frequently used to release the exterior and promote the flow of Yang energy, especially in cases where the body struggles to circulate warmth.

One of Gui Zhi’s primary functions is to disperse cold and improve circulation. In clinical use, it is often included in formulas to relieve chills, mild fevers, and body aches associated with wind-cold invasion. It excels at guiding the body’s natural warmth outward, unblocking the superficial layers so that pathogenic influences can be vented through the skin. Gui Zhi is also known for its ability to harmonize the relationship between Ying (nutritive) and Wei (defensive) Qi—making it especially useful for conditions where this balance is disrupted, such as spontaneous sweating or alternating hot and cold sensations.

Beyond its effects on the immune and circulatory systems, Ramulus Cinnamomi also warms the channels and is used to treat joint and menstrual pain caused by cold obstruction. In formulas targeting arthritic pain, cramps, or cold-related stiffness, Gui Zhi helps warm and open the meridians, restoring fluid movement and relieving discomfort. This function also makes it a favorite for treating cold-type dysmenorrhea, where warmth and improved flow are essential. Often combined with herbs like Bai Shao (White Peony) or Sheng Jiang (Fresh Ginger), Gui Zhi works gently yet powerfully to bring heat to cold, stagnant areas.

In terms of emotional and energetic use, Gui Zhi is often used by Taoist and classical practitioners to soften inner rigidity and promote emotional fluidity. As a plant that brings warmth and movement, it is seen as a metaphor for the gentle activation of blocked energy within the spirit. When used skillfully, Ramulus Cinnamomi not only treats physical cold, but also acts as a botanical ally to help the body and heart regain flow, warmth, and harmony. Whether used in decoction, powder, or classical formulation, Gui Zhi remains a cornerstone of elegant herbal medicine.