Releases the exterior and promotes eruption - Hu Sui is classically used when measles or similar rashes are slow to surface and mild warm dispersal is needed to bring the pathogen outward.
Promotes digestion and directs Qi downward - the fresh herb is used for poor appetite, food stagnation, nausea, and mild abdominal fullness, especially when aromatic movement is needed without heavy treatment.
Assists early wind-cold release - because it is warm and pungent, coriander is sometimes used in the very early stages of simple exterior cold with chills and poor appetite.
Secondary Actions
Hu Sui is both a culinary plant and a medicine, so fresh dosage and food-style administration are common in traditional practice.
Its dispersing action is relatively gentle, which is why it is favored for children or convalescent patients when one wants to vent and move without using stronger acrid medicinals.
Classical References
Traditional herb summaries describe Hu Sui as acrid and warm, entering the Lung and Spleen to promote sweating, vent rashes, and aid sluggish digestion.
Historical food-therapy sources treat coriander as a bridge between kitchen and clinic, especially for eruption disorders and mild cold-digestive overlap patterns.
The old caution against using it once eruptions are already complete remains important because a dispersing herb is unnecessary after the surface stage has already resolved.
Modern Research
Active Compounds
Linalool - the major volatile constituent associated with aromatic, antimicrobial, and calming effects
Other terpenes including gamma-terpinene and camphor-type volatiles - supportive fragrance-bearing compounds
Flavonoids and polyphenols - antioxidant and anti-inflammatory fractions
Essential oil fractions from leaves and seeds - the best studied modern coriander extracts
Studied Effects
A 2023 review summarized coriander essential oil chemistry and described broad antimicrobial, antioxidant, and anti-inflammatory activity, supporting why the plant remains interesting as both food and medicine (PMID 36677754).
A 2022 systematic review of preclinical studies found that Coriandrum sativum favorably modulates inflammatory mediators such as TNF-alpha, IL-1beta, and IL-6 across experimental models (PMID 35554788).
Coriandrum sativum essential oil showed antifungal activity against Candida species and altered fungal molecular targets, offering a modern rationale for some traditional external and antimicrobial uses (PMID 24901768).