Silkworm Faeces

Source Can Sha is the dried defecation of the silkworm.

Producing Areas Mainly produced in Jiangsu and Zhejiang.

Properties Sweet, Spicy, Warm

Channels Liver, Spleen, Stomach


  • Dispels wind and dampness
    For muscular aches and pains associated with wind and dampness in the extremities.
  • Relieves itchy skin and eczema
  • Regulates the stomach and expels dampness
    Alleviates vomiting, diarrhoea, cramps, abdominal pain, borborygmus (gurgling noise in the intestines) and spasms in the calf due to dampness in the middle jiao.

Usage and Dosage
5–15 g is wrapped in cloth for decoction. Or it may be used externally

Keep in a ventilated and dry place. Protect from moisture so it will not disintegrate.

Description of Quality Herb
The good are dry, black in colour, compact, with even sizes and without impurities.

Professional Tips

Identifying Cansha and Mugua (Fructus Chaenomelis)

Differences: Mugua can regulate the middle energiser, expel dampness, soothe the liver and relax tendons. It is often indicated for Bi syndrome of wind-dampness type, muscular spasm, pain caused by beriberi, blood deficiency and hyperactive liver-fire. Cansha can expel wind and dampness, with gentle actions. It is often used for treating rubella, eczema and itch.