Gypsum Powder

Gypsum (shi gao, 石膏), also known as Gypsum Fibrosum, is a natural mineral composed of Calcium Sulfate. Most commonly known for its use in making products such as drywall, plaster and other industrial materials, Gypsum is actually also a vital component of Traditional Chinese Medicine (TCM). 

The most common type of Gypsum is fibrous Gypsum, which is translucent and has a silky, satiny appearance. It is typically found in old ocean beds and sedimentary rocks such as limestone. Gypsum is formed by cyclical evaporation and rehydration of soils rich in calcium and sulfates.

In addition to its healing properties, Gypsum is used for jewellery and as an ornamental stone. The ancient Egyptians also used Gypsum to plaster their walls, carve statues, as an adhesive, and as a filler in pigments.

In TCM, Gypsum falls under the category of ‘Herbs that clear Heat and purge Fire or clear Summer Heat’. Such herbs are used to clear inflammatory and infectious conditions, referred to as ‘Internal Heat’ in TCM. Cold in nature, Gypsum can help people who have too much ‘Heat’ in their body, such as those with Yang Excess or Yin Deficiency, to restore a healthy yin-yang balance.

Pungent and sweet, Gypsum promotes the circulation of qi and body fluids. Also, Gypsum can slow down acute reactions, detoxify the body and has a tonic effect on the body by replenishing qi and blood. In particular, Gypsum targets the Lungs and the stomach.

Traditional Chinese Medicine (TCM) shows that Gypsum include the following health benefits:

Gypsum can clear Excess Heat and drain Fire, in particular Heat in the Lungs and the stomach. This means that it can address symptoms such as high fever with no chills, excessive thirst, sweating, irritability, and red tongue with yellow coat. 

When it comes to symptoms associated with the Lungs, Gypsum can tackle bad breath, cough, wheezing, fever and thick yellow sputum. When it comes to symptoms caused by Stomach Fire, Gypsum can tackle headache, toothache, painful and swollen gums.

Also, Gypsum can relieve thirst and restlessness. In addition, Gypsum can be taken internally or applied topically to relieve burns, abscesses and eczema and ulcerated sores.

Modern studies have also suggested that Gypsum can help with healthy bone growth due to its calcium contents. Individuals who have or are at risk of developing osteoporosis can use Gypsum to supplement their calcium intake.

The recommended dosage of Gypsum is 15 – 60g per day, if ground into a powder and used in a decoction. Some healthcare providers may recommend a slightly lower dose of 9 – 30g. It is best to consult your healthcare provider on the exact dosage suitable for you. If Gypsum is used externally. It should be heated (calcined) and pulverized first before usage. 

Whole blocks or strands of Gypsum can be found at some herbal stores. Gypsum powder, on the other hand, is more readily available in many Asian specialty markets and herbal shops.

Gypsum can also be found in foods such as white bread, blue cheese, ice cream, flour, canned vegetables, pasta, dairy products, processed fruit, candies, breakfast cereals, soy products, baked goods, processed meats or fish, condiments, soups, alcoholic beverages, prepared foods and water-based beverages.

Gypsum should not be used by individuals who have a weak stomach, weak pulse or Yang Deficiency. Also, Gypsum may interfere with drugs prescribed for diabetes. 

Other medications that Gypsum can interact with include antibiotics, anticonvulsants and diuretics. Taking these medications along with calcium could increase the risk for side effects from these medications and interfere with their effectiveness. 

Some side effects associated with Gypsum include bloating, gas and constipation.

In addition, do note that adults should not consume more than 2500 mg of calcium per day. This may cause toxicity symptoms such as nausea, abdominal pain, constipation, vomiting, loss of appetite, fatigue, high blood pressure, frequent urination, confusion and coma. Getting too much calcium could also interfere with zinc and iron absorption, increasing your risk for deficiencies of these nutrients.

We strongly advise you to consult your healthcare provider first before adding Gypsum to your diet!

Here is a summary for Gypsum:

• Herb name (Chinese): 石膏
• Herb name (Pin Yin): shí gāo
• Herb name (English): Gypsum
• Herb name (Botanical): Gypsum Fibrosum
• Origin of species: Hydrated calcium sulphate (CaSO4•2H2O)
• Part(s) of herb used: Mineral
• Geo-specific habitat(s): Hubei, Gansu, Sichuan, Anhui
• Taste(s) & Properties: Sweet, pungent; Extremely Cold; Administrates the Lung and Stomach Meridians
• Actions: Eases feverish symptoms, and coughs with blood-stained or yellow oral discharge; Relieves swollen gums and symptoms related to constant thirst; Aids in recovery of sores, and stops bleeding (external use)

Ikarashi, N., Ogiue, N., Toyoda, E., Nakamura, M., Kon, R., Kusunoki, Y., … & Sugiyama, K. (2013). Elucidating the mechanism by which gypsum fibrosum, a traditional Chinese medicine, maintains cutaneous water content. Biological and Pharmaceutical Bulletin, b13-00494. [Accessed on 29th October 2022]

Mei, F., Xing, X. F., Tang, Q. F., Chen, F. L., Guo, Y., Song, S., … & Luo, J. B. (2016). Antipyretic and anti-asthmatic activities of traditional Chinese herb-pairs, Ephedra and Gypsum. Chinese journal of integrative medicine, 22(6), 445-450.[Accessed on 29th October 2022]

Yuan, D., Sunouchi, H., Sakurai, T., Saito, K. I., & Kano, Y. (2002). Pharmacological properties of traditional medicines (XXVII). Interaction between Ephedra Herb and Gypsum under hyperthermal conditions in rats. Biological and Pharmaceutical Bulletin, 25(7), 872-874.[Accessed on 29th October 2022]