Use of Yi Tang (maltose) in TCM
Please note that you should never self-prescribe TCM ingredients. A TCM ingredient is almost never eaten on its own but as part of a formula containing several ingredients that act together. Please consult a professional TCM practitioner, they will be best able to guide you.
Preparation: Maltose is a special form of sugar commonly made from malted barley.
Dosage: 30 to 60 grams
Main actions according to TCM*: Fortifies Qi and tonifies the Spleen. Soothes and tonifies the Middle Warmer. Lubricates the Lungs.
Primary conditions or symptoms for which Yi Tang may be prescribed by TCM doctors*: Fatigue Loss of appetite Abdominal pain Dry cough Wheezing
Contraindications*: Not to be used for symptoms of Dampness and Heat.
Common TCM formulas in which Yi Tang is used*
Xiao Jian Zhong Tang
Source date: 220 AD
Number of ingredients: 6 herbs
Formula key actions: Warms and tonifies the Middle Burner (Spleen and Stomach). Tonifies Qi. Relieves spasmodic pain.
Conditions targeted*: Chronic gastritisPeptic ulcers and others
Yi Tang is a king ingredient in Xiao Jian Zhong Tang. Like the name indicates, it means it has more power than other ingredients in the formula.
In Xiao Jian Zhong Tang, Yi Tang Tonifies both the Qi and Blood, generates Fluids, alleviates thirst, and moderates abdominal pain.
Records of Thoughtful Differentiation of Materia Medica describes Maltose as the "quintessence of a quintessence" because it is distilled from grains such as rice, wheat, or barley, all of which are associated with sweetness and earth. Containing the very essence of earth makes it ideally suited to tonifying the Middle Burner.
Huang Qi Jian Zhong Tang
Source date: 220 AD
Number of ingredients: 7 herbs
Formula key actions: Warms and tonifies the Middle Burner (Spleen and Stomach). Tonifies Qi. Relieves spasmodic pain.
Conditions targeted*: Gastric ulcerGastralgia and others
Yi Tang is a king ingredient in Huang Qi Jian Zhong Tang. Like the name indicates, it means it has more power than other ingredients in the formula.
In Huang Qi Jian Zhong Tang, Yi Tang Tonifies both the Qi and Blood, generates Fluids, alleviates thirst, and moderates abdominal pain.
Records of Thoughtful Differentiation of Materia Medica describes Maltose as the "quintessence of a quintessence" because it is distilled from grains such as rice, wheat, or barley, all of which are associated with sweetness and earth. Containing the very essence of earth makes it ideally suited to tonifying the Middle Burner.
Da Jian Zhong Tang
Source date: 220 AD
Number of ingredients: 4 herbs
Formula key actions: Warms and tonifies Middle Burner Deficiency. Directs rebellious Qi downward. Relieves pain.
Conditions targeted*: Chronic gastritisGastric ulcer and others
Yi Tang is an assistant ingredient in Da Jian Zhong Tang. This means that it either serves to reinforces the effect of other ingredients or it moderates their toxicity.
In Da Jian Zhong Tang, Yi Tang tonifies and strengthens the Middle Burner Qi so as to relieve the abdominal pain. It also counterbalances any excessive acrid and drying actions of the key herb so as to limit the Qi injuring.
Key TCM concepts behind Yi Tang's properties
In Traditional Chinese Medicine (TCM), Yi Tang belongs to the 'Tonic herbs for Qi Deficiency' category. Tonic herbs are used for patterns of Deficiency, when one lacks one of the 'Four Treasures' (Qi, Blood, Yin and Yang). Qi tonics are typically sweet and they tend to enter the Spleen and Lungs because these Organs are most involved with the production of Qi.
Furthermore Yi Tang is Warm in nature. This means that Yi Tang tends to help people who have too much 'Cold' in their body, although with less effect than a plant that would be Hot in nature. Balance between Yin and Yang is a key health concept in TCM. Those who have too much Cold in their body are said to either have a Yin Excess (because Yin is Cold in nature) or a Yang Deficiency (Yang is Hot in Nature). Depending on your condition Yi Tang can help restore a harmonious balance between Yin and Yang.
Yi Tang also tastes Sweet. The so-called 'Five Phases' theory in Chinese Medicine states that the taste of TCM ingredients is a key determinant of their action in the body. Sweet ingredients like Yi Tang tends to slow down acute reactions and detoxify the body. They also have a tonic effect because they replenish Qi and Blood.
The tastes of ingredients in TCM also determine what Organs and Meridians they target. As such Yi Tang is thought to target the Spleen, the Stomach and the Lung. In TCM the Spleen assists with digestion, Blood coagulation and Fluids metabolism in the body. The Stomach on the other hand is responsible for receiving and ripening ingested food and fluids. It is also tasked with descending the digested elements downwards to the Small Intestine. In addition to performing respiration, the Lungs are thought in TCM to be a key part of the production chain for Qi and the Body Fluids that nourish the body.
Use of Yi Tang as food
Yi Tang is also eaten as food.