Fu Xiao Mai - Light wheat
Fu Xiao Mai - light, floating wheat - consists of unripe or light wheat grains that float on water. It is precisely these seemingly inferior grains that have a special healing effect: they stabilize the surface and stop excessive sweating.
In TCM, Fu Xiao Mai is regarded as the Most important herb against night sweats and spontaneous sweating. In the classic formulation Gan Mai Da Zao Tang - with Gan Cao and Da Zao - it is used for emotional instability and the so-called Zangzao syndrome.
Effect from a Western perspective
Starch, proteins and B vitamins - the main ingredients - have been shown in studies to have a regulating effect on the autonomic nervous system and sweat secretion. The amino acid tryptophan could explain the mood-stabilizing effect.
- Proven regulating effect on sweat secretion via the autonomic nervous system
- Tryptophan - a serotonin precursor - could mediate the mood-stabilizing and calming effect
- Clinical studies on Gan Mai Da Zao Tang show efficacy for menopausal symptoms and emotional instability
- B vitamins (B1, B6) support nerve function and energy metabolism
- Mild anxiolytic effects observed in animal models
Effect from a TCM perspective
Fu Xiao Mai stabilizes the surface and inhibits sweating. It nourishes the heart qi and calms the mind - which is why it is used for palpitations, restlessness and emotional instability.
- Stabilizes the surface and stops night sweats in case of yin deficiency
- Inhibits spontaneous sweating in cases of Qi deficiency and Wei-Qi weakness
- Nourishes the heart qi and calms the mind in case of palpitations and restlessness
- Treats Zangzao syndrome with uncontrolled crying and hysteria (Gan Mai Da Zao Tang)
- Relieves menopausal symptoms with hot flushes and night sweats
Application & dosage
Fu Xiao Mai is used in relatively high doses as a decoction - the standard dose is 15-30 g. In Gan Mai Da Zao Tang, the dose can even be increased to up to 60 g. The mild, food-like nature allows these high doses.
As a tea or in congee (rice porridge), Fu Xiao Mai can also be used as a food therapy for mild complaints. Regular intake over several weeks is recommended for chronic night sweats.
Dosage forms
- Decoction (cook for 20-30 minutes) - standard preparation, longer cooking time required
- Tea - infuse wheat grains with hot water
- Kongee - Fu Xiao Mai cooked in rice porridge as a food therapy
- Gan Mai Da Zao Tang - classic ready-made recipe available as granules
Dosage
- Decoction: 15-30 g (standard)
- In Gan Mai Da Zao Tang: up to 60 g
- As tea or congee: 10-20 g
Frequent combination partners
Fu Xiao Mai often only develops its full effect in combination with other herbs
Combinations & formulas
- Huang Qi and Ma Huang Gen form the formula Mu Li San with Fu Xiao Mai - against spontaneous sweating due to Qi deficiency
- Gan Cao and Da Zao training with Fu Xiao Mai Gan Mai Da Zao Tang - against emotional instability, uncontrolled crying and Zangzao syndrome
- Mu Li and Wu Wei Zi strengthen the antiperspirant effect in the case of persistent night sweats due to yin deficiency
- Suan Zao Ren calms the mind in cases of insomnia with night sweats - a common combination in menopause treatment
History & Tradition
Fu Xiao Mai appears for the first time in the Běn Cǎo Huì Yán as an independent remedy, although wheat products were already used medicinally in earlier texts. The name „floating wheat" (浮小麦) describes the selection process: Wheat grains are placed in water and only the floating (light, unripe) grains are used as medicine.
The most famous recipe with Fu Xiao Mai - Gan Mai Da Zao Tang - comes from Zhang Zhongjing from the Jīn Guì Yào Lüè (approx. 200 AD). This elegant triple formula of wheat, licorice and jujube is used in the so-called Zangzao syndrome a state of emotional instability with uncontrolled crying, mood swings and hysteria.
It is worth noting that Zhang Zhongjing's original recipe Xiao Mai (normal wheat) - the later tradition prefers Fu Xiao Mai (the light wheat) because of its stronger antiperspirant effect. This differentiation shows how TCM pharmacology has been refined over the centuries.
In modern clinical practice, Gan Mai Da Zao Tang is successfully used for Menopausal symptoms, anxiety disorders and emotional instability - an astonishing topicality for an 1800-year-old formula.
Contraindications & caution
Fu Xiao Mai has a very mild effect profile and is considered largely harmless. It is one of the safest herbs in TCM.
Caution with gluten intolerance (coeliac disease) or wheat allergy - wheat grains contain gluten. Not as the sole remedy for severe Yin deficiency - in this case the Yin must be nourished directly (e.g. with Shu Di Huang or Mai Dong).
Botany
Triticum aestivum L. is an annual grass plant from the sweet grass family (Poaceae) and the world's most important cereal. The plant grows to a height of 60-120 cm and forms upright stalks with linear leaves. The spikes bear 3-5 flowers per spikelet.
Only the light, unripe grains are selected for medicinal use - the so-called „floating method": Wheat grains are placed in water and only the floating grains (with lower starch density) are dried and used as Fu Xiao Mai. These grains contain relatively more protein and amino acids than the heavier, starch-rich grains.
Occurrence
- Cultivated worldwide - one of the most important crops of mankind
- Main growing areas in China: Héběi, Hénán, Shāndōng and Ānhuī
- Prefers temperate climate with sufficient precipitation
- Winter and spring wheat varieties available
- Fu Xiao Mai is obtained as a by-product of the normal wheat harvest
Harvest time
- Harvest in early summer (June to July) - together with the normal wheat harvest
- After threshing, the grains are placed in water - floating grains are skimmed off
- The floating (light) grains are dried and used as Fu Xiao Mai
- Winter wheat is harvested in June, spring wheat in July
Processing
The processing of Fu Xiao Mai is very simple - choosing the right grains is the crucial step.
- Floating method
- Place the threshed wheat grains in a basin of water
- Skim off floating (light) grains with a sieve
- Dry in the sun or at a low temperature
- Store in a dry and airy place - protect from moisture and pests
- Quality features
Good produce consists of evenly dried, light grains with intact shells. The grains should float when immersed in water again.
Related herbs
Herbs with similar effects and related areas of application
Comparable western herbs
- Sage (Salvia officinalis) - The European remedy for excessive sweating. In phytotherapy, sage tea is used specifically for night sweats and menopausal symptoms - a direct parallel to Fu Xiao Mai. Clinical studies confirm the antiperspirant effect.
- Oats (Avena sativa) - Closely related grain with a calming effect on the nervous system. Oat straw extract (Avena tincture) is used in European phytotherapy for nervous exhaustion and sleep disorders - comparable to Fu Xiao Mai's heart-nourishing effect.
- St. John's wort (Hypericum perforatum) - European medicinal herb for mood swings and mild depression. Like Fu Xiao Mai in Gan Mai Da Zao Tang, it is used for emotional instability - albeit via a different mechanism of action (serotonin reuptake inhibition).