Medicated Leaven
神曲 · Shén Qū
Breaks down stuck food and settles a heavy stomach
Properties
WarmingWarming botanicalPungent, Sweet
Concerns
What it does
Medicated leaven works on the bloated, weighed-down feeling that follows a heavy meal. In TCM, it transforms food stagnation, the term for food that just sits in the stomach instead of moving along. It's a fermented blend, traditionally made from wheat flour, bran, and several herbs aged together. That fermentation is what makes it so good at restarting a sluggish gut.
How to take it
Decoct 6–15g of crushed medicated leaven in water for 20 minutes. Drink 1 cup after a heavy meal that won't settle. Almost always used in formula.
Look for it in Bao He Wan, the classical formula for food that won't move
Use 1–3g of ground medicated leaven stirred into warm water after a meal that feels stuck. Pairs well with crushed hawthorn for richer meals.
Stir a small spoonful into warm water after holiday feasts
Safety
- Generally safe for short-term digestive use
- Skip during pregnancy. It can be too moving for an early pregnancy
- Contains wheat. Avoid if you have celiac disease or gluten sensitivity
- Talk to your doctor before starting medicinal use, especially if you take medication
Where it comes from
Medicated leaven, or shén qū, dates back at least 1,500 years in Chinese pharmacy. It's a prepared botanical, not a single plant. Wheat flour and bran are mixed with herbs like apricot kernel, red bean, and wormwood, then aged into a fermented cake. The cake is broken into chunks and added to digestive formulas. Different regional recipes still exist, and the modern version used in Bao He Wan keeps the same idea: food stagnation, meet fermentation.