Cordyceps
冬虫夏草 · Dōng Chóng Xià Cǎo
Rebuilds deep energy in your lungs and kidneys
What it does
Cordyceps is for deep, bone-level fatigue, the kind where your reserves feel completely drained. In TCM, it rebuilds your kidney and lung energy, the two systems controlling your deepest vitality. Practitioners use it during recovery from illness or when endurance runs low. It gained global fame when Chinese athletes credited it during their record-breaking 1993 season.
How to take it
Take a standardized cordyceps extract in capsule form, typically 1,000–3,000mg daily. Best taken in the morning for sustained energy throughout the day.
Start with a cultivated Cs-4 cordyceps capsule. It's affordable and well-studied
Safety
- Generally well tolerated, but skip during acute infections or fevers
- Wild cordyceps is extremely expensive. Cultivated forms are more accessible and tested
- May interact with immunosuppressant drugs
- Talk to your doctor before starting, especially if you take medication
Where it comes from
Cordyceps has one of the most unusual origin stories in all of medicine. It's a fungus that grows on caterpillar larvae high in the Tibetan Plateau, above 3,500 meters. Yak herders first noticed their animals became more vigorous after grazing in fields where cordyceps grew. It's been used in TCM since at least the 18th century and became globally famous after Chinese runners broke multiple world records in 1993, partly crediting cordyceps in their training regimen.