What is Bai Guo? Are Yin Xing Ye and the ginkgo tree the same medicine?
Official Bai Guo (白果) is the dried ripe seed of Ginkgo biloba. The pharmacopoeial name is Ginkgo Semen. Yin Xing Ye is the leaf: sweet-bitter-astringent and neutral, invigorates Blood, dispels stasis, frees the collaterals, stops pain, astringes the Lung and calms panting—a different direction. Write Bai Guo or Chao Bai Guo. Eating it raw is toxic.
What are the TCM properties and traditional uses of Bai Guo?
According to the Chinese Pharmacopoeia, Bai Guo is sweet, bitter, astringent and neutral, and toxic, enters the Lung and Kidney channels, and acts to astringe the Lung, stabilize panting, stop vaginal discharge and reduce urine. It is used for panting cough with copious phlegm, white turbid vaginal discharge, and enuresis with frequent urine. Sweet-bitter-astringent and constraining, it suits unsecured Lung and Kidney—not the start of an exterior pattern, sticky phlegm that will not move, or a remaining excess pathogen.
How do you choose raw versus dry-fried Bai Guo? Can Yin Xing Ye replace it?
Eating it raw is toxic; medicinal use must be cooked or dry-fried. Dry-fried seed reduces toxicity; astringing the Lung remains. Ginkgo leaf leans to invigorating Blood and freeing the collaterals; it cannot replace stopping discharge and reducing urine by equal weight. Commercial ginkgo-seed tea is not equal-weight pieces.
What is the usual dosage? Can it be drunk daily as a panting tea?
The pharmacopoeial decoction dose is 5–10 g. It is not a four-season “ginkgo panting tea.” Overdose in children can poison. Panting cough needs a practitioner to name a short course; it does not replace respiratory assessment.
What are the contraindications? Can it be used in pregnancy?
Eating it raw is toxic. Unsuitable at the start of an exterior pattern, with a remaining excess pathogen, and when phlegm is sticky and will not move. Pregnancy and children need a practitioner’s assessment; do not eat raw seed on your own. Vomiting, convulsions and difficulty breathing are an emergency.
Can Bai Guo astringe the Lung, stabilize panting, stop vaginal discharge and reduce urine?
It can help panting cough with copious phlegm and white turbid discharge. Exterior wind-cold with internal phlegm-heat joins ephedra, scutellaria and mulberry root bark in Ding Chuan Tang. It astringes the Lung, stabilizes panting, stops vaginal discharge and reduces urine—not a specific for every asthma or every discharge.
Can Bai Guo be drunk daily as a panting, discharge or urine tea?
Unsecured Lung and Kidney may enter a short formula; a remaining exterior pathogen only closes further as it astringes. “Ginkgo seed must stabilize panting” does not replace respiratory assessment. Astringing the Lung, stabilizing panting, stopping discharge and reducing urine should name 5–10 g, dry-fried.
How do you choose among Bai Guo, Yin Xing Ye, Wu Wei Zi, Sang Bai Pi and Qian Shi?
Ginkgo seed is sweet-bitter-astringent, neutral and toxic: astringes the Lung, stabilizes panting, stops discharge and reduces urine—panting with copious phlegm and enuresis. Ginkgo leaf is sweet-bitter-astringent and neutral: invigorates Blood, dispels stasis, frees the collaterals, stops pain, astringes the Lung and calms panting—chest bi with collateral obstruction. Schisandra is sour-sweet and warm: constrains and secures, boosts qi, generates fluid, supplements the Kidney and calms the Heart—Lung-Kidney vacuity. Mulberry root bark is sweet-cold: drains the Lung, calms panting, promotes urination and reduces swelling—Lung-heat panting. Euryale is sweet-astringent and neutral: boosts the Kidney, secures essence, supplements the Spleen, stops diarrhea, eliminates dampness and stops discharge—unsecured Spleen and Kidney. Phlegm-heat panting favors dry-fried Bai Guo (Ding Chuan Tang); chest bi favors Yin Xing Ye; chronic vacuity panting favors Wu Wei Zi; Lung heat favors Sang Bai Pi; discharge and seminal emission favor Qian Shi. They may be paired after pattern differentiation; excess pathogens forbid large Bai Guo and Wu Wei Zi, and do not eat the seed raw.
Which herbs is Bai Guo combined with? What are the representative formulas?
Panting cough joins ephedra, scutellaria, mulberry root bark and coltsfoot in Ding Chuan Tang. Vaginal discharge may join euryale and Chinese yam after pattern differentiation. Write dry-fried Bai Guo 5–10 g; do not replace it with ginkgo leaf by equal weight, and do not eat it raw.
How do you choose and store Bai Guo?
Choose ellipsoid seeds, a yellow-white shell, a pale-green or pale-yellow kernel, a starchy cut face, a faint odor and a sweet, slightly bitter taste. Moldy, moth-eaten, rancid or discolored lots are discarded. Store ventilated and dry. Buy pharmacopoeial Bai Guo; do not replace astringing the Lung, stabilizing panting, stopping discharge and reducing urine with ginkgo leaf by equal weight, and do not eat it raw.
