What is Keishi-bukuryo-gan?

Keishi-bukuryo-gan (KBG) is one of the most widely prescribed Kampo formulas in Japan, derived from the classical Chinese text 'Jin Gui Yao Lue' (Essentials of the Golden Cabinet) written around the 3rd century CE. It combines five botanicals that each contribute to its overall effect on circulation, inflammation, and hormonal balance. In modern Japan, it is available as a standardized over-the-counter and prescription-grade extract used by gynecologists and Kampo practitioners alike.

How does Keishi-bukuryo-gan work?

The formula is thought to improve blood flow to the pelvic region, reduce stagnation (a concept in both Chinese and Japanese medicine referring to sluggish circulation and fluid buildup), and gently modulate inflammation. Modern research suggests its herbs work together to lower prostaglandins that drive menstrual cramps, reduce oxidative stress, and influence estrogen metabolism — which may explain its effect on fibroids and menopausal symptoms. No single ingredient drives the effect; the combination is key.

What forms does Keishi-bukuryo-gan come in?

In Japan, KBG is most commonly taken as standardized granules (dissolved in warm water) or tablets, with brand names like Tsumura TJ-25 being widely prescribed. Traditional decoctions (boiling the raw herbs) are still used by classical Kampo practitioners. Granule extracts are the most practical and well-studied form. Tablets offer convenience but may vary in standardization outside Japan.

Where it comes from:

This formula has been in continuous clinical use for over 1,700 years, first codified in Zhang Zhongjing's 'Jin Gui Yao Lue.' It was adopted into Japanese Kampo medicine and remains one of the top 10 most prescribed Kampo formulas in Japan today, used routinely in obstetrics and gynecology departments at major Japanese hospitals.

What does Keishi-bukuryo-gan help with?

• Menstrual pain and cramps (dysmenorrhea): KBG helps ease period pain by reducing the inflammatory signals (prostaglandins) that cause the uterus to cramp. Women taking it regularly often report that cramps become significantly milder within a few cycles — without the side effects of NSAIDs.
• Uterine fibroids: Several clinical studies in Japan have shown that KBG can reduce fibroid size and relieve associated symptoms like heavy bleeding and pelvic pressure. It appears to work by improving blood flow and reducing the estrogen-driven environment that fibroids thrive in.
• Menopausal hot flashes: KBG is one of the most studied Kampo formulas for menopause, particularly for hot flashes and night sweats. It is commonly used in Japan as an alternative to hormone therapy, especially for women who cannot or prefer not to take estrogen.
• Endometriosis: The formula's combination of anti-inflammatory and circulation-improving herbs makes it a popular supportive treatment for endometriosis. It may help reduce pelvic pain and inflammation without the hormonal side effects of conventional therapies.
• Irregular periods: By supporting healthy pelvic circulation and reducing stagnation, KBG can help encourage more regular menstrual cycles, particularly in women whose irregularity is associated with blood flow issues or hormonal imbalance.
• Premenstrual syndrome (PMS): Women with PMS-related symptoms like bloating, irritability, breast tenderness, and pelvic heaviness often find KBG helpful, as it addresses both the physical congestion and low-grade inflammation that drive many premenstrual complaints.
• Pelvic pain and blood stagnation: In Kampo medicine, many pelvic conditions — from chronic pain to heavy periods — are linked to poor blood circulation in the lower abdomen. KBG is specifically formulated to address this, improving flow and reducing the tissue congestion that causes discomfort.
• Ovarian cysts (polycystic ovary concerns): While not a first-line treatment, KBG has been used adjunctively in cases of ovarian cysts and PCOS-related concerns, particularly when symptoms include pelvic heaviness, irregular cycles, and poor circulation.

What can Keishi-bukuryo-gan help prevent?

• Recurrence of uterine fibroid growth after conservative treatment
• Worsening of menopausal vasomotor symptoms (hot flashes, night sweats) over time with consistent use

Which foods are rich in Keishi-bukuryo-gan?

Keishi-bukuryo-gan is a multi-herb formula and is not found in food. However, you can support the same goals — better pelvic circulation, hormone balance, and reduced inflammation — through diet. Focus on: anti-inflammatory foods like fatty fish (salmon, sardines), flaxseeds, and walnuts for their omega-3 content; dark leafy greens and beets to support blood flow; fermented foods like miso and kimchi to support gut-hormone balance; and limiting refined sugar, processed foods, and alcohol, which worsen inflammation and estrogen imbalance. Warming spices like ginger, turmeric, and yes — cinnamon (one of the formula's key herbs) — also complement this formula's approach.

What are the side effects of Keishi-bukuryo-gan?

• Mild nausea or stomach discomfort (most common, usually resolves with food)
• Loose stools or diarrhea (especially at higher doses)
• Skin rash or itching (rare allergic reaction)
• Increased menstrual flow in the first cycle of use (usually normalizes)
• Not recommended during pregnancy without medical supervision due to blood-moving herbs

Good to know:

Keishi-bukuryo-gan has a strong safety record in Japan where it has been used clinically for decades. Most people tolerate it very well. Mild and temporary digestive symptoms are the most commonly reported issue.

How much Keishi-bukuryo-gan should you take?

• Recommended daily: Standard clinical dose is 2.5 g of standardized granule extract three times daily (7.5 g/day total), as used in most Japanese clinical studies. Tablet equivalents vary by brand — follow product labeling. Traditional decoctions typically use 10–15 g of the raw herb combination per day.
• Best time of day: Traditionally taken 30 minutes before meals (three times daily) to enhance absorption. Granules dissolved in warm water are preferred for this reason.
• With or without food: Best taken before meals on an empty or light stomach. If digestive sensitivity occurs, taking with food is acceptable.
• Time to effect: Menstrual pain: often improves within 1–3 cycles. Fibroid size reduction: typically 3–6 months of consistent use. Hot flash relief: 4–8 weeks.
• How long to take it: For fibroid management or menopausal support, consistent use for 3–6 months is typically evaluated before assessing results. Long-term use (12+ months) has been studied in Japan without major safety concerns, but periodic review with a practitioner is recommended.