Bai Zi Ren Wan — Biota Seed Pill

On this page

1. Overview
2. TCM pattern
3. Key herbs
4. Formula actions
5. Conditions treated
6. Cautions

Overview

Bai Zi Ren Wan — the “Biota Seed Pill” — appears in the Song-dynasty Tai Ping Hui Min He Ji Ju Fang. It is a gentle Heart-nourishing formula centred on Bai Zi Ren (biota seed) for Heart-Blood and Heart-Yin deficiency with mild Shen disturbance: difficulty falling asleep, light sleep with vivid dreams, mild palpitations, mild anxiety. Bai Zi Ren is one of the most important seeds in TCM for “nourishing the Heart and calming the spirit”, paired here with Suan Zao Ren (sour jujube seed) and other Blood-nourishing herbs.

I prescribe Bai Zi Ren Wan as part of bespoke herbal formulas from pharmaceutical-grade granules sourced from Sun Ten in Taiwan.

TCM pattern

Bai Zi Ren Wan is prescribed for Heart-Blood / Heart-Yin deficiency with mild Shen disturbance:

• Difficulty falling asleep, sleep-onset insomnia
• Light sleep with vivid dreams
• Mild palpitations, particularly at night
• Mild anxiety with mental restlessness
• Pale complexion, mild dizziness
• Dry stools, mild constipation (biota seed has lubricating action)
• Tongue — pale, thin coat
• Pulse — thin, possibly slightly weak

Key herbs

1. Bai Zi Ren (Sm. Platycladi, 9–15g) — chief; nourishes Heart-Blood; calms Shen; moistens Intestines
2. Suan Zao Ren (Sm. Ziziphi Spinosae, 9–15g) — nourishes Heart-Blood; calms Shen; specifically for insomnia
3. Mai Men Dong (Tb. Ophiopogonis, 6–12g) — nourishes Heart-Yin; clears mild deficient Heat
4. Sheng Di Huang (Rx. Rehmanniae, 9–15g) — nourishes Yin; cools Blood mildly
5. Dang Gui (Rx. Angelicae Sinensis, 6–9g) — nourishes Blood
6. Yuan Zhi (Rx. Polygalae, 3–6g) — calms Shen; opens orifices
7. Wu Wei Zi (Fr. Schisandrae, 3–6g) — astringes Heart Qi; calms Shen

Formula actions

1. Nourishes Heart-Blood and Heart-Yin
2. Calms Shen and stops palpitations
3. Improves sleep onset and depth
4. Mildly moistens the Intestines

Conditions treated

1. Sleep-onset insomnia from Heart-Blood deficiency — see insomnia
2. Light sleep with vivid dreams
3. Mild anxiety with palpitations
4. Anxiety with constipation (Yin-deficient pattern)
5. Post-partum anxiety and insomnia from Blood deficiency
6. Perimenopausal mild insomnia with Yin deficiency

Cautions

Not appropriate for excess Heat insomnia (Liver Fire, Heart Fire) or Phlegm-Heat patterns — the nourishing herbs would aggravate these.

Mild lubricating effect — reduce dose if loose stools develop.

Always consult a qualified Chinese herbalist registered with the RCHM.

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