Er Long Zuo Ci Wan (耳聋左慈丸): TCM Formula for Tinnitus and Hearing Loss from Liver-Kidney Yin Deficiency
Learn about Er Long Zuo Ci Wan, the classic TCM formula for tinnitus, hearing loss, and ear-related symptoms caused by Liver-Kidney Yin deficiency — nourishing Kidney Yin, subduing Liver Yang, and supporting ear function.
What Is Er Long Zuo Ci Wan?
Er Long Zuo Ci Wan (耳聋左慈丸), the “Deafness Left-Ci Pill,” is a classic TCM formula specifically designed for tinnitus and hearing loss from Liver-Kidney Yin deficiency. It is one of the most commonly prescribed formulas for chronic tinnitus in middle-aged and elderly patients.
The formula name reflects its purpose: Er Long (耳聋) means “deafness,” and it addresses the TCM understanding that the Kidney opens into the ears — when Kidney Yin is depleted, the ears lose their nourishment, resulting in ringing and hearing decline.
Formula Composition
| Herb | Pinyin | Dosage | Role |
|---|---|---|---|
| Prepared Rehmannia | Shu Di Huang | 24g | Chief — Nourishes Kidney Yin and Jing |
| Asian cornelian | Shan Zhu Yu | 12g | Deputy — Tonifies Liver-Kidney, astringes |
| Chinese yam | Shan Yao | 12g | Deputy — Tonifies Spleen-Kidney |
| Alisma | Ze Xie | 9g | Assistant — Drains dampness, prevents cloying |
| Tree peony bark | Mu Dan Pi | 9g | Assistant — Clears deficiency heat |
| Poria | Fu Ling | 9g | Assistant — Drains dampness, supports Spleen |
| Bupleurum | Chai Hu | 6g | Assistant — Disperses Liver, guides upward |
| Magnetite | Ci Shi | 15g | Assistant — Subdues Yang, anchors, calms Shen |
Formula Strategy
The formula is built on Liu Wei Di Huang Wan (the base Kidney Yin tonic) with two key additions:
- Ci Shi (Magnetite): Anchors floating Yang, calms the Shen, specifically targets the ears
- Chai Hu (Bupleurum): Lifts Qi to the ears, disperses Liver constraint
The result: nourish Kidney Yin (root) + subdue rising Liver Yang + direct effects to the ears (branch).
Primary Indications
Core Pattern: Liver-Kidney Yin Deficiency with Yang Rising
Key symptoms:
- Tinnitus — ringing, buzzing, or high-pitched sounds in the ears
- Hearing loss — gradual decline, especially high-frequency
- Worse at night or with fatigue — characteristic of Yin deficiency
- Dizziness, vertigo — from Liver Yang rising
- Lower back pain, weak knees — Kidney deficiency
- Night sweats, hot palms/soles — Yin deficiency heat
Tongue and Pulse
| Sign | Typical Finding |
|---|---|
| Tongue | Red body, little coating |
| Pulse | Thin, rapid, especially at the Kidney position |
Clinical Applications
1. Chronic Tinnitus (慢性耳鸣)
The primary use:
- Long-standing ringing in the ears
- High-pitched (like cicadas or crickets)
- Worse in quiet environments, worse at night
- Associated with aging, overwork, or stress
2. Age-Related Hearing Loss (老年性耳聋)
- Gradual hearing decline in older adults
- Kidney Jing naturally declines with age
- Formula nourishes Kidney to slow progression
3. Tinnitus with Dizziness (耳鸣眩晕)
- Ringing + vertigo or lightheadedness
- Liver Yang rising pattern
- Ci Shi anchors the Yang, Chai Hu regulates Liver Qi
4. Post-Illness Tinnitus
- Tinnitus following severe illness or prolonged stress
- Yin and Jing depleted
- Combined with additional Yin tonics
Comparison with Related Formulas
| Formula | Primary Focus | Key Differentiator |
|---|---|---|
| Er Long Zuo Ci Wan | Tinnitus + Kidney Yin deficiency | Ear-specific, Ci Shi anchors Yang |
| Liu Wei Di Huang Wan | General Kidney Yin deficiency | Base formula, no ear-specific herbs |
| Zhi Bai Di Huang Wan | Kidney Yin + deficiency fire | Hot flashes, night sweats, not ear-focused |
| Qi Ju Di Huang Wan | Kidney-Liver Yin + eyes | Eye-focused, for blurry vision |
| Tian Ma Gou Teng Yin | Liver Yang rising + wind | Headache, dizziness, hypertension |
Dosage Guidelines
| Form | Dosage | Frequency |
|---|---|---|
| Pills | 6-9g | 2-3 times daily |
| Decoction | Full dose | Divided into 2 doses |
| Concentrated pills | As directed | 2-3 times daily |
Best taken with warm water. Long-term use (2-3 months) is typically needed for chronic tinnitus.
Clinical Modifications
| Modification | Add | For |
|---|---|---|
| Severe ringing | Gou Teng, Tian Ma | Stronger Yang-subduing |
| More hearing loss | Shi Chang Pu, Yuan Zhi | Opens orifices, benefits ears |
| Significant dizziness | Long Gu, Mu Li | Anchors Yang |
| Poor sleep | Suan Zao Ren, Bai Zi Ren | Calms Shen, improves sleep |
| Weak lower back | Du Zhong, Xu Duan | Strengthens Kidney |
Modern Research
- Auditory support: May improve blood flow to the inner ear
- Neuroprotective: Base formula (Liu Wei Di Huang Wan) shows neuroprotective effects
- Anti-oxidative: Reduces oxidative stress markers
- Circulation: May improve microcirculation
- Sedative: Ci Shi (magnetite) has calming effects
- Hormonal: May support age-related hormonal changes
Cautions
| Contraindication | Reason |
|---|---|
| Sudden hearing loss | Requires immediate ENT evaluation — not a Yin deficiency pattern |
| Ear infection | Acute otitis media needs antimicrobial treatment |
| Spleen deficiency | Cloying Yin tonics may cause bloating and loose stools |
| Dampness | Rich tonics may worsen damp accumulation |
| Acute Liver Fire tinnitus | Needs heat-clearing, not nourishing |
Key Takeaways
- Er Long Zuo Ci Wan is the primary TCM formula for tinnitus from Kidney Yin deficiency
- Built on Liu Wei Di Huang Wan + Ci Shi (magnetite) + Chai Hu
- Best for chronic, high-pitched tinnitus worse at night in middle-aged/elderly patients
- Long-term use (months) is typically needed for chronic tinnitus
- Sudden hearing loss requires immediate medical evaluation, not this formula
Disclaimer: This article is for educational purposes only. Sudden hearing loss requires immediate medical evaluation. Consult a licensed TCM practitioner for proper use.
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FAQ
What is Er Long Zuo Ci Wan used for?
Er Long Zuo Ci Wan (Deafness Left-Ci Pill) is a classic TCM formula for tinnitus and hearing loss caused by Liver-Kidney Yin deficiency. It treats symptoms like ringing in the ears (especially high-pitched), progressive hearing loss, dizziness, lower back pain, and night sweats — all signs of Kidney Yin not nourishing the ears. In TCM, the Kidney 'opens into the ears,' so Kidney deficiency directly affects hearing. This formula nourishes Kidney Yin while subduing rising Liver Yang, making it specifically suited for the common pattern of tinnitus in middle-aged and elderly patients.
How does TCM explain tinnitus?
TCM explains tinnitus through several patterns: (1) Liver-Kidney Yin deficiency — the most common chronic pattern, causing high-pitched ringing, worse at night, with dizziness and lower back pain; (2) Liver Fire rising — sudden, loud ringing with irritability, red face, headache; (3) Phlegm-Fire — ringing with fullness in ears, dizziness, thick coating; (4) Qi and Blood deficiency — mild ringing, worse with fatigue, pale complexion. Er Long Zuo Ci Wan specifically addresses pattern #1 — Kidney Yin deficiency with Liver Yang rising. The Kidney opens into the ears, so nourishing Kidney Yin directly supports hearing function.
Disclaimer
This content is for educational purposes only and does not constitute medical advice. Sudden hearing loss requires immediate medical evaluation. Always consult a qualified healthcare professional.