Lac: Benefits, Uses & Dosage

If you have ever seen a classical Ayurvedic formula for a broken bone, there is a good chance it contained Lac (Laksha). This is not a plant at all. It is the resinous secretion of the lac insect, the same raw material that gives us shellac.

Its botanical-style name is Laccifer lacca (Kerr), and the Bhavaprakash Nighantu names bone healing (Asthisandhana) as its prime action. It is also classed as a hemostatic, meaning a substance that stops bleeding, and it is the key ingredient in Laksha Guggulu, a formula used for fracture healing.

Lac turns up across the classical texts: in the Charaka Samhita for chest injury and anemia, in the Sushruta Samhita for eye complaints and for fumigating a poisoned atmosphere, and in the Sharangadhara Samhita as Laksha Taila, an oil for fractures. It is astringent, bitter and sweet in taste, light in quality and cooling in potency.

Bone and Fracture Healing

This is the reason Lac is known in Ayurveda. The Bhavaprakash Nighantu lists bone healing (Asthisandhana, literally "joining of bone") as its prime action, and it is used for bone fractures (Asthi Bhagna).

Two classical formulas carry this use: Laksha Guggulu, taken internally for fracture healing, and Laksha Taila, an oil the Sharangadhara Samhita (Madhyama Khanda, Chapter 9) lists for fracture healing.

Stopping Bleeding and Chest Injury

Lac is classed as a hemostatic (Stambhana), an action that holds back flow, especially of blood. Its astringent taste and cooling potency (Sheeta Virya) fit this role.

If there is fresh injury to the chest, then the patient should be given laksha (lac) along with milk and honey.

Charaka Samhita, Chikitsa Sthana, Chapter 11

Anemia

In the Charaka Samhita chapter on anemia (Chikitsa Sthana, Chapter 16), Lac is boiled into a decoction with Beejaka, Triphala and grapes. Here it is a supporting ingredient, not a blood builder on its own.

Skin and Complexion

The Bhavaprakash Nighantu also lists Lac as improving complexion (Varnya), and it is linked to skin disorders. The Sharangadhara Samhita (Uttara Khanda, Chapter 11) includes Lac in an anti-leucoderma paste with Vakuchi, Pippali, black sesame and other ingredients in equal parts.

Eyes

The Sushruta Samhita (Uttara Tantra, Chapter 17) describes a preparation of madhuka, utpala, kushtha, grapes, Lac and sugar, boiled with rock salt, that "destroys pain and redness" in eye conditions.

Medicated Smoke and Fumigation

The Ashtanga Hridaya lists Lac among the drugs for medium-strength medicated smoking (Dhumapana). The Sushruta Samhita (Kalpa Sthana, Chapter 3) recommends burning Lac with turmeric and other substances in the open to purify a poisoned atmosphere.

Lac is not a loose herb you buy and dose yourself. Every use in our sources is a classical compound preparation, so the practical way to take it is through a finished formula from an Ayurvedic pharmacy.

The vehicle (Anupana), meaning what a remedy is taken with, matters here. The Charaka Samhita pairs Lac with milk and honey for chest injury.

Our sources give no standalone dose for Lac and no seasonal guidance, so follow the label of a classical product or a practitioner's instructions.

Our sources record no specific contraindications or drug interactions for Lac. That is a gap in the data, not a promise of safety, so treat it with the caution you would give any less-studied substance.

• Never take commercial shellac. Lac and furniture shellac share a source, but finishes and coatings are not medicine. Medicinal Lac comes only in purified classical preparations.
• Fractures need medical care first. Classical use of Lac for bone healing is a complement to having the break assessed and set, never a substitute.
• Bleeding needs a diagnosis. Lac is hemostatic, but ongoing or unexplained bleeding needs a medical check.
• Some classical compounds contain minerals. A few classical preparations that include Lac also contain arsenic compounds such as realgar. Use only products from a reputable pharmacy, under guidance.

Our sources contain no data on overdose or on use in pregnancy and nursing.

Lac has few true alternatives because its main role, bone healing, is unusual. These comparisons draw on the formulas and herbs it appears with in the classical texts.

Pregnancy & Nursing

Our sources contain no safety data on Lac in pregnancy or nursing. Without that data, avoid it unless a qualified practitioner who knows your situation prescribes it.

Children

There is no child-specific dosing in our sources. Do not give Lac preparations to children without professional guidance.

Elderly

Fractures are a common concern in later life, and Laksha Guggulu is the classical formula for fracture healing. Our sources give no age-specific dose, so an older adult should use it only as a complement to medical fracture care and with a practitioner's input, especially if taking other medicines.

Athletes

Our sources do not discuss Lac for athletes. Its classical use for bone injury and chest injury may interest anyone recovering from a sports injury, but the injury itself needs proper medical assessment first.