Vajra Bhasma: Traditional Uses, Evidence & Safety

Q: What is the recommended dose?

Our editorial rule requires a pharmacopoeial or clinicaltrial dose. None exists in the available sources, so we state none. And we do not repeat the milligram figures found on commercial sites, which are not evidencebased.

TL;DR

Vajra Bhasma, "diamond ash," is the calcined preparation of diamond, among the most labor-intensive bhasmas in Rasashastra. The modern record contains no efficacy trials at all. What it does contain: a rat toxicology study. And a published case report linking the preparation to a life-threatening skin reaction (toxic epidermal necrolysis). This article is therefore mostly about safety, because that is where the evidence is.

What it is

Vajra is diamond. In Rasashastra it is treated as one of the most demanding mineral drugs to prepare. A study in the Journal of Ayurveda prepared it by a classical route: purification (shodhana) by quenching (nisechana) rough diamond particles in rose distillate (Gulab Arka). Calcination (marana) came next. With levigation (bhavana) in rose distillate up to the 14th puta (heating cycle). And in aloe vera juice (Kumari Swarasa) thereafter. Sixty putas in total (Journal of Ayurveda, via Ovid).

The same paper notes that more than 13 GMP-certified companies produce and distribute Vajra Bhasma. Most manufacturers follow the method in Rasa Tantra Sara Evam Siddha Yoga Sangraha. Clinicians mostly prescribe these commercial formulations. Meanwhile, comprehensive safety information has been scarce (Journal of Ayurveda).

Traditional use

Classical Rasashastra texts include Vajra among the mineral drugs prepared as bhasma. Its traditional reputation rests on diamond's emblematic hardness and strength. The preparation's unusually long marana (60 heating cycles in the studied method) reflects the status the texts give it. Specific classical indications for Vajra Bhasma could not be verified against a qualifying source for this article, so none are listed here. No modern study has tested any efficacy claim.

What modern research says

Toxicology: acute and subacute study in rats

The Journal of Ayurveda study set out specifically to examine the toxicological characteristics of Vajra Bhasma in albino rats. It ran acute and subacute toxicity experiments on the preparation made by the 60-puta method described above (Journal of Ayurveda).

Caveat: only the abstract/summary was accessible for this article, so exact doses, sample sizes, and numerical outcomes could not be verified here. The study's stated aim and design: formal acute and subacute toxicity testing of a classically prepared Vajra Bhasma. The strongest safety evidence located for this drug.

Case report: toxic epidermal necrolysis (Lyell syndrome)

Channabasappa et al. reported in BMJ Case Reports (2020) a 42-year-old woman who developed toxic epidermal necrolysis. It is a potentially fatal exfoliating skin reaction. In her case it covered 80% of her body surface, with breathing difficulty, dizziness, and anuria. This was on the 8th day of taking Vajra Bhasma prescribed by an Ayurveda physician for trigeminal neuralgia. She recovered after 17 days with immunoglobulin treatment and withdrawal of the drug (BMJ Case Reports 2020;13:e237891).

A case report cannot prove causation. TEN is an immunological idiosyncratic reaction. And the preparation's quality and exact composition in this case are unknown. But it is a published, peer-reviewed serious adverse event associated with this drug, and it cannot be set aside.

What the evidence does not support (yet)

No efficacy evidence of any kind. No animal pharmacology, no clinical trials, no case series showing benefit.
No established safe dose in humans. The rat toxicology study is the only formal safety testing found; its full results could not be verified here.
No data on pregnancy, breastfeeding, children, or drug interactions.

Safety & contraindications

This is the section that matters most for Vajra Bhasma:

A published life-threatening skin reaction. Toxic epidermal necrolysis is rare and idiosyncratic, but the BMJ case report means this drug carries a documented serious-adverse-event signal. Any rash, blistering, or mucosal lesions after starting it warrant immediate medical attention and stopping the drug.
Mineral preparation, extreme processing. Sixty heating cycles with herbal media are meant to render diamond therapeutically usable. Which is also why preparation quality is everything. Use only GMP-certified products from reputable manufacturers; never attempt home preparation.
No self-medication. Given the adverse-event signal and the absence of efficacy data, this is strictly a practitioner-supervised medicine, if used at all.

FAQs

What is Vajra Bhasma?

Calcined diamond ash: a Rasashastra bhasma prepared through repeated purification and (in the studied method) 60 heating cycles with rose distillate and aloe vera juice.

Does it work for anything?

No modern study has tested whether it works for any condition. Its traditional standing in Rasashastra rests on diamond's emblematic status among minerals. But specific classical indications could not be verified against a qualifying source. So this article makes no traditional efficacy claim either.

Is it safe?

The only formal safety testing found is a rat toxicology study whose full results could not be verified here. Separately, a peer-reviewed case report associates it with toxic epidermal necrolysis, a life-threatening skin reaction. Treat it as a drug with a real, if rare, serious-risk signal.

What is the recommended dose?

Our editorial rule requires a pharmacopoeial or clinical-trial dose. None exists in the available sources, so we state none. And we do not repeat the milligram figures found on commercial sites, which are not evidence-based.

Annotated Sources

The 60-puta preparation method (rose-distillate quenching, aloe vera levigation), the note on 13+ GMP manufacturers following Rasa Tantra Sara Evam Siddha Yoga Sangraha, and the rat acute/subacute toxicity study design are from "Safety Evaluation of Vajra Bhasma (Diamond Ash)," Journal of Ayurveda (Ovid). The toxic epidermal necrolysis case (42-year-old woman, 8th day of use, 80% body surface, recovery after immunoglobulin and drug withdrawal) is Channabasappa, Gupta & Dharmappa, BMJ Case Reports 2020;13:e237891 (record).

[Mrigashringa Bhasma](/learn/herbs/mrigashringa-bhasma) (another classical bhasma with limited modern evidence)
[Jahar Mohra Pishti](/learn/herbs/jahar-mohra-pishti) (another classical mineral preparation)

Disclaimer

This article is for educational purposes only and is not medical advice. Vajra Bhasma has no efficacy evidence and a published case report of a life-threatening skin reaction; its formal safety testing is limited to one animal study. Never self-prescribe it, never prepare it at home, and stop it immediately and seek emergency care if any skin blistering or rash develops. Use only under the supervision of a qualified practitioner — especially if pregnant, breastfeeding, managing a medical condition, giving it to a child, or taking prescription medicines.