Yashada

TRADITIONAL VIEW, WITH SAFETY LIMITS

Hindi name: Jasad

What the texts say Yashada does

• Chakshushya — good for the eyes
• Pramehaghna — used in prameha (a group of urinary disorders, including madhumeha)
• Balya — strengthening

What the evidence says. Zinc's role in health is well established; that evidence belongs to characterised zinc salts and does not transfer to the bhasma without study.

Side effects and limits

Zinc in excess causes copper deficiency, and that is the mechanism that matters — prolonged high zinc intake produces a copper-deficiency anaemia and neuropathy.

Avoid or ask first: Copper deficiency.; Prolonged use without monitoring copper.

A traditional classification, not a recommendation. The full safety record is below.

AS THE CLASSICAL TEXTS AND THE API PRESCRIBE

The classical prameha and netra roga metal.

Reported from Sharangadhara Samhita and the Ayurvedic Pharmacopoeia of India. Laisha states what the texts prescribe; it does not recommend. No quantity here is adjusted for a particular person — not for agni, koshtha, bala, age, pregnancy, kidney or liver function, or anything already being taken.

Yashada is classed among the Dhatu — one of the puti loha. Kharpara is NOT a synonym for Yashada. Kharpara is Rasaka, the zinc ore; Yashada is the metal distilled from it, and Indian metallurgists were doing that distillation at Zawar centuries before the process was known in Europe. The two are an ore and its metal, not two names for one thing.

Rasa, guna, virya, vipaka and karma are recorded as the classical texts give them, with the text and section named so a student can open the book and check.

Kharpara (calamine, zinc carbonate) is a related but distinct dravya and the names are used loosely in the market.

Zinc; yashada bhasma is chiefly zinc oxide, ZnO.

A WAY TO REMEMBER IT

Yashada is from yasha, fame — a late Sanskrit name, because zinc was isolated in India before anywhere else and needed a word. Zawar in Rajasthan is the site of the world's oldest known zinc smelting.

Yashada bhasma is the classical mineral of prameha, and India's priority in zinc metallurgy is a genuine and documented piece of the history.

Constituents. Zinc; yashada bhasma is chiefly zinc oxide, ZnO.

• This is a study and clinical reference for practitioners and students. The matra and anupana it records are what the classical texts and the Ayurvedic Pharmacopoeia of India PRESCRIBE — Laisha reports them, it does not recommend them. They are not a prescription for any particular person, and they are not adjusted for your age, agni, koshtha, bala, pregnancy, kidney or liver function, or anything else you are already taking. Only a qualified practitioner who has examined you can do that.
• Traditional classification is recorded as what the classical texts say, with the text and the place in it named. It is not restated as a finding about a human body.
• Nothing here replaces a qualified Ayurvedic practitioner or a doctor.