# Souvarchala Lavana

> Souvarchala Lavana is a salt or alkali preparation used in Ayurveda. An absence here means we could not identify the source, not that no work exists.

## Names and identification

| Language | Name |
|----------|------|
| English | [Souvarchala Lavana](/herb/souvarchala-lavana/) Sochal Salt Kala Namak |

## Key Phytochemical Constituents

- Sodium chloride with sodium sulfide
- Sodium sulfate (Na2SO4)
- Iron sulfide (FeS, greigite)
- Hydrogen sulfide (H2S - volatile, gives egg-like odor)
- Sodium bisulfate and sodium bisulfite
- Iron compounds (Fe2+, Fe3+)
- [Magnesium](/glossary/compounds-l-o/#magnesium) (trace)
- [Potassium](/glossary/compounds-o-q/#potassium) (trace)
- [Manganese](/glossary/compounds-l-o/#manganese) (trace)

## How does it work?

- Digestive stimulant: Sulfur compounds stimulate bile production in liver and gastric acid secretion, enhancing overall digestive capacity and appetite
- Anti-flatulent: Hydrogen sulfide at therapeutic doses modulates intestinal smooth muscle motility, reduces gas accumulation, and relieves abdominal heaviness
- Mild anti-anemic: Iron sulfide provides bioavailable ferrous iron that can increase hemoglobin levels with regular dietary use
- Srotoshodhana (channel clearing): Light, sharp, and hot qualities clear Kapha-obstructed channels; aromatic sulfur compounds have mild [expectorant](/reference/expectorant/) and decongestant properties

## Which traditional uses are supported by research?

- Gulma and Shula (abdominal tumor/colic pain): Bile-stimulating and smooth muscle-relaxing effects of sulfur compounds validate traditional use in abdominal pain and colic
- Vibandha (constipation): Bile secretion enhancement and mild osmotic effect from mineral content support traditional [laxative](/reference/laxative/) indication
- Pandu (anemia): Iron sulfide content providing bioavailable iron validates traditional use in anemia management as dietary supplement

## What do recent clinical trials show?



*3 further claims previously listed here could not be traced to a published paper and have been removed. An absence here means we could not identify the source, not that no work exists.*

## Recent safety updates

- Maximum daily consumption should not exceed 6 grams; excessive intake may cause sulfide-related GI distress
- Commercial 'black salt' products often use artificial coloring and sulfur additives rather than traditional kiln-firing process; authenticity verification important
- Contraindicated in Raktapitta (bleeding disorders) and hyperacidity when consumed in excess due to heating potency
- Individuals with sulfite allergies should use with caution; hydrogen sulfide content varies by preparation method

## What is it made of?

### Key Active Markers

- Magnesium
- Potassium
- Manganese
- Sodium chloride with sodium sulfide
- Sodium sulfate 
- Iron sulfide 
- Hydrogen sulfide 
- Sodium bisulfate and sodium bisulfite
- Iron compounds 

**Analytical Methods:** HPLC fingerprinting, TLC (identity), LC-MS/MS (marker quantification)

## Dosage forms and preparation

**Dosage Forms:** Crystal/powder

**Standard Dosage:** 0.5–2 g as digestive; in formulations: as directed

**Bioavailability:** Good; sulfur-containing salt with digestive enzyme-like action

**Optimal Timing:** Before meals as Deepana-Pachana; with Hingvastak Churna

**Standardized Extract:** Black salt (Kala Namak) — sulfur-containing rock salt

**Shelf Life:** Indefinite

**Storage:** Airtight container (sulfur compounds are volatile)

**Marker Compounds:** Sodium chloride, Sodium sulfate, Iron sulfide, Hydrogen sulfide (responsible for smell), Trace minerals

**Quality Parameters:** Characteristic sulfurous smell, NaCl content, sulfate content as labeled

**Vehicle (Anupana):** Part of Pachana (digestive) formulations; Hingvastak Churna, Lavana Bhaskar Churna

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Canonical version of this page: https://nighantu.ageayurveda.com/herb/souvarchala-lavana/

## Sources

- Amidha Ayurveda Herb Database (700+ herbs, CC-BY-4.0)
- Web research (clinical trials, WHO monographs, safety databases)
- Ayurvedic Pharmacopoeia of India

Published by Age Ayurveda in the Nighantu. Educational reference only, not medical advice.
Incorporates material from the Amidha Ayurveda Herb Database under CC BY 4.0.