Souvarchala Lavana
Souvarchala Lavana is a salt or alkali preparation used in Ayurveda. It is sodium chloride combined with sodium sulfide and sodium sulfate, and the hydrogen sulfide it carries gives it an egg-like odour.
| Substance type | Salt or alkali preparation, not a plant |
|---|---|
| Also known as | Souvarchala Lavana, SouvarchalaLavana |
Names and identification
| Language | Name |
|---|---|
| English | Souvarchala Lavana Sochal Salt Kala Namak |
Key Phytochemical Constituents
- Sodium chloride with sodium sulfide
- Sodium sulfate (Na2SO4)
- Iron sulfide (FeS)
- Hydrogen sulfide (H2S - volatile, gives egg-like odor)
- Sodium bisulfate and sodium bisulfite
- Iron compounds (Fe2+, Fe3+)
- Magnesium (trace)
- Potassium (trace)
- 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: traditionally used to reduce gas accumulation and abdominal heaviness
- Mild anti-anemic: contains iron sulfide; traditionally used as a dietary supplement in Pandu (anemia)
- Srotoshodhana (channel clearing): Light, sharp, and hot qualities clear Kapha-obstructed channels; aromatic sulfur compounds have mild expectorant and decongestant properties
Which traditional uses are supported by research?
These summaries come from the source notes, which do not name the studies behind them.
- Gulma and Shula (abdominal tumor/colic pain): traditionally used for abdominal pain and colic.
- Vibandha (constipation): traditionally used as a laxative.
- Pandu (anemia): traditionally used as a dietary supplement in anemia.
What do recent studies show?
No study for this section could be traced to a published paper. 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
Dosage forms and preparation
Dosage Forms: Crystal/powder
Standard Dosage: 0.5–2 g as digestive; in formulations: as directed
Optimal Timing: Before meals as Deepana-Pachana; with Hingvastak Churna
Storage: Airtight container (sulfur compounds are volatile)
Marker Compounds: Sodium chloride, Sodium sulfate, Iron sulfide, Hydrogen sulfide (responsible for smell), Trace minerals
Used in formulations: Part of Pachana (digestive) formulations; Hingvastak Churna, Lavana Bhaskar Churna
Reviewed by Dr. Awadesh Pratap Singh, BAMS, on 11 October 2026. What that review covered.
Consult a qualified vaidya before acting on anything here. Ayurvedic practice is prescribed to a person, not to a condition: the same dravya is given, withheld or substituted depending on your constitution, your agni, the season and what else you are already taking. A page cannot know any of that. Self-prescribing from a reference is how the wrong preparation, the wrong dose or the wrong anupana gets used.
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