Shilajit smells and tastes the way it does because it is not a herb but a decomposed, mineral-rich, alkaline humic material from rock. The oldest written description we could open, from 1903, records a leather-like smell that Sanskrit works compare to cow's urine, and a taste that is bitter, saline, pungent and astringent. No study we could find has isolated the compounds behind either. If you take shilajit for a health reason or take any medicine, follow your doctor's advice.
At a glance
- In 1903 David Hooper, in the Journal of the Asiatic Society of Bengal, wrote that black shilajit has "an odour of rancidity which has been stated in Sanskrit works to resemble that of cow's urine", that "the usual odour is that of leather", and that "its taste is bitter, saline, pungent and astringent".
- A 2012 review in the International Journal of Alzheimer's Disease says humic substances make up around 60 to 80 per cent of shilajit, formed as microorganisms decompose plant matter.
- A 2025 laboratory analysis of one Uttarkashi sample, in ACS Omega, measured a pH of 8.11, a loss on drying of 6.67 per cent and a total ash of 57.69 per cent, with potassium the dominant element.
- A 2020 review in the Galen Medical Journal lists benzoic acid, at up to 7 to 8 per cent, and hippuric acid among shilajit's constituents.
- We found no openable study that identified the odour or bitter compounds of shilajit; one 2024 university-journal abstract reports a flavour analysis of a shilajit powder of unstated origin.
What does shilajit smell and taste like?
Strong, earthy and unpleasant to most first-time users: a smell compared to leather, and a taste that is bitter and salty at once. That is a summary of written descriptions, not a tasting panel, because we found no published sensory study of shilajit.
The most detailed description we could open is more than a century old. In 1903 David Hooper, a chemist, read a paper on "Silajit: an ancient Eastern medicine" to the Asiatic Society of Bengal. He described black shilajit as sold "in the form of brown or black cakes, tough or pasty in consistence", with "an odour of rancidity which has been stated in Sanskrit works to resemble that of cow's urine". He added: "The usual odour is that of leather. Its taste is bitter, saline, pungent and astringent." It dissolved in water to "a dark reddish-brown extract with an alkaline reaction".
Modern reviews say less. A 2007 review in Phytotherapy Research describes "a pale-brown to blackish-brown exudation, of variable consistency", and a 2012 review "a blackish-brown powder or an exudate from high mountain rocks". Neither mentions smell or taste.
What did the classical texts say about shilajit's smell?
We could not open the Charaka Samhita, the Sushruta Samhita or an Ayurvedic Pharmacopoeia of India monograph for this article, so we cannot quote them. What we have is Hooper's 1903 report of what the Sanskrit works say: that the odour of black shilajit resembles that of cow's urine, and that shilajatu "imbibes the therapeutic properties of the metals with which it remains associated", the common black kind those of iron and the white kind those of silver. Hooper names Charaka, Sushruta, Bhavaprakasha and the Rasaratna Samuchchaya as the works that set out its uses.
His paper also shows why a smell was needed as an identifier. In the bazaars of his day, three different things were sold as shilajit: a Nepal alum earth, "a more or less pure native aluminium sulphate"; a white "silajatu" from Jaipur with "a strong nauseous odour" that proved to be 64 per cent urea, "crude urea or inspissated urine in a solid state"; and the black, water-soluble, organic kind that matched the Sanskrit description. A leather-like or urinous smell was one of the few checks a buyer then had; a laboratory can now do what a nose cannot.
Why does shilajit smell the way it does?
Because of what it is made of, though no paper we could open connects a named compound to the smell. The 2012 review says shilajit is "formed for centuries by the gradual decomposition of certain plants by the action of microorganisms", and that humic substances, the dark decomposed matter familiar from soil and peat, account for around 60 to 80 per cent of it. The review names fulvic acid, water-soluble across a range of pH, alongside dibenzo-alpha-pyrones, fatty acids, resins, amino acids and polyphenols. Our guide to fulvic acid covers that fraction in detail.
Two other findings bear on smell. The 2020 review in the Galen Medical Journal lists benzoic acid, at up to 7 to 8 per cent, and hippuric acid among the constituents reported in the literature; it presents biological, geological and mineral origins as competing theories. And Hooper found the crystals on old cakes to be potassium and sodium carbonate, which fits his alkaline reaction and the 2025 finding, in one sample, of a pH of 8.11 with potassium the dominant element.
What is missing is the link between any of this and the nose. The seller claim that fulvic acid causes the smell and taste has no source we could find; the reviews that describe fulvic acid say nothing about either. The one direct attempt we found is a 2024 paper in the SUST Journal of Science and Technology, a university journal in Bangladesh, whose abstract attributes the "musky aroma" of a shilajit powder mainly to one compound, oxacycloheptadec-8-en-2-one. The abstract gives neither the powder's origin nor the number of samples, and we could not open the full text, so we report it without leaning on it.
Why does shilajit taste bitter and salty?
Nobody has published a test. The bitter, saline, pungent and astringent taste Hooper recorded is a description, not a chemical finding, and we found no later paper that identified the bitter principle. The analyses do show a material that would be surprising if it tasted mild.
The 2025 ACS Omega analysis of a single 50 g sample from Ganeshpur in Uttarkashi district, Uttarakhand, measured a total ash of 57.69 per cent, of which 87.8 per cent was water-soluble, and a pH of 8.11, which the authors call weakly alkaline. Hooper likewise found "a large quantity of mineral matter or ash" consisting "mainly of carbonated alkalis". An alkaline solution rich in potassium and sodium salts would reasonably taste saline and sharp; that is an inference from composition, not a sensory result, and one sample cannot speak for all shilajit. The bitterness is less explained: humic substances and the phenolic compounds the 2025 paper found by GC-MS are plausible candidates, and plausible is all the record supports.
| Descriptor | What the old accounts say | What laboratory analysis says | Source |
|---|---|---|---|
| Smell | "An odour of rancidity", compared in Sanskrit works to cow's urine; usually "that of leather" | No study identifying the odour compounds; one 2024 abstract names one "musky" compound in a powder | Hooper 1903; SUST JST 2024 |
| Taste | "Bitter, saline, pungent and astringent" | No sensory or bitter-compound study; pH 8.11 and high water-soluble ash in one sample | Hooper 1903; Basavaraja et al. 2025 |
| Colour | "Brown or black cakes" | "Pale-brown to blackish-brown exudation" | Hooper 1903; Agarwal et al. 2007 |
| Consistency | "Tough or pasty" | "Of variable consistency"; loss on drying 6.67 per cent in one sample | Hooper 1903; Agarwal et al. 2007; Basavaraja et al. 2025 |
| In water | Dark reddish-brown alkaline extract | Humic substances 60 to 80 per cent; fulvic acid water-soluble | Hooper 1903; Carrasco-Gallardo et al. 2012 |
Does a bad smell prove shilajit is pure?
No. A strong smell is what every account leads you to expect, so an odourless or sweet product is worth questioning. But a bad smell proves nothing about what else is in the jar.
- A sweet, pleasant or absent smell is a reason to ask questions. Every description we found is of a strong, earthy material.
- A strong smell is not proof of purity. In 1903 alum earth and dried urine were sold under the same name, and the urine sample had "a strong nauseous odour" of its own.
- Batch variation is normal, not a certificate. The 2007 review calls shilajit an exudation "of variable consistency". Variation is expected; it is not evidence either way.
- The contaminants that matter have no smell you can trust. The 2012 review warns that shilajit taken "without preliminary purification" carries a risk of intoxication from mycotoxins, heavy metal ions, polymeric quinones and free radicals.
- A batch certificate answers the question smell cannot. Himdhara's batch 2658, in the manufacturer's certificate of analysis, measured fulvic acid at 76.5 per cent against a specification of more than 60 per cent, and lead, arsenic, mercury and cadmium each passed the Ayurvedic Pharmacopoeia of India limits. The certificate is on the lab reports page.
The home tests people pass around are covered in our guide on how to identify pure shilajit, with the same caution: they can rule some things out, but only an analysis can rule contamination in or out.
Does processing change the smell and taste?
It must, though no study measures it. Hooper described the cakes hill traders sold as "partially purified", and the 2012 review says a purified preparation must be used, so the shilajit you buy has been processed at least once. In Ayurvedic practice that purification is shodhana, and the agents used become part of the product. Himdhara's Shilajit Gold Resin, for example, is shilajit purified with triphala and blended with Ashwagandha, Safed Musli, Shatavari, Gokhru and gold ash, so its smell and taste are those of a formulation, not of plain resin. Handling the taste of plain resin is covered in our guide on how to use shilajit resin; the formulation itself is on the Shilajit Gold Resin page.
The short version
Shilajit smells and tastes strong because it is a decomposed, alkaline, mineral-rich humic material, not a herb. Hooper's 1903 paper records a leather-like smell that Sanskrit works compare to cow's urine, and a bitter, saline, pungent, astringent taste. Modern analyses describe humic substances, fulvic acid, benzoic and hippuric acids, an alkaline pH and a high mineral ash, but none ties a named compound to the smell or the bitterness. An odourless or sweet product deserves questions, but smell proves nothing about purity; a batch certificate does. Follow your doctor's advice on whether to take shilajit at all.
Sources
Further reading behind the figures above. Himdhara's own numbers — yields, batch results — come from our production records and the batch reports on the lab reports page.
- Hooper D (1903). Silajit: an Ancient Eastern Medicine. Journal of the Asiatic Society of Bengal, 72, 98–103.
- Carrasco-Gallardo C, Guzmán L, Maccioni RB (2012). Shilajit: A Natural Phytocomplex with Potential Procognitive Activity. International Journal of Alzheimer's Disease.
- Basavaraja D, Katkar R, Dhaka P, Tomar S, Sircar D, Chikara G, Panda PK (2025). Chemical Analysis of Native Himalayan Shilajit: An Evaluation of an Ayurvedic Formulation. ACS Omega.
- Agarwal SP, Khanna R, Karmarkar R, Anwer MK, Khar RK (2007). Shilajit: a review. Phytotherapy Research, 21.
- Rahmani Barouji S, Saber A, Torbati M, Fazljou SMB, Yari Khosroushahi A (2020). Health Beneficial Effects of Moomiaii in Traditional Medicine. Galen Medical Journal.