Shilajit resin, powder and capsules are all made from raw shilajit that has to be purified first. Resin is the purified material kept as a thick paste; powder is a dried extract, sometimes with an added carrier; capsules hold a fixed amount of powder in a shell. We found no trial comparing the forms with each other, so the practical difference is what each lets you check. If you take medicine, are pregnant or have a health condition, follow your doctor's advice before using any of them.
The format matters less than the batch. What changes between a jar of resin and a bottle of capsules is what else goes in, how a serving is measured and how much you can inspect.
At a glance
- Resin, powder and capsules all start from raw shilajit that has to be purified; "resin" can itself be a water extract standardised for fulvic acid.
- Powders and capsules may carry FSSAI-permitted additives such as maltodextrin, microcrystalline cellulose or magnesium stearate, which the label should declare.
- Resin can be checked for grit or an oily film; no form shows lead, arsenic, mercury or thallium, which a 2025 study found in some commercial supplements at up to 0.5 µg per gram.
- A capsule gives a fixed amount set by the maker; resin is portioned by the user, and India's supplement rules require a stated usage level on the pack.
- No trial compares the forms, and the human evidence for shilajit in any form is small; follow your doctor's advice.
What is the difference between shilajit resin, powder and capsules?
Resin is purified shilajit kept as a sticky paste that you portion and dissolve yourself. Powder is a dried extract, often standardised to a fulvic acid content and sometimes mixed with a carrier. Capsules and tablets put a fixed weight of that powder in a shell. The starting material is the same; the processing, additives and measuring differ.
| Form | What it is | What may be added | How a serving is measured | What you can check yourself |
|---|---|---|---|---|
| Resin | Purified shilajit concentrated to a thick paste | Anything added should be declared; additive rules cover every format | Portioned by the user and dissolved in warm water | Texture, smell, whether it dissolves without grit or film |
| Powder | Dried extract, often standardised to a stated fulvic acid percentage | Diluents or other additives, which the label should declare | By weight or scoop, as the label states | Very little; carrier and extract look alike |
| Capsule or tablet | A fixed weight of powder in a shell, or pressed with binders | Diluents, binders, anti-sticking agents, the capsule shell | Fixed by the maker per capsule or tablet | Almost nothing before you take it |
How is each form processed?
All three start with purification. A 2012 review warns that consuming shilajit without preliminary purification may risk intoxication from mycotoxins, heavy metal ions and other contaminants, and that a purified preparation must be used. After that, resin is sold as a sticky paste, while powders are dried and often standardised.
"Resin" does not mean unprocessed. The resin tested in a 2026 pilot trial was made in a GMP facility by solvent-free water extraction, standardised to at least 60 per cent fulvic acids and tested for heavy metals, microbes, pesticides, aflatoxins and polycyclic aromatic hydrocarbons. That is an extraction and a concentration, much like the extracts sold as powder.
Powdered extracts are usually described by their standardisation. The extract used in a 2019 capsule trial was described as purified and standardised, with at least 50 per cent fulvic acid and 10 per cent dibenzo-α-pyrones, free and bound. That figure describes one product, not shilajit in general.
Shilajit itself varies. The 2012 review puts humic substances, including fulvic acid, at around 60 to 80 per cent of the material; a 2023 review of its chemistry found humic substances made up more than 80 per cent of its weight and calcium, potassium and magnesium almost 20 per cent. It adds that the full composition is still not known with certainty and differs by region.
What carriers and fillers can go into powders and capsules?
FSSAI's health-supplement rules allow named additives in tablets and capsules. Its list includes maltodextrin and microcrystalline cellulose as diluents, magnesium stearate as an anti-sticking agent up to 2 per cent, and gelatin as a binding agent and capsule-shell ingredient. Any of these may sit alongside the shilajit extract, and the label should declare them.
None of these is a sign of a bad product in itself. The point is dilution and arithmetic: the weight printed on the front of a pack may be the weight of the extract, the weight of the fill, or the weight of the whole tablet. Look for the figure given for shilajit or shilajit extract itself.
FSSAI's rules list powders, tablets, capsules and semi-solids among the allowed delivery formats, and they also permit additives in formats other than tablets and capsules. So a resin label deserves the same reading. Our guide on how to identify pure shilajit covers the signs of an added fat or wax in resin.
Which form is easier to verify?
Resin is easier to look at, but no form is easy to verify. Dissolving resin can show grit or an oily film. Nothing you can see, smell or dissolve shows lead, arsenic, mercury or thallium, and those are what analysts have found in some shilajit products. For metals, every form depends on a batch-coded laboratory report.
The 2012 review notes that several Ayurvedic products sold online, shilajit among them, may contain detectable levels of lead, mercury and arsenic. A 2025 laboratory study measured thallium, a toxic metal, in 13 crude shilajit samples and six commercial shilajit supplements: one capsule product and five tablet products. The crude samples held up to 0.226 µg of thallium per gram. The supplements held up to 0.5 µg per gram, and three of the six held more per gram than the highest crude sample. One supplement had none detected.
The authors also noted that the supplement packaging carried little information about chemical ingredients. With capsules and tablets, what is inside cannot be seen, and the pack may not say.
Not every analysis finds a problem. A 2026 study of 12 samples from different regions reported toxic metals below established toxicity thresholds, and a 2025 analysis of one traditionally collected Uttarakhand sample found lead and arsenic below detectable levels. Results vary by source and batch, which is why the report has to match the batch.
A useful report shows:
- a batch code that matches the code on your jar or bottle;
- heavy metals, at least lead, arsenic, mercury and cadmium;
- the fulvic acid content, if the product claims one;
- the name of the testing laboratory and the test dates.
How is each form measured out?
A capsule or tablet carries a fixed amount set by the maker; resin is portioned by whoever uses it. In India, a product sold as a health supplement must state a recommended usage level and print "Not to exceed the recommended daily usage". For crude shilajit, one study notes there are no specific guidelines on daily intake or duration.
In the 2019 capsule trial, each participant's daily amount came in a single capsule, so every serving was the same. In the 2026 resin trial, the investigators gave fixed portions of resin dissolved in about 200 ml of warm water, taken with meals. At home, nobody weighs out a resin portion for you.
FSSAI's rules also require the duration of use where applicable, warnings where excess could be dangerous, and known side effects and interactions. The 2025 thallium study observes that companies making crude shilajit extracts offer their own recommendations for use. We do not suggest an amount. Follow the label of the product you have and, above all, your doctor's advice. Our guide on how to use shilajit resin covers dissolving it.
Does the evidence favour resin or capsules?
No. We found no trial that compares resin with capsules or powder. The authors of the 2026 resin trial write that nearly all earlier human trials tested purified extracts, not resin, and that comparative trials against standardised extracts are still needed. Any claim that one form works better is, for now, unsupported.
The human evidence for shilajit in any form is small. A 2014 review found relatively few well-controlled human studies, and a 2011 review of shilajit in traditional Indian medicine concluded that its bioactivity lacks substantial evidence. The 2019 capsule study was randomised, double-blind and placebo-controlled, with 63 men. The 2026 resin study was an open-label pilot with 25 healthy men, no placebo group, over 28 days; most of its authors work for the company that makes the resin, and they say the design limits causal interpretation.
How is shilajit regulated in India?
It depends on how a product is sold. FSSAI's 2022 health-supplement rules exclude drugs under the Drugs and Cosmetics Act, require "NOT FOR MEDICINAL USE" on the label and bar disease claims unless FSSAI permits them. Shilajit is also an Ayurvedic medicine ingredient, and a product sold as a drug falls outside those rules.
The 2011 review counted shilajit in twenty classical (Sastric) formulations and twenty-four proprietary drugs. Where FSSAI has not set its own purity criteria for a supplement ingredient, its rules let the maker adopt those in pharmacopoeias including the Ayurvedic Pharmacopoeia of India. The sources we opened do not say which category any particular shilajit product falls into, so read the pack: a food supplement carries the "HEALTH SUPPLEMENT" or "NUTRACEUTICAL" wording that FSSAI requires on the front.
The short version
Resin, powder and capsules are the same purified material in different states, and "resin" can be as much an extract as a powder is. Capsules and tablets may contain declared carriers such as maltodextrin or microcrystalline cellulose, and they give a fixed amount per unit; resin is portioned by the user. You can inspect resin for grit or a film, but no form lets you see heavy metals or thallium, so a batch-coded laboratory report matters more than the format. We found no trial comparing the forms, and anyone considering shilajit should follow their doctor's advice.
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.
- Food Safety and Standards Authority of India (2022). Direction regarding operationalisation of FSS (Health Supplements, Nutraceuticals, Food for Special Dietary Use, Food for Special Medical Purpose and Prebiotic and Probiotic Food) Regulations, 2022. FSSAI.
- Kamgar E, Zembrzuska J, Zembrzuski W, Kaykhaii M (2025). Quantifying of thallium in Shilajit and its supplements to unveil the potential risk of consumption of this popular traditional medicine. BMC Chemistry.
- Carrasco-Gallardo C, Guzmán L, Maccioni RB (2012). Shilajit: A Natural Phytocomplex with Potential Procognitive Activity. International Journal of Alzheimer's Disease.
- Yadav D, Mishra S, Shah KM, Reddy ST, Gupta R, Pandey P (2026). Safety and Efficacy of TruBlk Shilajit Resin Supplementation on Physical Performance and Blood Biomarkers in Healthy Adults: A 28-Day Open-Label Pilot Study. Cureus.
- Keller JL, Housh TJ, Hill EC, Smith CM, Schmidt RJ, Johnson GO (2019). The effects of Shilajit supplementation on fatigue-induced decreases in muscular strength and serum hydroxyproline levels. Journal of the International Society of Sports Nutrition.