- Not studied in people with long-term conditions.
- Kidney disease affects how metals are cleared.
- Animal research suggests blood sugar effects.[1]
- Medicines for conditions raise interaction questions.
Why conditions change the picture
The human trials of shilajit mostly involved healthy adults.[2][3] People with long-term conditions are different in three ways that matter. Their organs may handle minerals and metals differently, they are more likely to take regular medicines, and some conditions make them more vulnerable to contaminants or infections. None of these has been studied for shilajit, so the safest assumption is that effects are unknown, not that they are absent; see medication interactions.
Conditions and what to consider
| Condition | Main consideration | Read more |
|---|---|---|
| Kidney disease | Minerals and metals cleared less effectively | Kidney health |
| Liver disease | How substances are processed; contaminants | — |
| Diabetes | Possible blood sugar effects in animal research[1] | Blood sugar |
| Heart disease | Interactions with heart medicines unstudied | Interactions |
| Thyroid disorders | Minerals and thyroid medicine absorption | Interactions |
| Autoimmune conditions | Immune claims and immunosuppressant medicines | Immune function |
| Cancer | A lab study found reduced chemotherapy effect[4] | Cancer research |
| Iron overload | Products marketed as iron sources | Iron |
Kidney disease deserves particular caution
Healthy kidneys remove excess minerals and some metals from the body. When kidney function is reduced, these can accumulate. Cadmium in particular is cleared very slowly and is associated with kidney harm over long-term exposure, which is one reason GB law caps it at 1.0 mg/kg in supplements.[5] If you have chronic kidney disease, speak to your kidney team before taking shilajit and bring the product’s batch report; see cadmium.
Diabetes
Reviews of shilajit list effects on blood sugar among the properties seen in animal research.[1] There are no human studies, and no studies with diabetes medicines. If you have diabetes, especially if you use insulin or medicines that can cause low blood sugar, talk to your diabetes team before taking shilajit, and monitor your levels if you start. Never adjust diabetes medicines yourself in response to a supplement.
Weakened immune systems
People having chemotherapy, taking immunosuppressants after a transplant, or with certain conditions are more vulnerable to infections from contaminated products. Microbiology results on the batch report matter more for them, and so does medical advice before starting; see microbial contamination.
How to discuss shilajit with your doctor
- Say why you want to take itYour goal helps the conversation.
- Bring the product and batch reportOr photos of the label and report.
- List your medicinesIncluding other supplements.
- Agree how you will monitor itFor example, at your next blood test.
Some clinicians will be cautious because evidence is limited. That is a reasonable response, not a dismissal.
If you go ahead
If your doctor agrees you can try shilajit, choose a batch-tested product, stay within the label serving, start it on its own rather than alongside other new supplements, and stop if you notice new symptoms. Mention it at routine check-ups so any changes in blood tests can be interpreted correctly; see when to stop.
Heart and blood pressure conditions
People with heart conditions often take several medicines, including blood pressure tablets, statins and blood thinners. None of these has been studied with shilajit. If you have a heart condition, ask your pharmacist or cardiology team before starting, and report symptoms such as dizziness, palpitations or swelling straight away; see when to stop.
Mental health conditions
Shilajit is sometimes marketed for stress or mood, but its evidence there is preclinical only; see stress and mood. If you take medicines for a mental health condition, check with your prescriber or pharmacist before adding any supplement, and never stop prescribed treatment in favour of one.
Putting it into practice
Before starting shilajit, list your conditions and medicines, take the product and its batch report to your pharmacist or doctor, and agree a plan. If you go ahead, start on its own, stay within the label serving, and mention it at every review so it stays on your record.
When your condition changes
Conditions and treatments change over time. Revisit your decision about shilajit whenever you have a new diagnosis, a change in medicines or a significant change in test results, rather than assuming earlier advice still applies.
The bottom line
Shilajit hasn’t been studied in people with long-term health conditions. Kidney disease, diabetes, immune problems and cancer treatment call for particular caution. Talk to your GP, specialist or pharmacist first, bring the batch report, and agree how you will monitor any effects.
Frequently asked questions
Can I take shilajit with kidney disease?
Speak to your kidney team first. Reduced kidney function affects how minerals and metals are cleared.
Is shilajit safe with diabetes?
Check with your diabetes team. Animal research suggests blood sugar effects, and interactions with diabetes medicines haven’t been studied.[1]
Can I take shilajit with a thyroid condition?
Ask a pharmacist, especially about timing with thyroid medicines.
Is shilajit safe with liver disease?
Not studied. Speak to your specialist before taking any supplement.
Can I take shilajit with an autoimmune condition?
Check with your specialist, particularly if you take medicines that affect the immune system.
Can I take shilajit during cancer treatment?
Speak to your oncology team first. One lab study found it reduced chemotherapy effect.[4]
Should I bring the batch report to my doctor?
Yes. It shows the product’s contaminant results.
What if my doctor says no?
With limited evidence, caution is reasonable. Ask what would change their view.
Sources & further reading
Primary research, regulators and standards bodies are cited first. A source being listed here does not mean it supports every claim made by sellers; it supports the specific statement it is attached to.
- Agarwal SP, et al.. Shilajit: a review. Phytotherapy Research 21(5):401–405, 2007. doi:10.1002/ptr.2100; PMID 17295385. View source (opens in a new tab) [Review]
- Pandit S, Biswas S, Jana U, De RK, Mukhopadhyay SC, Biswas TK. Clinical evaluation of purified Shilajit on testosterone levels in healthy volunteers. Andrologia 48(5):570–575, 2016. PMID 26395129. View source (opens in a new tab) [Randomised controlled trial]
- Keller JL, Housh TJ, Hill EC, Smith CM, Schmidt RJ, Johnson GO. The effects of Shilajit supplementation on fatigue-induced decreases in muscular strength and serum hydroxyproline levels. Journal of the International Society of Sports Nutrition 16:3, 2019. doi:10.1186/s12970-019-0270-2; PMID 30728074. View source (opens in a new tab) [Randomised controlled trial]
- Bağ FŞ, Ovalı F, Vatansev H. Antioxidant potential and chemotherapy-modulating effects of shilajit in A549 lung cancer cells. Türk Medline record. View source (opens in a new tab) [Laboratory study]
- European Commission (UK version on legislation.gov.uk). Commission Regulation (EC) No 629/2008 amending Regulation (EC) No 1881/2006 setting maximum levels for certain contaminants in foodstuffs. legislation.gov.uk, 2008. View source (opens in a new tab) [UK legislation (retained)]