For most people, shilajit at recommended doses is well-tolerated with no significant side effects. This is consistent with both its centuries-long traditional use and the adverse effect monitoring data from modern clinical trials. However, a small number of users do experience mild side effects — and understanding them in advance allows you to manage them if they occur.
This page covers reported side effects, their frequency, likely mechanisms, and practical management strategies. For the full safety picture, see our is shilajit safe page. For our tested product, see our Himalayan Shilajit Resin page.
Side Effects Reported in Clinical Studies
Human clinical trials on shilajit have generally reported minimal adverse events. The Pandit et al. (2016) study — the most significant human safety study in the recent literature — enrolled 75 male volunteers and monitored safety markers over 90 days of supplementation (250 mg twice daily). The study reported no clinically significant adverse effects and found all biochemical safety markers (liver enzymes, kidney function markers, full blood count) remained within normal ranges throughout.
The Biswas et al. (2010) study similarly noted no adverse effects in participants at 100 mg twice daily over 90 days.
Commonly Reported Mild Effects in General Use
1. Digestive Discomfort (Most Common)
A proportion of new shilajit users report mild digestive symptoms in the first one to two weeks of use — typically described as a slight unsettled feeling in the stomach or increased bowel frequency. This is most common when shilajit is taken on a completely empty stomach and at the higher end of the dose range.
Management: Take shilajit with a small amount of food or dissolved in warm milk rather than plain water. Start with 150–200 mg for the first week before increasing to standard doses. Symptoms typically resolve within 7–14 days as the digestive system adapts.
2. Sleep Disturbance
Some users — particularly those sensitive to energising compounds — report difficulty falling asleep if they take shilajit in the evening. This is not a universal experience and does not occur in the majority of users, but is reported consistently enough to warrant mention.
Management: Take shilajit in the morning or early afternoon only. Avoid evening doses, especially during the first month of use. See our best time to take shilajit page for timing guidance.
3. Increased Body Temperature (Mild Warming Sensation)
Ayurvedic medicine classifies shilajit as having a “warming” energetic quality. Some users notice a mild warming sensation, particularly in the initial period of use. This is typically transient and reflects the Ayurvedic concept of increased metabolic activity rather than a physiological concern.
Management: Reduce dose temporarily if the sensation is uncomfortable. Ensure adequate hydration. Most users report that this sensation fades within a few days.
4. Changes in Uric Acid Levels
Shilajit contains purines, and regular supplementation may modestly increase uric acid production. For most healthy people, this is within physiologically normal ranges and not clinically significant. However, for people with pre-existing gout or hyperuricaemia, even modest increases in uric acid can precipitate symptoms.
Management: People with a history of gout or elevated uric acid should consult their healthcare provider before use and consider periodic monitoring of uric acid levels if they choose to supplement.
Side Effects From Low-Quality Products
The most serious side effects associated with shilajit in published case reports and anecdotal accounts have involved low-quality, unverified products containing elevated heavy metals. Chronic low-level exposure to lead, arsenic, or cadmium — which could occur with inadequately purified shilajit — can cause cumulative toxicity affecting the nervous system, kidneys, and blood.
This risk is entirely avoidable by using third-party-tested products with documented heavy metal compliance. It is not a side effect of authentic, purified shilajit — it is a consequence of adulterated or inadequately processed products. Our heavy metal testing protocols are detailed on our heavy metal testing page and our research and testing page.
Who May Be More Sensitive
Beyond the specific contraindications covered on the safety page, the following groups may have heightened sensitivity to shilajit’s effects and should start at the lower end of the dose range (150–200 mg/day) and increase gradually:
- People with sensitive digestive systems or IBS
- Those who are highly sensitive to caffeine or other stimulants (as shilajit has mild energising properties)
- People new to mineral-rich supplements who may need time to adjust
When to Stop and Consult a Healthcare Provider
Stop using shilajit and consult a healthcare provider if you experience:
- Persistent or worsening digestive pain
- Skin rash or hives (potential allergic response)
- Dizziness, irregular heartbeat, or unusual fatigue
- Symptoms consistent with a gout flare
- Any symptom that persists beyond two weeks of dose reduction
