Shilajit and Ashwagandha Together: What to Know
Shilajit and ashwagandha come from the same Ayurvedic tradition and are often taken together. Here is what each one is studied for and what to know before combining them.
Last updated November 13, 2026
Two different things
Shilajit is a mineral-rich resin from mountain rock, standardized for fulvic acid. Ashwagandha is a plant, Withania somnifera; supplements use an extract of its root. It is classed as an adaptogen, a traditional term for herbs taken to support the body’s response to everyday stress.*
What studies observed for each
For ashwagandha, the best-known trial gave 64 adults 300 mg of root extract twice a day for 60 days. Serum cortisol, the hormone released under stress, was 27.9% lower than placebo at the end (Chandrasekhar et al., 2012).*
For shilajit, eight weeks of purified shilajit at 500 mg a day helped 63 active men retain maximal muscular strength after a fatiguing protocol (Keller et al., 2019).*
Note what is missing: these studies looked at each ingredient on its own. There is very little published research on the two taken together, so anyone who tells you the combination is proven to do more than the parts is ahead of the evidence.
Why people pair them anyway
The reasoning is simple: they are studied for different things, energy and physical performance on one side and stress response on the other, so they are seen as complementary rather than overlapping.* It is also practical. One serving instead of two bottles.
Doses
Study doses and product doses are rarely the same, so compare labels by milligrams. A serving of Alloza has 400 mg of shilajit (75% fulvic acid) and 300 mg of ashwagandha, alongside 150 mg of rhodiola and 100 mg of CoQ10. The full list is on the Supplement Facts panel.
Who should check with a doctor first
- Anyone pregnant or nursing.
- Anyone with a thyroid condition or taking thyroid medication.
- Anyone taking sedatives, blood pressure, blood sugar or immune-suppressing medication.
- Anyone with an autoimmune condition, or with surgery scheduled.
Ashwagandha in particular is known to interact with some medications, so this is a real check, not a formality. Take the label serving and do not stack several products that contain the same herb.
Keep reading
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This guide is general information, not medical advice. Studies cited here looked at individual ingredients, often in different forms and doses, and are not claims about this product.