Ashwagandha vs Shilajit: Key Differences, Benefits and Uses (Which One is Better?)

Chronic fatigue and high stress ruin your daily productivity. Shilajit and ashwagandha are two adaptogen supplements designed and marketed to help fix exactly that.

They were first popularised in ancient ayurvedic medicine, and it's not hard to see why they are also popular today when you look into their proposed benefits. 

But choosing between shilajit and ashwagandha can be confusing when generic brands market them as simple "energy boosters" or "stress relievers". 

Key Takeaways

• Shilajit boosts cellular energy by helping mitochondrial ATP production [1] (the energy factories in our body's).

• Ashwagandha supports lower systemic stress by regulating your HPA axis [2] (the areas that manage our body's response to physical, mental, and metabolic stress).

• Take shilajit for physical exhaustion and clean, sustained energy. Ashwagandha helps relieve mental burnout, to calm anxiety or stress and as a sleep aid.

• Combining both provides highly synergistic benefits for hormone production and balance, brain protection and stress resilience [1].

• Solvara offers third-party lab-tested pure versions of both extracts and discounted bundles.

Our guide breaks down the clinical differences in detail between these two compounds so you can pick the exact adaptogen your body actually needs...or learn whether they're both worth taking together!

Shilajit vs Ashwagandha: At a Glance

The easiest way to understand these two compounds is to compare the way they work directly. Below, is a quick look at some key differences, and then we'll discuss in more detail:

Feature	Shilajit	Ashwagandha
Best For	Physical fatigue and ATP production (clean energy boost)	Mental burnout, sleep and cortisol reduction (stress relief)
Active Compound	Fulvic acid and trace minerals	Withanolides
How long it takes to work	Immediate to a few days	1 to 4 weeks of consistent use
Taste Profile	Sharp and earthy	Bitter and root-like
Hormonal Impact	Direct testosterone stimulation	Indirect support via cortisol reduction

 

What is Shilajit?

Shilajit is a dense, tar-like mineral resin formed over centuries from decomposing plant matter in high-altitude mountain ranges like the Himalayas.

It contains over 80 trace minerals and is highly concentrated in fulvic acid. Fulvic acid acts as a powerful carrier molecule that pushes nutrients directly into your cells [1].

How Shilajit works and who it is useful for

Shilajit is effective for athletes, older men, and pretty much anyone suffering from deep physical exhaustion.

If your fatigue feels deep rooted, where even ten hours of sleep doesn't actually fix your tiredness, then shilajit resin could help.

It works by giving your body the mitochondria, the energy factory in the cells of our body, the support needed to restore your energy and drive.

 

What is Ashwagandha?

Ashwagandha is a popular Ayurvedic adaptogenic herb.

It is sourced from the roots of the Withania somnifera plant and contains active biological compounds called withanolides [2].

These are the important compounds you want to look out for in your ashwagandha supplement!

They are responsible for positively altering how your brain and adrenal glands respond to your external stress triggers over time.

How Ashwagandha works and who this herb is useful for

Ashwagandha works best for over-worked professionals, anxious students, busy parents and anyone trapped in a high-pressure and high-stress lifestyle. 

If you are "wired but tired", overwhelmed in the day, but struggle to fall asleep at night because your mind simply won't shut off, then this root forces your nervous system to power down.

 

Solvara Pure Extracts: The Premium Alternative

Generic supplements often use dead leaves, heavy processing, and lack transparent lab testing. Solvara does the opposite.

We bring you pure, single-origin adaptogens straight from the Himalayas, bypassing industrial heat treatments to preserve the fragile active compounds your body requires.

Key features

• Heavy Metal Free: Every batch is independently lab-tested in the UK to guarantee absolute safety and purity.

• Maximum Potency: Solvara Shilajit boasts a massive 80% fulvic acid concentration.

• Pure Root: The Ashwagandha uses 100% sun-dried root powder for maximum withanolide retention.

Pricing

Product	Format	Starting Price	Cost per Dose From..
Solvara Shilajit	Pure Resin (20g)	£44.99	£0.56
Solvara Ashwagandha	Root Powder (100g)	£17.99	£0.45

 

Where Solvara shines

• Verified safety: You get exactly what you pay for without the risk of heavy metal toxicity or lack of effective product.

• High active compounds: Strict traditional processing methods keep the biological payload extremely high.

Who Solvara is best for

• Health purists: People who demand transparent, lab-tested, high-strength botanical extracts without synthetic fillers.

[Order Solvara Shilajit and Ashwagandha Bundle Here]

Key Differences Between Shilajit and Ashwagandha

In this section, we discuss different categories of benefits and how both shilajit and ashwagandha perform in each category:

Energy and Fatigue Benefits: ATP Production vs. Nervous System Regulation

Most brands sell both supplements as generic energy boosters. But they actually work on  different pathways in the body. Understanding this difference is important for fixing your specific type of exhaustion or stress.

Shilajit: ATP Synthesis

Shilajit improves energy through mitochondrial ATP synthesis...what this means in simpler terms is it helps to force your cells to produce more energy from the food you consume.

The mitochondria are the energy factories in your body. ATP is the fuel the mitochondria makes.

Shilajit contains unique compounds called Dibenzo-α-Pyrones that act as energy shuttles inside your body and cells [1]. 

Ashwagandha: the HPA Axis

Ashwagandha doesn't create physical energy. It stops the energy leaks. 

By regulating the hypothalamic-pituitary-adrenal (HPA) axis in our bodys (found deep inside the brain, a gland at the base of our brain and two glands on top of the kidneys), ashwagandha reduces your cortisol levels (stress hormone) [2]. 

Simply put, you'll feel more energetic because your body stops wasting glucose reacting to  non-existent daily threats from stress. Ashwagandha is best for providing physical and mental calm.

 

Hormone Health Benefits and Testosterone Increases

Both shilajit and ashwagandha support male reproductive hormones, stress hormone reduction in both sexes, sexual health and vitality improvements.

But they achieve this in different ways..

Shilajit: Directly Increases Testosterone

Shilajit directly stimulates male hormone production.

Clinical trials showed a 500mg daily dosage increased total testosterone by 20.45%, free testosterone by 19.14%, and DHEA in healthy men after 90 days of consistent, twice daily use [3].

Ashwagandha: Increases Testosterone and Provides Cortisol Reduction

Ashwagandha may help fix the "pregnenolone steal" to increase testosterone, which has been shown across three clinical studies (but if you're worried, ladies, this increase was not shown in women!).

In simple terms, when you are stressed, your body uses the hormone pregnenolone to make cortisol instead of testosterone.

Ashwagandha lowers your cortisol, which frees up the materials your body needs to produce testosterone naturally [2, 4].

In three studies, each lasting approximately 60 days, ashwagandha increased testosterone by between 11.4%-15.2%! [2]

 

Stress and Cognitive Benefits

Your brain needs a stable internal environment to maintain calm and a sharp focus. High daily stress can hurt memory retention and can cause brain fog.

Ashwagandha for Anxiety

Ashwagandha is the winner for chronic anxiety. Studies consistently demonstrate a large reduction in baseline serum cortisol (the stress hormone) after a few weeks of daily use. 

• Study participant's stress and depression scores dropped 44% vs. only 5.5% in the  group who took a placebo
• 72% of users reported improved sleep quality (vs. 29% in the placebo group)

This improves deep sleep and clears stress-induced brain fog [2,5].

Shilajit for Brain Health

Shilajit offers some cognitive benefits through fulvic acid's antioxidant properties. This protects brain tissue from oxidative decay over long periods of time [1]. 

It does not actively sedate the central nervous system or lower your stress hormones but some small human trials have shown reported improvements on memory recall, attention span, processing speed and blood flow to the brain.

 

Muscle Growth, Physical Performance and Recovery Benefits

Both shilajit and ashwagandha have been shown to improve physical and muscular performance, size and recovery. 

Shilajit Benefits for Muscle and Sports Performance

In two shilajit trials on sports performance and muscle recovery, where users took 500mg daily, the following results were seen:

• 32.40% reduction in fatigue severity
• 23.63% reduction in perceived exertion
• 1.36% increase in cardiovascular endurance
• 7.76% improvement in heart rate recovery
• Retention of maximum strength improved (Only an 8.9% reduction in the shilajit group after a set of 100 leg extensions vs. 16% strength decline in the placebo group)

Ashwagandha's effect on muscle strength, size, cardio and fat loss

In a review of all studies on Ashwagandha and its effects on sports performance, the following benefits were found [6]: 

• Muscle Strength: Bench press max increased by 46.0 kg (vs. 26.4 kg placebo) and leg extensions increased by 14.5 kg (vs. 9.8 kg placebo
• Muscle Size: Arm muscle area increased by 8.6 cm² (vs. 5.3 cm² placebo).
• Cardiorespiratory Endurance (VO2 Max): Increased by 13.6% (vs. 9.7% placebo).
• Time-to-Exhaustion: Treadmill stamina increased by 12% (no change in placebo)
• Fat Loss: Body fat percentage decreased by 3.5% (vs. 1.5% placebo)

 

Can you take shilajit and ashwagandha together?

Yes, shilajit can be taken together with ashwagandha. In fact, the combination is complementary and creates a synergistic stack for complete physical and mental optimisation. 

You'll get the best of both worlds when they're used together, without negative interactions.

Here's why..

Synergistic Absorption

The fulvic acid in shilajit acts as an excellent carrier of nutrients and active compounds.

It  pulls the withanolides from ashwagandha deeper into your cells for much better absorption [1]. You'll get a stronger effect from a standard dose.

24-Hour Optimisation Protocol

Taking shilajit in the morning gives your mitochondrial ATP (natural energy fuel) needed to power through your day.

Taking ashwagandha in the evening lowers the stress hormones that have accumulated throughout your day. This allows your brain to switch gears into restorative sleep for better sleep quality [2, 3].

 

Ashwagandha and Shilajit Dose Recommendations

Supplement	Recommended Daily Dosage	Standard Clinical Protocol
Shilajit	250 mg to 500 mg	Often split into two 250 mg doses (morning and afternoon) [1].
Ashwagandha	300 mg to 600 mg	Usually taken once daily or split into two 300 mg doses [2]. If splitting, take one dose at night

 

How to Choose Between Shilajit and Ashwagandha

You actually don't need to choose between ashwagandha or shilajit as they work even more synergistically together, but if you only have room for one, choose your supplement based on the main health condition and wellness needs you need help with. 

Identify exactly why your body is struggling before spending your money and potentially choosing the wrong one. Here's what to choose based on how you're feeling:

Wired and Anxious

Pick ashwagandha. Ashwagandha reduces stress and will help fix your broken sleep patterns, as well as calming your racing mind by putting a natural "brake" on an overactive nervous system.

Lethargic and Weak

Pick shilajit. Shilajit is the better choice for energy as it delivers the trace minerals and the ATP boost your body needs to get you off the couch, attack your day or get back into the gym with intensity.

 

Which Forms of Shilajit and Ashwagandha are Best?

The supplement form of shilajit and ashwagandha you buy is one of the most important considerations you can make, but is rarely spoken about!

Here's which form to choose and why:

Pure Shilajit Resin

Pure shilajit resin is the gold standard as it contains 70-80% of the active beneficial compound, fulvic acid, compared to around 20-50% in capsules after heavy processing and adding fillers. 

Resin, when purified properly, preserves the humic acid and the 85+ trace minerals found in shilajit. 

Pure Ashwagandha Root Powder

This one may come as a surprise, since you've probably read elsewhere that KSM-66 Ashwagandha tablets or capsules are the best form to use. 

Unfortunately, there has been a recent controversy with a popular "cheap" U.K supplement brand whose KSM-66 ashwagandha tested for almost zero withanolides. 

Both the brand and the manufacturer of KSM-66 seem to have doubled-down, claiming that the tests used were the wrong ones to check for KSM-66, but wouldn't divulge which "proprietary" testing method should be used instead..

See the video here and make your own mind up:

Do you see the problem here? How can brands and consumers like you ever know what is in their ashwagandha capsules if they won't divulge their testing method to the public?

This is why at Solvara we use organic, pure ashwagandha root powder and third-party test each batch for withanolide content.

Our public lab tests show 2-3% withanolide content, which means per half-teaspoon of our powder, you get 30-45mg of withanolides.

Most studies showed benefits with 20mg+ of withanolides, so you can be sure you're getting an effective dose with Solvara ashwagandha.

 

Optimise Your Body and Mind with Solvara's Lab-Tested Extracts

Once you've figured out whether you need the cellular energy spark of shilajit or the calming mental brake of ashwagandha (or the powerful combination of both!), be sure you aren't wasting money on generic pills that aren't third-party tested. 

At Solvara, we buck the trend of the U.K laws not requiring food supplement brands to have their products third-party lab tested to confirm you're getting what is advertised.

We think you deserve better and lab-test every batch for transparency to earn your trust. 

Grab your jar of pure, lab-tested Himalayan shilajit and ashwagandha from Solvara today and start repairing your body at a deeper, cellular level.

[Explore the Solvara Range Here]

Frequently Asked Questions

When is the best time to take shilajit?

The best time to take shilajit is in the morning on an empty stomach to align with your natural cellular energy cycle. If splitting your shilajit dose, take your second by early afternoon to avoid an energy boost late at night.

When is the best time to take ashwagandha?

The best time to take ashwagandha is in the late afternoon or evening to wind down your nervous system before bed. If you're splitting your dose, you can take one in the afternoon and the other in the evening.

Are these adaptogens safe for women?

Yes. Ashwagandha safely lowers cortisol for women [2]. Shilajit also helps women with iron deficiency and cellular fatigue. Pregnant women should avoid both due to current lack of safety data. Always check 

Does ashwagandha cause emotional blunting?

High doses of ashwagandha taken for many months may cause some mild emotional flatness in some sensitive users. The way around this is to cycle the herb by taking it for six to eight weeks and resting for one week to prevent receptor downregulation.

References

[1] Stohs SJ. Safety and efficacy of shilajit. Phytother Res. 2014. 28(4): 475-479.

[2] Lopresti AL, Smith SJ, Malvi H, Kodgule R. An investigation into the stress-relieving and pharmacological actions of an ashwagandha extract. Medicine. 2019. 98(37): e17186.

[3] Pandit S, Biswas S, Jana U, De RK, Mukhopadhyay SC, Biswas TK. Clinical evaluation of purified Shilajit on testosterone levels in healthy volunteers. Andrologia. 2016. 48(5): 570-5.

[4] Chandrasekhar K, Kapoor J, Anishetty S. A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of Ashwagandha root in reducing stress and anxiety in adults. Indian J Psychol Med. 2012. 34(3): 255-62.

[5] Mohammad Ibrahim, Ganesh Pawar, Nazia Khan, Bhushan Gudalwar, Shabina Khan, Mohd Mazhar. Therapeutic Effect of Withania somnifera (Ashwagandha) on Depression: A comprehensive review. Natr Resour Human Health 2024; 4 (2): 142-151
https://doi.org/10.53365/nrfhh/177661

[6] Guo S, Rezaei MJ. The benefits of ashwagandha (Withania somnifera) supplements on brain function and sports performance. Front Nutr. 2024 Aug 2;11:1439294. doi: 10.3389/fnut.2024.1439294. PMID: 39155932; PMCID: PMC11327513. [LINK]