Best Ashwagandha Supplements: In-Depth Review

Updated on October 29, 2022
 by — reviewed by Jason Williams, PhD (Contributor: George Collins / Editor: Yoko Hill)

An in-depth guide for everything you need to know about Ashwagandha supplements. This in-depth review looks at what Ashwagandha is, how the supplements work, and which supplements are the best to use. We also have a look at some user reviews and answer some frequently asked questions.

Ashwagandha is a relatively unheard-of supplement that is starting to grow in popularity. Studies have linked the supplement to a variety of brain-boosting benefits and stress-reducing effects. We’ve all experienced times where we could do with a boost to get us through the day or something to make us feel more positive.

Ashwagandha supplements can help us feel like that which is why we have put together this review.

This ancient medicine can be used to improve a number of our cognitive functions and productivity. That’s why we want to tell you everything you need to know. In this review, we will take a detailed look at what the Aswaganha supplement is and how it can help you. We will also look at the potential side effects and which supplements you should try.

Let’s get straight into the review.

What is Ashwagandha?

Best Ashwagandha Supplements

Ashwagandha is a small bushy plant found in the dry climates of North Africa, India, and the Middle East. This small plant also known as Indian ginseng, winter cherry, or poison gooseberry has been used for over 3000 years in ancient medicine thanks to its amazing medicinal properties and health benefits.

It is one of the most important medicinal herbs in Ayurveda which is an alternative form of Indian medicine. Interestingly Ashwagandha is Sanskrit for the smell of the horse in reference to its one-of-a-kind smell and ability to increase strength.

Its popularity today comes from its use as a supplement, offering users a variety of health benefits. The Ashwagandha plant is an adaptogen, which helps support the body when managing different stresses.

Now you know what Ashwagandha is we can start looking at what the Ashwagandha supplements are.

What is an Ashwagandha Supplement?

As you probably already know, a supplement is a capsule, tablet or powder made up of natural ingredients that have beneficial impacts on our bodies. An Ashwagandha supplement isn’t too much different.

Commonly coming in the shape of a white capsule or powder, Ashwagandha supplements contain the best parts of the plant to support cognitive health, manage our mood and stress levels, promote a healthy body weight, aid muscle recovery, and improve brain function. They can also be used in the treatment of sleeping disorders like insomnia.

Most Ashwagandha supplements are produced using the roots and leaves of the plant. It is the chemical compounds found within these parts of the plant that provide the best benefits. The chemical compounds in the roots contain steroidal lactones of withanolides and withaferins, alkaloids, and saponins. The leaves also contain withanolide-R and withasomniferin-A.

How Do the Supplements Work?

Although the supplements are not fully understood yet, research would suggest that Ashwagandha creates an anti-stress effect through the suppressing of glutamate neuron excitations and corticosterone signaling.

It is also believed that it may increase serotonin levels in the brain and enhance the GABA receptors. This alters our mood, making us feel more positive and focused. The enhancement of GABA receptors also helps to boost the dopamine levels in the brain which increases our ability to focus, feel pleasure, and concentrate.

The Benefits of Ashwagandha Supplements

We have already mentioned a few benefits of Ashwagandha supplements but now we will look at them in more depth.

Reduces Anxiety, Stress, and Depression

Recent studies have shown that Ashwagandha supplements have a significant impact on those suffering from anxiety and stress.

The supplement can reduce the build-up of cortisol (stress hormones) in those with chronic stress conditions. There is also evidence that it may be able to change the brain’s chemical signals to block the brain’s pathway. This helps to relieve stress and also helps you manage stressful situations better.

Increased Muscle Mass and Strength

This is an excellent benefit for any gym lovers out there. Ashwagandha can increase testosterone levels which helps create a significant increase in muscle mass and strength. As a result of this, the supplement is becoming popular with many bodybuilders, with most reporting an improvement after 30 days of using Ashwagandha.

Improved Brain Function and Memory

There are studies to show that brain function and memory can be improved by taking Aswagandha supplements. The supplements increase reaction time and also reduce the chance of oxidative damage. This reduction of oxidative damage can protect us against memory loss and assist in keeping our brain functioning well.

By protecting and improving our brain we can focus for longer and take in more information. This will help us be more productive at work and ace our final exams.

Reduces Blood Sugar Levels

Ashwagandha influences your body’s insulin secretion which in turn modifies your blood composition. This helps lower blood sugar levels whether you have diabetes or not. In fact, some research has concluded that these supplements can be as effective as some diabetes-specific medicines.

Could Potentially Improve Heart Health

Aswagandha can also decrease the levels of blood fats in the body such as cholesterol. In some cases, a decrease of up to 17% has been seen. These decreases in fats will have a significant positive impact on your health.

Boosts Your Immune System

Feeling stressed can have a big negative impact on your immune system. By reducing stress through the use of Ashwagandha supplements you give your immune system the chance to catch up and repair itself. As a result of this, you will feel more positive and alive again.

The Best Ashwagandha Supplements

There is a wide range of Ashwagandha supplements available to buy but not all of them are as good as you would expect. It is important to find the highest quality supplements that will give you all the benefits in no time at all. Some supplements aren’t formulated with the best natural ingredients. This can make them less effective and slower than the best ones out there.

Luckily for you. you don’t need to worry about trawling the internet trying to find them. We have done that for you. We have found the three best supplements available now. Below you will find more information about each of these supplements and what makes them so good.

KSM-66 Ashwagandha Powder & Capsules

KSM-66 Ashwagandha supplements from Pure Nootropics is the best supplement on the market. We recommend this supplement over others because of the KSM-66 product.

KSM-66 is a trademarked product created from an extraction method that took 14 years to refine. It is one of the best types of fast-acting Ashwagandha supplement you can find. With this supplement, you can expect a high concentration of the best Ashwagandha roots.

You will experience the effects of the capsules in no time at all, feeling more awake, positive, and healthier than you have ever done before.

The 300mg capsules will help you in your everyday life, whether it be through helping you focus at work, work harder in the gym, or reduce the stresses you can’t overcome.


The recommended dosage for this supplement is one 300mg capsule up to three times a day. The only reason this should be different is if a health care professional has told you otherwise. Wash the capsule down with a glass of water or take it with some food.


This supplement contains organic KSM-66 Ashwagandha, milk, vegetarian capsule, maltodextrin, and vegetable stearate.

Ashwagandha - 10% Withanolides - High Strength

Ashwagandha - 10% Withanolides - High Strength by Time Health is one of the strongest supplements available. Made with Tibetan Ashwagandha, Time Health claims their potent products are just as effective as KSM-66. Users of this capsule supplement have reported feeling great just 24 hours after taking it.

Like the KSM-66 products, this supplement improves general mood and sadness, helping those with anxiety and depression feel more positive and motivated. Increasing mental clarity and reducing stress allow us to start focussing more on things that are important to us as well as giving our body the chance to function properly.


The dosage for this supplement is slightly different from the KSM-66 product. The recommended dosage of this high-strength supplement is 1 tablet up to 4 times a day, again unless told otherwise by a medical professional.

These capsules are 500mg in size so they do pack more of a punch. Bear this in mind when taking the supplements for the first time. You may want to ease yourself in with just one tablet a day to start with.

The capsule can be taken with or without food and washed down with a drink.


This supplement contains Ashwagandha root standardized to 10% Withanolides. The capsules themselves are made from tapioca. This means they are also suitable for vegans and vegetarians.

Organic Ashwagandha 500mg

Organic Ashwagandha capsules by Zipvit are 100% natural supplements containing KSM-66. This is a popular product and for good reason. The supplement is potent and effective in reducing cortisol levels to reduce stress.

Other benefits include feeling more positive and better in general health. Some users of this supplement have also reported seeing an increase in muscle mass and focus.

The capsules for this supplement also come in 500mg, making them a strong supplement that will act quickly in improving your brain’s cognitive functions. This supplement will help you eradicate a variety of life’s stresses.


The recommended dosage for this supplement is just one capsule per day. You shouldn’t take any more than this or you could risk experiencing some side effects. Take the capsule with or without food and with a drink.


This supplement contains Ashwagandha KSM-66 and a vegan HydroxyPropyl MethylCellose capsule.

Side Effect From Taking Ashwagandha Supplements

Ashwagandha has been through many clinical trials to guarantee it is safe to consume. However, like many other supplements, there are some mild side effects that are worth knowing about.

It is worth noting that most people don’t experience any of these side effects but if you unfortunately do, it is a good idea to stop taking the supplements before getting in touch with your doctor. They will then advise you on the best thing to do.

It is important when taking any new supplements to check with your doctor first anyway. Taking the supplements might interfere with the drugs you already take. If this is the case your doctor can tell you to stay away from them.


A small number of people have reported experiencing headaches after using Ashwagandha supplements. This isn’t uncommon when starting to take a new supplement and it shouldn’t last long. If you do experience a persistent headache though it could lead to some nasty migraines so make sure you let your doctor know.

Stomach Aches

You might experience an upset stomach when taking these supplements. This could cause you some discomfort or result in a spell of diarrhea. People who have experienced this all stated that the feeling didn’t last too long and they soon felt great again.


Some individuals have been known to feel tired after taking Ashwagandha. This has been linked to the reduction of blood pressure. Low blood pressure is a good thing but when it gets too low we can start to feel tired. If you don’t need to lower your blood pressure but still take one of these supplements you could experience a tired feeling.

Experiences Shared on Reddit

Here are some reviews from current users of Ashwagandha supplements.

According to Snoo-80094:

“I take these. They've certainly helped with my anxiety and sleep.”

According to Pump-Chaser:

“I feel the calming effect and sleep benefits within 30mins. I feel the benefits in the gym within a few days. Nothing to report on libido yet, it feels the same. Almost a week on ash, my first time taking it.”

Frequently Asked Questions (FAQ)

Your questions answered.

How Long Will Ashwagandha Take to Work?

Everybody’s body is different so it can’t be said for sure how long it takes to work. Having said that a handful of people have reported experiencing effects after 24 hours. Most people though report experiencing positive changes after approximately two weeks. At the moment there are no conclusive signs that this product has an immediate impact.

Is It Safe to Take Ashwagandha Daily?

Yes, it is completely safe to take Ashwagandha daily as long as you don’t take more than the recommended daily dosage. If you do this is when you can expect to start seeing some negative side effects.

Who Shouldn’t Take Ashwagandha?

There are some groups of people who shouldn’t take Ashwagandha. These include people who are pregnant or breastfeeding, have low blood pressure, stomach ulcers, or have thyroid disorders.

People who take a lot of other medication should also check with their doctor before taking these supplements. It might turn out that the drugs they are already on don’t go well with Ashwagandha.


It’s fair to say Ashwagandha definitely deserves a place in your daily supplement routine. It brings some excellent benefits to the table including the reduction of stress and anxiety, improved physical performance in the gym, and a better focus and concentration on boring daily tasks.

Although this interesting Indian herb had been scientifically proven to be safe it is always good to know the side effects that can come with it. Taking the correct daily dose will ensure you feel the full effects of the capsules without running the risk of experiencing any nasty side effects like an upset stomach or headaches.

Buying only the best product on the market will ensure you feel the maximum benefit from Ashwagandha so make sure you buy one of the supplements from this guide.

Now you have all the information you need about Ashwagandha supplements it is over to you. Pick the best supplements for you and give them a try to see what effects you feel. In just a couple of weeks, you could find yourself feeling so much better than you ever felt before.