Ashwagandha and l-theanine are two herbs that are often compared because of their similar calming effects.
However, there are also some key differences between these supplements that you should be aware of before choosing one over the other.
In this article, we’ll dig into the differences between ashwagandha vs. l-theanine, as well as their similarities.

Table of Contents
- Ashwagandha vs. L-Theanine: Similarities & Differences Explained
- Ashwagandha vs. L-Theanine: Which is right for you?
- Can You Take L-Theanine and Ashwagandha Together?
- The Best Ashwagandha & L-Theanine Supplements:
- Ashwagandha Overview & Uses:
- L-Theanine Overview & Uses:
- Potential Side Effects & Interactions:
- Conclusion:
Ashwagandha vs. L-Theanine: Similarities & Differences Explained
When it comes to comparing these two supplements, there are many similarities between ashwagandha and l theanine.
Both ashwagandha and l-theanine help to promote healthy brain function, sleep, stress levels, and overall mood.
The key difference between the two is that ashwagandha is an adaptogenic herb with anti-stress properties while l-theanine works by relaxing the brain.
Both l-theanine and ashwagandha have been used in traditional medicine systems. Ashwagandha is highly used within the Ayurvedic system of medicine, while l-theanine (in the form of green tea) has been used in Asian cuisine and medicine for thousands of years.
| Ashwagandha Overview: | L-Theanine Overview: | |
| Primary Benefit: | Ashwagandha may reduce elevated stress levels | L-Theanine shows evidence of lowering stress |
| Secondary Benefit(s): | Ashwagandha is thought to increase sleep quality | L-Theanine may benefit brain function and cognition |
| Part of the Plant Used: | Root | L-Theanine is a naturally-occurring amino acid |
| Dosage Range: | 300-1,000mg | 200-400mg |
| Form: | Extract, powder, or capsule | Powder or capsule |
| Side Effects: | Excessive use may cause stomach upset, diarrhea, or vomiting | Large doses may cause appetite loss, diarrhea, or headaches |
| Recommended Products: | Gaia Herbs | Check Price | Thorne | Check Price |
Ashwagandha vs. L-Theanine: Which is right for you?
When comparing ashwagandha vs l theanine, there are a few things to keep in mind.
Think of ashwagandha as an anti-stress herb that builds resilience within the body. It also has the ability to support increased sleep quality.
Whereas l-theanine has the ability to increase relaxation and focus in the brain is its main benefit. It also has an anxiolytic benefit, but this is more of a secondary function.
These properties make L-theanine a great addition as a nighttime sleep aid.
We recommend checking out Stay Asleep, a natural sleep aid that contains l-theanine along with a complement of natural herbs.
If you are stressed out and need support in your ability to adapt to stress, then ashwagandha root is the best option. Its sleep-supporting properties are icing on the cake.
If you feel mentally sluggish or overwhelmed, then l-theanine might be right for you. It has a calming, brain-focusing effect that is beneficial for many, especially office workers. It’s also great to take before bed to help wind down.
Can You Take L-Theanine and Ashwagandha Together?
Yes, you can take l-theanine and ashwagandha together.
These supplements do not have any known negative interactions when taken together.
In fact, these herbs may be a good combination to help increase sleep quality at night and stimulate cognitive function during the day.
It would be best to take l-theanine in the morning or afternoon and then take ashwagandha later at night (prior to bedtime).
The Best Ashwagandha & L-Theanine Supplements:
When it comes to supplementing with ashwagandha or theanine, we have a handful of recommendations for the best herb suppliers.
For ashwagandha, we recommend Gaia Herb’s ashwagandha formula. Gaia Herbs is one of the best herbal suppliers and is known for the quality and purity of their products. This supplement contains certified organic ashwagandha, which ensures that you are getting a pure, potent herbal formula. You can click here to read more about our top recommended ashwagandha supplements.
For L-theanine supplements, we recommend checking out Thorne’s theanine formula. It contains 200mg of L-theanine in one capsule. This is the perfect amount for daily stress support.
Thorne has been selling high-quality supplements for decades. They have their own manufacturing facilities which are cGMP, NSF, and TGA-approved –– All markers of product purity and safety.
If you are looking for a combination ashwagandha and theanine supplement, we haven’t come across a formula that meets our specs. At this time, it’s best to order separate supplements and then take them together.
| Recommended Ashwagandha | Recommended L-Theanine |
|---|---|
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| Gaia Herbs | Thorne |
| •Organic, Vegan, and Gluten-Free •Ecologically Harvested in Siberia •Concentrated Dosage | •Free of Major Allergens •3rd Party Certified •Manufactured in the USA |
| SHOP NOW ⮕ | SHOP NOW ⮕ |


