New to kava, or to a particular type of kava product, and not sure how much kava to take? A drink made from traditional root powder, a scoop of instant kava, a canned kava beverage, and kava extract powders can all deliver very different amounts of kava’s active compounds.
That’s why it’s important not to simply ask, “how much kava should I drink?” but instead ask:
- What kind of kava am I drinking?
- How many kavalactones are in one serving?
- What context will I be consuming my kava in?
Table of Contents
- How Much Kava Should I Drink? The Quick Answer
- How Much Kava Should I Drink? The Longer Answer
- More Info & Factors to Consider
- Kava Serving Size FAQs
How Much Kava Should I Drink? The Quick Answer
Kavalactones are the active compounds in kava. The kavalactones in 1 tsp of a kava root powder ≠ kavalactones in 1 tsp of kava extract ≠ kavalactones in 1 tsp instant kava.
- Start by checking the amount of kavalactones per serving to determine how much to consume.
- We recommend aiming for somewhere between 100 and 150 mg kavalactones per serving, but many products have a recommended serving size that’s outside of this range.
→ Don’t just automatically use the product’s recommended serving size. If you’re new to kava (or trying a new product type), the recommended serving might be too much or too little for you (due to kava’s reverse tolerance—more about this in the FAQs below).
How Much Kava Should I Drink? The Longer Answer
To figure out how much kava to take, first consider the following tips.
Essential Tips for Finding Your Kava Serving Size
- Check the label to determine the right amount to take.
- Some products combine kava with other active ingredients like caffeine or kratom alkaloids. With a combination of actives, you may not need as many kavalactones to achieve your desired effect, so use these with caution.
- Start with a small amount.
- Ensure you tolerate the kava product well before you have more.
- Space out your servings.
- Avoid stacking multiple servings quickly just because you don’t feel something right away.
- Think about context.
- Consider the time of day, if you’ve eaten recently, if you’ve taken any medications or other supplements, etc…
- Do not combine kava with alcohol, benzodiazepines, sedatives, or other substances with sedating effects. Federal health agencies specifically warn against combining kava with alcohol or sedating substances.
- Kava may feel stronger and the effects may come on faster if you drink it on an empty stomach.
- Talk to a healthcare provider before using kava.
- This is especially important if you take medications, have liver concerns, are pregnant, or are breastfeeding.
Read through the table above to get a better understand of how “one serving” differs between product types.
Important Factors to Consider to Figure Out How Much Kava to Take
In the kava serving size chart above, there are a lot of number ranges and “it depends” comments. Let’s go over why there is vagueness in kava serving sizes.
In addition to the quick kava serving size tips above, knowing the following info will make it much easier to assess a kava product and determine how much of it to take/drink.
1. Kavalactone Content Varies from Plant to Plant
Just as the amount of caffeine in each batch of coffee beans can vary, the amount of kavalactones in kava plants can differ. Plus, different parts of the kava plant have different amounts of kavalactones:
- Dried roots are made up of 7.2–14.1% kavalactones
- Rhizomes contain 4.7–8.2% kavalactones
- Stems and leaves contain 0-5% kavalactones
Q: Do kava leaves contain any kavalactones?
Stems closer to the roots may have roughly 5% kavalactones. Moving farther away from the roots, the kavalactone content continues to drop. So most commercial products are made with the roots and rhizomes.
Some combination gray-market products, like Za Za Red and Pegasus, claim to contain kava leaves (another term for kava is “yagona” and this is what some products list on their labels).
Za Za Red has been tested by an independent lab and was found to have no kavalactones in it.
2. Each Kava Formulation Has a Different Strength
People take kava plants and process them into a range of other products, like instant kava, kava tea bags, canned kava beverages, etc.
- Some of these products are targeted towards kava newbies, while others are made for more experienced consumers.
- A company gets to choose what “one serving” is. It isn’t consistent between brands or between one brand’s range of products. Some companies may intentionally set a recommended serving size that has a lot more active compounds than the average.
That’s why we recommend checking the kavalactone content per serving.
If the product doesn’t list the kavalactone content, ask to see the results of the product’s third-party lab testing.
→ If you can’t find the kavalactone content listed on the product label and the company won’t provide that information when asked, that’s a red flag. 🚩
But for these products, as a last resort, you can potentially determine how much kava to take based on the product formulation. Here are the most common kava product types and what their common serving sizes are:
Traditional Medium-Grind Kava Root
Traditional kava is usually prepared by kneading or straining kava root powder in water.
Many kava shops prepare a single drink using a relatively large amount of root. Depending on the batch, cultivar, and house recipe, that might be somewhere around 30 to 50 grams of root strained into water.
That does not automatically mean every traditional kava drink contains the same amount of kavalactones. Why?
- Different batches of root powder can vary dramatically in potency. One batch may be mild, another may be much stronger.
- Even when using the same batch of kava root, the final drink can vary. Steeping time, water temperature, kneading technique, and straining can all affect how many kavalactones end up in each serving.
Instant Kava
Usually, instant kava refers to kava that manufacturers prepare as a beverage, then dehydrate into a powder (like instant coffee). You can mix it directly into water or another drink without kneading, steeping, or straining.
Tip: Some products labeled “instant kava” are actually micronized kava or another type of kava powder (because instant kava tends to be more popular and sells better). Before choosing your serving size, confirm whether your product is true instant kava or a finely ground root powder.
Before using instant kava, check:
- Whether it lists kavalactones per serving
- How much powder equals one serving
- Whether it is true instant or micronized root
- Whether the label provides a clear serving recommendation.
Micronized Kava
Micronized kava is kava root that’s ground into a very fine powder.
Unlike the more traditional medium-grind kava, you can mix micronized kava directly into liquid and consume it without straining.
Because you’ll be swallowing more of the plant material, micronized kava can feel different on the stomach than kava root drinks that have been strained (or instant kava).
Tip: Some companies market micronized kava as “instant” to make it more attractive to customers, so check if it’s actually instant kava or not before choosing your serving size.
Standardized Kava Extract
The kavalactone content of standardized extracts is very easy to calculate because they are made to contain a specific percentage of kavalactones.*
- Ex: Top Tree’s kava extract is standardized to 30% kavalactones.
- That means 100 mg of extract contains 30 mg of kavalactones.
- One recommended serving is 500 mg of the powder, and that contains 150 mg of kavalactones.
The most common standardized extracts you’ll find contain either 30% kavalactones or 70% kavalactones.
A single serving of an extract is a very small amount of powder (usually ⅛–¼ tsp, depending upon the strength). If you want to be super precise with your measurements, use a milligram-sensitive scale instead of measuring spoons.
* Some products that use a standardized extract don’t actually list the percentage, which makes knowing the kavalactone content impossible. More on how to manage products like this in the next section on “proprietary kava extracts.”
Canned Kava Drinks and Shots/Tonics
Ready-to-drink kava products vary a lot. A single can of kava seltzer, bottled kava drink, botanical tonic, or kava shot may contain anywhere from a small amount of kavalactones to several large servings.
Before having a kava drink or tonic:
- Check how many servings are in the container. A bottle or canned drink may look like a single serving but could actually contain two servings (or more).
- Some drinks list the amount of kavalactones per serving on the label, but some intentionally make it unclear. The next section about “proprietary kava extracts” has more info on how to assess the strength of these products.
- Check if there are any other active ingredients in addition to the kava. Many brands make drinks that mix kava with kratom, caffeine, or other active ingredients. These additions can make the kava feel stronger or change the overall experience.
For a kava drink that has multiple active ingredients, it’s often best to start with less than you would if you were drinking kava by itself.
3. Beware of Products Containing “Proprietary Kava Extracts” with an Unlisted Kavalactone Content
Be especially careful with products that contain a “proprietary blend” or extract products with an unspecified concentration. By just looking at the label of these products, you often won’t be able to know the strength.
For example, one popular kava drink company called Leilo makes canned drinks with 1000 mg of a “Proprietary Kava Root Extract Blend” per serving. It’s entirely unclear what strength the extract is.
- If it’s a 10% extract, 1000 mg would contains 100 mg kavalactones
- If it’s a 30% extract, 1000 mg would contains 300 mg kavalactones
- Or if it’s a 70% extract, 1000 mg would contains 700 mg kavalactones
Just because there’s a lact of clarity on the kavalactone content doesn’t mean you need to avoid products like this entirely. If product strength is unclear, consider calling the brand/manufacturer to ask them about the strength.
4. Factors Other than Serving Size Can Influence How Kava Feels
Context matters a lot when taking dietary supplements like kava. Consider factors like these:
- How much food is in your stomach
- How recently you ate
- How much sleep you got
- Your body size
- Individual sensitivity
- Medications you’re taking
- Other supplements or substances you’ve had
- How quickly you drink it
- Whether you are new to kava or more experienced
- How frequently you use kava
Food: Typically, kava will feel more noticeable if you have it with a relatively empty stomach. But you may prefer having a small amount of food first because kava can occasionally cause stomach discomfort.
Frequency: If you stack multiple servings close together, and you consume kava on a regular basis, you may feel it more strongly and accustom yourself to it more quickly.
Medications & Supplements: Make sure to speak with a medical professional before taking kava. It’s essential to confirm that it won’t have problematic interactions with medications or supplements you’re taking.
Kava Serving Size FAQs
1. What is “reverse tolerance”?
Regular tolerance is a condition where the body adapts to repeated exposure to a substance, resulting in a diminished response to a particular amount over time.
In contrast, reverse tolerance (also called “sensitization”) is a phenomenon where repeated, consistent use of a substance leads to an increased effect rather than decreased effect.
So when kava drinkers talk about a reverse tolerance, they mean that kava may feel more noticeable after several sessions than it did the first time they tried it. Additionally, some people say they need less kava over time to notice the same general effect.
Scientifically, this phenomenon isn’t fully understood. It may be better described as familiarity or sensitization rather than a proven pharmacological rule.
TLDR for kava newcomers:
The first time you try kava, you might not fully know what to look for, and you might not notice any effects from a standard serving. It may take a few consistent sessions to learn how kava feels and if it works for you.
2. What if I don’t feel anything?
If you tried kava and didn’t feel anything, you may need to increase the amount you tried. But don’t immediately take another serving or a larger serving. First, consider:
- Did you take the kava with a heavy meal?
- Did the product list kavalactone content?
- Did you drink it slowly or quickly?
- Are you new to kava? Have you built up a “reverse tolerance” yet?
Depending on how you answer some of these questions, you may want to change the context you consumed your kava in first, rather than just upping the serving size.
3. Should I take kava with food?
If you have kava right after eating a big meal, you typically won’t notice the kava’s effects as strongly. So here’s our recommendation:
- Avoid taking kava immediately after a very heavy meal.
- Avoid taking it on a completely empty stomach if it’s your first time trying kava, or if you know this makes you nauseous.
- Extra Tip: You can make non-alcoholic mixed drinks and smoothies with kava. Combining kava with a drink like coconut milk can help with absorption and prevent nausea.
4. Can I mix kava with alcohol?
We do not recommend mixing kava with alcohol.
NCCIH warns that kava should not be used with alcohol or other substances that have sedative effects.
This is especially important because both kava and alcohol can raise safety concerns around sedation, coordination, judgment, and liver stress.
5. Can I take kava with medications?
The answer isn’t a flat no. But if you take medication, talk with a healthcare provider before using kava.
This is especially important if you’re taking medications that affect sleep, anxiety, mood, the liver, coordination, or sedation.
6. Can I drive after drinking kava?
Do not drive or operate machinery until you know how kava affects you. Kava may cause drowsiness, dizziness, or changes in coordination for some people.
Use caution and common sense with kava just as you would with alcoholic drinks, cannabis, and anything else relaxing or sedating.
Final Notes on How Much Kava to Take
When figuring out how much kava you should drink, we recommend starting low and going slow.
Once you confirm that you don’t have a sensitivity or negative reaction to a small amount, you can then adjust the serving size, number of servings you consume, and the frequency.
- Think about context: There will be a lot of factors at play regarding how much kava you need to drink to feel anything.
- These include food, sleep, medications, other substances, body size, sex, and individual sensitivity. In short, everyone is different, so don’t assume the amount of kava you should drink is the exact same as someone else.
- Product strength varies widely, so determine the kavalactone content: Learn how to assess a kava product label and determine the kavalactone content.
- If the product doesn’t list the kavalactone content or the extract strength, contact the company to figure out its strength before trying it.
- If you’re new, start small: When figuring out how much kava you should drink, we recommend starting low and going slow.
- Begin with a single serving, or even a half if you want to be especially cautious.
- Make the experience fun! If you don’t like the flavor of traditional kava root powder or extract, check out our kava recipes to dress it up and make it actually enjoyable to drink.
*These statements have not been evaluated by the Food and Drug Administration. Kava products are not intended to diagnose, treat, cure or prevent any disease. The information in this guide should not be taken as medical advice.
