Table of Contents
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Kratom (Mitragyna speciosa) is the leaf of a tropical deciduous tree within the coffee family (Rubiaceae) native to Southeast Asia.
Kratom has been safely used as a dietary and nootropic supplement, and natural remedy in Southeast Asia for centuries.
Typically consumed in small quantities by chewing fresh or dried leaves, as a steeped tea, or powdered and washed down with a drink. Kratom was used throughout their workday for energy and pain relief.[i]
As a nootropic supplement, Kratom continues to be used to improve mood, as an anxiolytic, for insomnia, pain relief, more energy, as an anti-inflammatory, and to lower blood sugar.[ii]
Here we’ll explore how Kratom benefits your brain.
Kratom helps:
- Pain: The compounds mitragynine and 7-hydroxymitragynine are agonists of mu (μ) -, delta (δ) –, and kappa (κ) opioid receptors. Resulting in relief from pain.[iii]
- Anxiolytic: Kratom affects serotonin and norepinephrine pathways in the central nervous system providing relief from anxiety and depression.[iv]
- Energy: Kratom affects dopamine D1 receptors which helps boost energy.[v]
Overview
Kratom (Mitragyna speciosa) is the leaf of a 4 – 16-meter-high tree indigenous to South East Asia, the Philippines and New Guinea.
Kratom is of the Rubiaceae family of flowering plants which includes the coffee plant.
The genus was given its Mitragyna name by the Dutch botanist Pieter Korthals in 1839 because the leaves and the stigmas of the flowers of the plant resemble the shape of a bishop’s mitre.
Other names of the plant are krathom, kakuam, ithang or thom (Thailand), biak-biak or ketum (Malaysia), and mambog (Philippines).
Kratom as a nootropic supplement is the leaves of the Mitragyna speciosa tree and are either greenish/white or red in color. Typically supplied as crushed or powdered dried leaves that vary in color from light to dark green and some variants have a reddish tinge.
Mitragynine and 7-hydroxymitragynine (7-HMG), unique to Mitragyna speciosa, are the two alkaloids mainly responsible for the effects of Kratom. And are agonists of the μ-subtype opioid receptor (MOR).[vi]
5-HT2a (subtype of serotonin receptor) and postsynaptic α2–adrenergic receptors, as well as neuronal Ca2+ channels are also involved in the unique mechanism of action of mitragynine.
Kratom has been traditionally used as fresh or dried leaves that are chewed or steeped into tea.
At lower dosages, Kratom is used for its stimulant effects and is used to combat fatigue.
At higher dosages, Kratom can have more of a sedative and anxiolytic effect. And has also been used in traditional and natural medicine as an alternative to opiate medications.
Currently, Mitragyna speciosa is legal to buy in most European countries and in most states in the USA.
But some EU countries, such as Denmark, Latvia, Lithuania, Poland, Romania, and Sweden, Mitragyna speciosa and/or mitragynine and 7-HMG are controlled drugs.
Kratom is listed as a controlled substance in Australia, Malaysia, Myanmar, and Thailand (which has legalized the use of Kratom and cannabis plants for medicinal use on December 2018).
In New Zealand, Mitragyna speciosa and mitragynine are controlled under the Medicines Amendment Regulations. In the USA, Kratom is not controlled on a federal level though considered as a ‘drug of concern’.[vii]
Kratom is a potent option for its pain-relieving qualities and as a neuro-stimulant.[viii] And its legal use will continue to be debated.
With ordinary people pressing for maintaining its availability as a supplement. While pharmaceuticals and mainstream medicine fight to have it scheduled as a restricted substance.
How does Kratom work in the brain?
Kratom boosts brain health and function in several ways. But two in particular stand out.
- Kratom helps reduce pain. Kratom has traditionally been used to treat various types of diseases especially in Thailand and Malaysia. Its anti-inflammatory and analgesic properties in its crude form are well documented.
Research shows that mitragynine, the major alkaloid compound found in young leaves of Mitragyna speciosa affects the norepinephrine and serotonin pathways in the brain. Contributing to its pain-relief qualities.[ix]
Studies also show that mitragynine significantly inhibits mRNA expression of COX-1 and COX-2, and the production of prostaglandin E2 (PGE2). Meaning Kratom “may be useful for the treatment of inflammatory conditions.”[x]
- Kratom is an anxiolytic and antidepressant. Kratom users often speak of Kratom’s ability to lift mood and tame anxiety soon after taking it. And researchers have confirmed its anti-anxiety and antidepressant qualities in several animal studies.
Researchers in Malaysia treated Sprague-Dawley rats with 10, 20 and 40 mg/kg of mitragynine or 10 mg/kg of the benzodiazepine diazepam 60 minutes before testing. The Kratom dosage was selected based on human equivalent doses from previous reports.
The study revealed that mitragynine produced anxiolytic effects similar to diazepam. Which was attributed to interactions among opioid, GABA and dopamine regions of the brain.[xi]
Another Malaysian study evaluated the antidepressant effect of mitragynine in mice. The mice received 10 mg/kg and 30 mg/kg of mitragynine.
The researchers said, “mitragynine exerts an antidepressant effect” in mice. And the effect appeared to be mediated by an interaction with the neuroendocrine HPA axis system.[xii]
Mitragynine is the main alkaloid in Kratom.
How things go bad
Seems just being human guarantees each of us will need to deal with anxiety, depression and pain at some point in our lives.
And if left unchecked can result in:
↑ Chronic inflammation
↑ Accelerated aging
↑ High blood pressure
↑ Increased pain
↑ Anxiety and/or depression
If you choose to be treated with prescription drugs, it could result in side effects like decreased alertness, brain fog, slower thinking, poor memory and possible decline in mood.
Kratom benefits
Neurohackers report using Kratom to alleviate chronic pain, as an antidepressant and anti-anxiety supplement, for energy at lower dosages, and for sleep at higher dosages.
Kratom has also helped thousands to withdraw from opiates. Because the compounds mitragynine and 7-hydroxymitragynine bind to same opiate receptors as prescription pain meds. But without the danger of respiratory failure.
Christopher McCurdy at the University of Mississippi National Center for Natural Products Research used mouse models for Kratom research.
In one study, McCurdy’s team gave mice two doses of morphine daily for 5 days. Doubling it each day until the mice were addicted to morphine.
The control group then received naloxone which is used to reverse heroin overdose. And subsequently went through the physical symptoms of opiate withdrawal.
The other group of mice received freeze-dried Kratom tea daily for 5 days. The animals displayed a significant reduction in withdrawal side effects.
The scientists then repeated the test with extracts of pure mitragynine in place of Kratom tea. Which caused the residual withdrawal side effects of opiate withdrawal to vanish completely.[xiii]
How does Kratom feel?
You feel the affects of Kratom within 30 minutes of your first dose.
A 2017 Grundman survey of 10,000 Kratom users aged 31 – 50 years, the majority having used Kratom from 6 months to 5 years, reported the following benefits:
- increased energy
- decreased pain
- increased focus
- less depressed mood
- less anxious mood
- reduced or stopped use of opioid painkillers
- reduced PTSD symptoms
- elevated mood
99.35% of survey respondents answered “no” to the question asking if “medical or mental health care treatment was needed because of Kratom consumption?”
20.93% of respondents reported the only negative effects of using Kratom was nausea or constipation.[xiv]
The Pain News Network conducted a survey of over 6,400 Kratom users in 2017. Survey respondents reported the most common reason for using Kratom was pain management.
Followed by using Kratom for anxiety, opioid addiction or dependence, and depression. The majority reported that they didn’t think Kratom was harmful. And the majority said they could NOT get a high from using Kratom.[xv]
Kratom Clinical Research
Kratom helps control pain
Mu-opioid receptor agonists are the mainstays of pain management. But the therapeutic use of these drugs is associated with serious side effects, including potentially lethal respiratory depression.
So, there is an ongoing search for new opioid analgesics which are safer.
Kratom is an unusual class of opioid receptor modulator with a distinct mechanism of action.
Researchers found that mitragynine and the oxidized analogue 7-hydroxymitragynine found in Kratom, are partial agonists of the human mu-opioid receptor and competitive antagonists at the kappa- and delta-opioid receptors.
But mitragynine and 7-hydroxymitragynine are also G-protein-biased agonists of the mu-opioid receptor, which do not recruit β-arrestin following receptor activation.
Which means that Kratom provides the pain relief associated with prescription opioid medication. But without the potentially lethal side effect of respiratory depression.[xvi]
Kratom as an anti-depressant
Many neurohackers report that Kratom is effective in relieving their anxiety and depression.
And a 2018 study confirmed these findings in a systematic review of all studies on Kratom use and mental health published between January 1960 and July 2017.
Participants in these studies confirmed that Kratom enhanced their mood and reduced anxiety symptoms. The study authors noted that Kratom also has potential as an opioid substitute for people addicted to opioids.[xvii]
Kratom for withdrawal from opiate addiction
Surveys of regular Kratom users often report its primary use is to help people quit opiates and avoid withdrawal symptoms. And research in animals support what neurohackers report.
Researchers at Prince of Songkla University in Thailand investigated the effects of Kratom extract on morphine withdrawal in mice.
Male Swiss Albino mice were given morphine until they were dependent on it. The mice were then given injections of naloxone, an opioid agonist, to induce morphine withdrawal symptoms.
The mice were tested then given Mitragyna speciosa extract and tested again. The Kratom extract significantly reduced the severity of morphine withdrawal symptoms.
And the researchers concluded, “treatment with the M. speciosa alkaloid extract may be useful for opiate addiction treatment program.”[xviii]
Kratom Recommended Dosage
Dosage of Kratom is key when your goal are specific effects. Dose too low, and you’ll get no benefit. But dose too high and you’ll experience relatively harmless, but usually unpleasant side effects like diarrhea, the sweats, or even vomiting.
And Kratom has a short half-life, so you need to dose it several times a day to keep stable levels in your system.
Recommended dosage of Kratom is:
- Mild effects – 1 – 2 grams
- Moderate effects – 2 – 5 grams
- High effects – 6 – 15 grams
Note that potency can vary a lot between different strains of Kratom. And even which area Kratom is harvested. There is no ‘standardized’ dosage. Instead dosage is based on experience and user reports.
Typically, lower dosages are more stimulating and higher dosages more sedating.
But every Kratom strain has a general, optimal dose for its therapeutic value, and for its ‘feel-good’ effects. Anything above this ideal dosage can have unpleasant effects.
And most people find that Kratom works more effectively when consumed on an empty stomach. Taken with a meal could nullify or dramatically reduce its effects.
The traditional method of using Kratom in Southeast Asia was using fresh leaves, removing stems and veins, bundling the leaves, and chewing the leaves.
The “toss ‘n’ wash” method of dosing Kratom is chasing the powder with water. Not recommended.
Kratom tea is a common method of using it. Simmer powdered Kratom in water for 20 minutes and drink the tea. Easier to drink, but if you strain out the soggy Kratom powder before drinking, you’ll lose some of the valuable, medicinal value of the plant.
Adding lemon juice to your Kratom tea can increase the bioavailability of its alkaloid content.
You can also mix measured Kratom powder with yogurt, applesauce, juice, peanut butter or chocolate milk.
My preferred method is making capsules of Kratom powder. It’s convenient, eliminates the unpleasant taste, and provides the desired therapeutic benefit within 20 minutes of swallowing the capsules.
You can help avoid Kratom tolerance by supplementing with magnesium because this mineral is a NMDA receptor antagonist.[xix]
Kratom Side Effects
The most common side effects associated with Kratom use is nausea and constipation. But others may include muscle tremors, itching, sweating, dizziness, and dry mouth.
There have been unsubstantiated reports that Kratom could cause seizure and hallucinations in some people.
Abruptly stopping long-term Kratom use could result in withdrawal symptoms including insomnia, diarrhea and fever. Some neurohackers have reported feeling nervous, tense, angry or sad when stopping Kratom.[xx]
The American FDA has reported some deaths among Kratom users. But none have been substantiated. In fact, The New England Journal of Medicine did a systematic review of 15 kratom-related deaths.
And the researchers concluded none of the deaths were caused by Kratom. But that there is an “increased risk of adverse events” when Kratom is ingested with opioids or psychoactive drugs.[xxi]
Studies with animals show that Kratom even at dosages of 1,000 mg/kg daily for 14 days will not cause death.[xxii] But did produce severe liver damage and minor kidney damage. That’s the equivalent daily dosage of 72 grams in a 160 lb. (72 kg) human.
If you are dealing with liver or kidney problems, use caution when using Kratom. Particularly at higher dosages.
If you are pregnant or intend on becoming pregnant you should avoid using Kratom.
Those who have problems with addiction to alcohol and other drugs are at increased risk of abusing Kratom.
And Kratom may worsen existing mental disorders. So if you are dealing with clinical depression, suicidal thoughts or other neurological disorder, and especially if you are using anti-anxiety or antidepressant medication for these disorders, you should not use Kratom.
Types and where to buy Kratom
Kratom is sold as capsules, tablets, powder, concentrated extract, gum or raw leaves.
Leaf alkaloid content varies from plant to plant, and from strain to strain. The most popular strains for pain relief both red and green veined versions are:
- Bali
- Borneo
- Indo
- Maeng Da
Red vein versions of the above Kratom strains tend to be more reliable for pain relief. And the general consensus is that Maeng Da is most potent of all.
Most strains of Kratom can help depression and anxiety. But differences in strain can change the type of experience you’ll have.
In general, the following red and green strains will help lift mood at higher dosages. And lower dosages of the same strains may be somewhat stimulating.
- Bali
- Borneo
- Indo
You can also buy water-based extracts of Kratom. These extracts have more alkaloid content than regular Kratom. One option is adding some extract to regular Kratom to potentiate its pain-relieving effects.
Kratom resin extracts are made using a solvent to extract the alkaloids which is then left to dry. You get the full spectrum of effects of regular Kratom at much smaller dosages of resin.
Adulteration of Kratom is an ongoing problem and you must use caution when selecting your Kratom vendor. Because anything other than pure, dried Kratom leaves or a verified extract can cause severe side effects.
Researchers at the School of Pharmacy at the University of Massachusetts purchased several commercially available Kratom products for analysis. And found multiple Kratom products to have substantially higher concentrations (109–520%) of 7-hydroxymitragynine than those found in raw Kratom leaves.
The problem is that 7-hydroxymitragynine, a potent mu-opioid receptor agonist, is likely to be a major contributing factor to the addictive potential of Kratom.[xxiii]
Buying ready-made capsules of Kratom is not only more expensive, but riskier because unless you are buying from a fully vetted vendor, you can’t be sure what’s in the capsule.
I highly recommend avoiding capsules from the corner shop. And buying Kratom powder from a company you trust.
My personal recommendation is a company based in the USA, and one of the only companies I’m aware of who do third-party testing on all their product and follow Good Manufacturing Practices (GMP) – Super Speciosa.
Super Speciosa offers several different strains of Kratom, and tests all their product for purity, yeast and mold, bacteria, pesticides and heavy metals. And are members of the American Kratom Association.
You can check out the Super Speciosa line of products here: Super Speciosa.
Nootropics Expert Recommendation
I recommend using Kratom as a nootropic supplement.
Your body does not make Kratom on its own. So to get its benefits you must take it as a supplement.
Kratom is especially helpful for those dealing with chronic pain, and fatigue.
Kratom is a powerful nootropic supplement. It may help you avoid or even get off opioids you’ve been on for years. With fewer withdrawal symptoms.
Kratom at lower dosages can provide a gentle stimulant effect. And at higher dosages can help you deal better with anxiety and depression.
Some find Kratom especially helpful for insomnia. And not needing to rely on problematic prescription sleep aids.
You can safely take up to 15 grams of Kratom daily if needed. But dosed 5 grams at a time and preferably before you eat.
You can help prevent tolerance by taking Kratom with magnesium because this mineral helps block receptors associated with tolerance.
I highly recommend choosing your Kratom vendor or supplier wisely. I’ve tried and recommend Super Speciosa and know their product is pure.
Join The Discussion - 91 comments
David
October 20, 2024
Hi David, I’m writing to let you know that you might want to reconsider linking to Organa Kratom. I know you yourself are legit, and I have purchased from Organa several times in the past based on your recommendation and they were fine. However, I think they are now in some kind of exit scam. I recently order a large amount of kratom from them, and they never sent it. They have not even responded to several email about this. I am now going to have to contact my credit card company about the charge on my card. This has never happened to me, ever, buying kratom online from numerous venders for the last 5 or 10 years.. Anyway, I know you are legit, but Organa is obviously not, so please reconsider recommending them. Thanks, as always, for the great website.
David Tomen
October 20, 2024
David I appreciate the heads up and will look into it today. I do have other options available and will update my recommendations. Thanks.
Scott Sessoms
July 2, 2024
Hi David. Please consider revisiting your Kratom info. I apologise b/c think I’ve already commented on my years of experience/learning (long time leafer : ) Anyways your post says “multie daily doses…up ton15g/day”. Note I’m pro-kratom (big-time) but from yrs of exp and talking with others. Daily use with large doses destroys most people (including almost me).
Upon stepping back I now realize 2-3g is nice mound of leaf powder and very healthy stout dose! One nice session only (few days/week) – golden…healthy…feel good this not “intoxicated”.
Sadly people jump into huge 6gram doses …worsely multi-tumes/day. This.level was toxic to me (physical n mental) and made me crave it next day or I’d feel awlful. Anywho. Same for so many others I know! I’ve spent hours upon hours (ha way too.much) on Kr readings.
Anyways just a whole nutha animal at med 2-3g dose vs. like 10-12 grams every day. Cool part is the mood/energy burst actually stalls/decreases once above 3-ish grams. But Kr gets lots of hate! But that’s from. Ppl doing large amounts (see Quit Kratom reddit for proof). Kratom leaf can be such a healthful energizing plant, sadly the majority are doing way too much. To the point of my home state in NC voting to ban it in next week or so. This really miffs me!
Thanks for listening! Fyi my comments don’t apply to those with chronic pain choosing this over pain Rx. Tho even if I end up needing for that, I’ll.attempt to cycle with other (if possible)- Kratom tolerance is notorious. THANKS!
David Tomen
July 6, 2024
Scott, I agree with you 100%. Notice that my recommendation is: Kratom 1 – 15 grams per day. That is starting at 1 gram per day. The higher dose is for someone who wants to replace oxycodone for pain relief.
Robert Sessoms
May 24, 2024
Please consider revisiting this info. When I started 6yrs ago many websites said said 5g good dose & ok multiple times/day. I developed tolerance & shot up to 13g/day causing major issues… ruined me for 2yrs. (others I know went thru similar).
NOW, I use 3g. & it’s incredible! Unless chronic pain, never use multiple times/day. Also if seeking mood/energy “less is more” literally. Plant also includes ANTAGONIST , so above 2-3g the feel-goods actually decrease. I’ve used & studied kratom for years & am growing my own trees. There is whole Quitting Kratom sub-reddit for those addicted – the common theme is they dosed all day long (& up to 15g or more/day). I just want to spread the word b/c this can be magical plant medicine IF dosed correctly & nightmare if not – true for most everything I suppose.
Russell Baker
November 19, 2023
I found tolerance in as little as 30 days and felt jittery and fatigue after commi g off
Black seed oil took yhat all away and you could at least half your dosages with it. Takes like gasoline
Agmatine is a better nmda antagonist for reduced tolerance as well
Some not others will get tolerance to it quickly whilst others can take it for years. I would never go doses anywhere near 15g daily personally. That when people get into trouble.
1.5g a day is enough for me with black seed oil twice a day, but I am going to take a long break. But then I don’t find phenibut addictive (well a little) so we are all different
David Tomen
November 19, 2023
Russell, thanks for bringing up Black Seed Oil because most don’t know that even detoxing from opiates is easier when using Black Seed Oil.
John
September 18, 2023
First in the headlines you wrote “The compounds mitragynine and 7-hydroxymitragynine are agonists of mu (μ) -, delta (δ) –, and kappa (κ) opioid receptors. Resulting in relief from pain.” but then they wrote this below: Researchers found that mitragynine and the oxidized analogue 7-hydroxymitragynine found in Kratom, are partial agonists of the human mu-opioid receptor and competitive antagonists at the kappa- and delta-opioid receptors. Where is the truth?
David Tomen
September 22, 2023
John, it is explained in detail under the above subhead, “Kratom helps control pain“.
Tony
June 18, 2023
Hi David
How much Magnesium should one take to help reduce or prevent tolerance from Kratom? Also, what kind of magnesium?
I take 15grams of Kratom but not sure how to take it so i take it like after work 3 grams every 2 hours till i go and sleep.
I get WD after 2 hours and i take it like that cause i don’t want to have it in my system while driving cause it feels like i hit’s me harder during the day. Might be a placebo effect but don’t think i should be driving after 15 grams so i don’t know hoiw to take it.
Any suggestions??
David Tomen
June 21, 2023
Tony, the study that I pointed to used magnesium sulfate but it was done by IV along with morphine in rats. That form of IV administered magnesium prevented morphine tolerance. I do not have any studies showing the same in humans and with Kratom.
There is no establish dosage for Kratom. But 15 grams is the very highest on that scale. At that level I highly doubt there is anything you can do to reduce tolerance. BTW, it is NOT a placebo effect and no, you should not be driving after taking 15 grams of Kratom.
James Betz
June 4, 2023
David: I am a 77 year old Veit Nam Vet, and 26 years as a clandestine operative for this country. Ten years ago I had intestinal cancer due to agent Orange and after a very active life I was really down. Well I beat the cancer but my PTSD got worse. I have lifted weights most of my life and did not have the motivation after the cancer. Four years ago I was introduced to Kratom. I use it daily 3 lite doses a day. No PTSD, and it got me back in the gym. I now do a 225 pound bench press and do a 90 minute workout 3 times a week. I researched Kratom and was very careful about lab testing and Vendor history. Thank you for this site, I am sure it will help people. Kratom changed my life in so many positive ways. Thanks again for this site.
David Tomen
June 5, 2023
James, thank you for that report. Kratom can be an amazing supplement and it has helped tens of thousands of people. Knowledge about the compound along with the other points you mentioned including the right vendor following dosage recommendations, and lab testing are key.
Amanda
August 24, 2023
That is amazing! I use Kratom and have been for 5 years! I am a phlebotomist and function well at work and home, but I have fibro, depression, fatigue, and pain. I am looking into other nootropics to help my health.
Laura
May 5, 2023
Your article is amazing. Are you still doing private consultations?
David Tomen
May 6, 2023
Laura, I am still doing personal consultation. Here is a link to my calendar if you are interested: https://calendly.com/davidtomen/60-minute-consultation-with-nootropics-expert