Kratom Hangover, Nausea and the Wobbles: What Too Much Feels Like

If you searched for a kratom hangover, you probably took more than you meant to and are paying for it: queasy, unsteady, flat. The plain answer first. No peer-reviewed study and no health agency we could find describes a kratom hangover, and a PubMed search for the phrase on 6 October 2026 returned nothing. What the record does hold is narrower and more useful: how often nausea, vomiting, dizziness and a racing heart turn up, how long people say those effects last, what users mean by "the wobbles", and how the sources tell too much apart from withdrawal.

Is a kratom hangover real? What the record says, and what it does not

The searches settle the headline question. PubMed returned no results for "kratom hangover" on 6 October 2026, and a wider search pairing kratom with "next day", "morning after" or "residual" found six records, none about next-day effects in people. None of the FDA, CDC, NIDA, NCCIH, DEA or Poison Control pages we read uses the word.

That does not mean nobody feels rough the morning after. It means no source we found has defined or measured it, so a page promising that a kratom hangover lasts a set number of hours, or that some drink fixes it, is saying something the research has not.

The closest the record comes is duration. In an online survey of 2,798 kratom users run during 2017 and published by Garcia-Romeu and colleagues in 2020, 19.3% said they had experienced adverse effects and another 12.8% said maybe. Among those roughly 897 people, most rated the effects mild (63.2%) and said they lasted a day or less (86.1%). Across the whole sample, 76 people (2.7%) reported effects lasting two to six days. The authors warn that their sample likely skewed toward people "more positively inclined towards kratom", and that "adverse effects may be underestimated".

Poison Control's kratom page puts it plainly: "The effects of kratom can last for several hours. Generally, the higher the dose, the longer the effects will last."

One study did ask about the morning after, in real time. In 2022, 357 adults who used kratom at least three days a week logged their use by phone for 15 days, and next-morning sleep quality and quantity "were mostly unaffected by kratom use the previous day or night in moderate- to low-use clusters". That covers the moderate and lower-use groups only. And the authors say their results "generalize only to US adults using whole-plant kratom products regularly, not daily kratom extract users or infrequent consumers." King K sells extracts, so the one next-morning finding we have does not cover the kind of product on our shelves.

Among ten regular users interviewed for a 2023 study, accounts differed. One "did not report 'hangover effects' from taking kratom at night." Another described "fatigue when she 'come(s) down' from her last dose". Two people, two answers.

What too much looks like, with every figure and its denominator

Each row below has its own denominator, and none of them add together. Poison center figures count calls, not people harmed. Surveys count what self-selected users chose to report.

Two things are easy to misread. The 2016 CDC report lists no vomiting at all, and its percentages are of all 660 calls. And the trial's "4 of 30" is not a rate for users at large: there were six people per dose group, all "adult recreational polydrug users with opioid experience", each given one supervised dose thirty minutes after starting a high-fat breakfast.

The plain-language lists match. Poison Control: "Kratom has been reported to produce mild side effects, including nausea, vomiting, constipation, jitteriness, dizziness, and drowsiness." And: "With higher doses and overdoses of kratom, more severe effects have been reported, including seizures, coma, high blood pressure, abnormal heartbeat, and liver problems." FDA's kratom page, current as of December 2025, says the agency "has warned consumers not to use kratom because of the risk of serious adverse events, including liver toxicity, seizures, and substance use disorder (SUD)." It says kratom's most-studied alkaloids "may produce classic opioid-related effects such as sedation, nausea/vomiting, constipation, physical dependence/withdrawal, and respiratory depression that may lead to death," then adds: "However, as with all drugs, the ability of kratom to cause harmful responses will depend on how much of the drug is taken and under what conditions."

That last clause is the nearest thing to a rule about amount, and each source words it differently. Grundmann's 2016 survey of 8,049 users, recruited through social media and American Kratom Association resources, reported "a dose-dependent effect with negative effects, which were primarily gastrointestinal related including nausea and constipation", appearing mainly at high and more frequent dosing. In the trial, nausea and vomiting appeared only in the three highest-dose groups. NIDA adds that "kratom products vary, so effects are difficult to predict." A pattern, then, not a threshold. We leave the studies' amounts out on purpose. For the main alkaloid itself, see our piece on mitragynine toxicity.

Kratom nausea and vomiting: one case report, one trial, and the surveys

One case report is about exactly this question: a single patient, written up in the International Journal of Emergency Medicine in August 2020. A 62-year-old woman who had never taken kratom took a commercially available powder, felt nauseated that night and vomited four times. She came to the emergency department by ambulance, was treated with intravenous medicines and fluids, and went home the next morning once the symptoms had stopped. The authors call it "a classic case of a novel acute toxicity: kratom."

Read it for what it is. One person, so no rate. No drug screen and no mitragynine level; kratom was named from her history and by ruling other causes out. The product was never identified or tested, and it was a powder, not a liquid extract. And the symptoms were gone by morning, so it says nothing about a next day.

The only controlled counts of nausea and vomiting we found come from a trial FDA paid for. NCT06072170, run between August 2023 and January 2024, randomized six people to kratom and two to placebo in each dose group. Nausea appeared in 4 of the 30 on kratom and vomiting in 5, all in the three highest-dose groups; none of the 10 on placebo had either. Nobody had a serious adverse event, and nobody died. Results were posted on 29 September 2025, but a PubMed search on 6 October 2026 found no journal publication, so these are registry postings, not peer-reviewed results.

The placebo group matters too. Two of the ten people on placebo reported somnolence and one reported a headache, so not every symptom recorded in the trial came from kratom.

Kratom vomiting is on Poison Control's list of mild side effects and in the survey and trial counts, but absent from the 2016 CDC list.

The kratom wobbles: a user's word, and what clinicians have written down

The kratom wobbles is a users' term, and no agency page we read uses it. In what we found, it turns up in two peer-reviewed papers and one conference poster that was never peer reviewed, and they do not define it the same way.

The fullest description is a 2023 interview study in Frontiers in Pharmacology, funded by NIDA, in which ten people who used kratom at least three times a week were interviewed in 2022. Participants "described a constellation of symptoms that they called 'the wobbles' (a jittery feeling accompanied by what seemed to be nystagmus)". Nystagmus is involuntary eye movement. Their accounts included wobbling eyes, double vision, a spinning room, and sometimes vomiting or a cold sweat. One said it lasted 15 to 20 minutes; another, an hour at most; a third was dizzy for "a couple of hours".

What brought it on, in most accounts, was taking kratom "in larger than intended doses", mostly early in people's use. One participant described a similar episode at a normal amount with one particular product, which echoes Poison Control: "Products are not standardized so it is difficult to know the actual dose received if a person is taking kratom."

The authors say it was rare but "could be of scientific and clinical interest as a possible manifestation of serotonin syndrome." Read the verbs. They write that "we believe that high doses of kratom may contribute to the development of mild to moderate serotonin syndrome", and also that "To our knowledge, there are no published cases of kratom toxicity describing such objective signs of serotonergic excess", which they suspect is because clinicians are not looking for those signs. A hypothesis, not a diagnosis. They also note that recruits from sites like Reddit may share a vocabulary: "convergence of wording regarding adverse effects (e.g., wobbles)".

The survey version is blunter. The 2022 Smith survey quotes one participant: "The wobbles are what kratom users refer to as nausea and dizziness from taking too much." Same word, different symptoms.

The only clinical write-up of eye findings we found is a poster for a Colorado chapter meeting of the American College of Physicians. A 51-year-old woman arrived after nearly fainting, with "wavy" vision, oscillopsia and bilateral horizontal nystagmus; an extensive workup found no other cause, and her urine contained mitragynine. The poster says: "Although not commonly reported in medical literature, kratom can cause nystagmus, known in colloquial terms as the 'kratom eye wobbles'." One patient, no peer review, and a PubMed search for kratom nystagmus on 6 October 2026 returned only the interview study above.

And if you are wondering about driving, NIDA says the impact of kratom intoxication on driving "has not been extensively studied". Understudied is not the same as safe.

Too much, or withdrawal? The sources separate them by timing

Nausea and stomach upset sit on both lists, so the symptom alone cannot tell you what is going on. The sources draw the line by timing. The survey figures below are from Smith and colleagues' 2022 paper.

One gap deserves naming. No primary source we found gives withdrawal an onset time in hours. Treatment-center websites quote figures, but we could not trace them to a primary source, so they are not here.

The practical point runs one way. Feeling sick within hours of a larger amount than usual is the too-much side; feeling sick after stopping regular use is what the sources call withdrawal. More kratom is the answer to neither. Kratom is not a treatment for kratom withdrawal, opioid withdrawal or anything else. A clinician or Poison Control can help you work out which side you are on.

Alcohol and other drugs: where the serious outcomes cluster

The poison center data keep flagging one thing: kratom with alcohol or other drugs. The 2016 CDC report named ethanol first among the other substances and concluded that "the use of kratom can lead to severe adverse effects, especially when consumed in combination with alcohol or other drugs."

The March 2026 CDC report covers 14,449 kratom exposure reports to poison centers from 2015 to 2025. Most (62%) involved kratom alone. But multiple-substance reports had more hospitalizations (44% to 56% a year, against 24% to 29%), more serious outcomes (57% to 66%, against 41% to 49%), and 184 of the 233 kratom-associated deaths (79%). Ethanol was the most common other substance in multiple-substance reports, at 22%. CDC's explanation: "Kratom use with alcohol, opioids, benzodiazepines, stimulants, and antidepressants might increase risk through additive pharmacodynamic effects on central nervous system pathways and through pharmacokinetic interactions that increase systemic exposure to substances used with kratom."

CDC states the limits itself. An exposure report is "actual or suspected contact with a substance that prompted a consultation with a poison center, regardless of toxicity or clinical manifestations", and "determining which substance was most related to clinical effects or medical outcome, including death, was not possible." So the numbers neither prove kratom caused those outcomes nor prove kratom alone harmless. They show where serious outcomes cluster.

No source we found ties kratom plus alcohol to a worse next morning specifically; the reason to keep them apart is the one CDC gives. On medicines, Poison Control is frank: "We have little information about drug-drug interactions with kratom." A poison center can check what is known if you name everything you take.

What our own product pages state

King K sells three liquid kratom extracts, Silver, Gold and Platinum, and three Rush products, Ruby, Emerald and Diamond. Here is what our own product pages print, as contents per item sold. They are not serving suggestions, not a ranking and not a line for how much is too much.

Gold: "1,000 mg full-spectrum extract and 300 mg mitragynine". Platinum: each bottle "holds 1,667 mg of total kratom extract with 500 mg of mitragynine". Rush Ruby, Emerald and Diamond: each page states 100 mg of mitragynine and 100 mg of caffeine. Silver's page gives no milligram figure, but says Silver "is still an extract, not plain leaf powder". Silver and the Rush products also list ethyl alcohol as an ingredient, and none of our pages states how much. You should know that on a page that tells you not to mix kratom with alcohol. We are not going to guess what it means for how anyone feels, because no source we read addresses it.

Now the part that cuts against us. Much of the evidence above either involved leaf or did not record the product type. CDC's 2026 report says "The recent shift from traditional leaf preparations to high-potency alkaloid extracts has raised safety concerns", while its own data "do not include information about whether the kratom use involved traditional leaf products or semisynthetic or concentrated formulations". And in the 2023 interview study, "extracts and high doses of any product were acknowledged as warranting caution." The record on extracts is thinner than the record on leaf, and a thin record is not a clean one.

What to do if you have taken too much

Stop, and do not take more. Not to take the edge off, and not the next morning.

Do not add alcohol or other drugs. That is where CDC's reports found the higher rates of hospitalization and serious outcomes.

Call Poison Control at 1-800-222-1222 if someone "develops concerning side effects that are not life threatening, or you need more information", in the words of its kratom page, which adds that "Expert guidance is always free, confidential, and available 24 hours a day." Have the product with you and say what else was taken.

Call 911 if someone is unresponsive, difficult to wake, not breathing normally, or having a seizure. Poison Control: "If someone overdoses on kratom, seek medical attention or call 911." "If the person is not breathing, administer bystander naloxone." "If the person has a seizure, you can place them in a safe position on their side until help arrives."

Talk to a clinician, especially if this keeps happening, if you take prescription medicines, or if the symptoms started after you stopped rather than after you took more.

Report it. FDA "encourages health care professionals and consumers to report any adverse reactions to the FDA's MedWatch program or the Safety Reporting Portal." If the product was one of ours, tell us too through our contact page. That does not replace the calls above.

What is missing from this list is missing on purpose. Hospital care in a case report is not something to copy at home, and what interview participants did while waiting it out is anecdote, not treatment. No source we read supports a home remedy for a kratom hangover, because no source we read defines one.

Kratom hangover questions

Is a kratom hangover a recognized condition?

No. As of 6 October 2026 no peer-reviewed study or health agency we found describes one. The nearest data are durations: in one survey run in 2017, most reported adverse effects were mild and lasted a day or less.

How long does kratom nausea last?

No source we found gives a duration for nausea on its own. Poison Control says kratom's effects can last several hours and that higher doses generally last longer. In the single 2020 case report, the vomiting began at night and had stopped by morning, after hospital treatment.

What are the kratom wobbles?

A user term, not a diagnosis. In a 2023 interview study, regular users applied it to a jittery feeling with what seemed to be nystagmus, an involuntary eye movement, after larger than intended amounts. One survey respondent defined it as nausea and dizziness from taking too much.

Is feeling sick after I stop kratom the same thing?

The sources treat it differently. Symptoms within hours of taking more than usual sit on the too-much side; symptoms after regular use stops are described as withdrawal. Kratom is not a treatment for either. A clinician, findtreatment.gov or Poison Control at 1-800-222-1222 can help.

When should I call Poison Control or 911?

Call Poison Control at 1-800-222-1222 for worrying symptoms that are not life threatening, or for information; it is free, confidential and open 24 hours a day. Call 911 if someone is unresponsive, not breathing normally, or having a seizure.

Disclaimer: this page summarizes publicly available material as of 6 October 2026. It is general information, not medical advice, and no substitute for a clinician. Survey figures come from self-selected samples, poison center figures count reports rather than people harmed, and case reports describe single patients. Product figures are as stated on our product pages on 6 October 2026. Statements about botanical products have not been evaluated by the Food and Drug Administration, and no product is intended to diagnose, treat, cure or prevent any disease.