Insomnia is a prevalent disorder that is associated with substantial impairment. Homeopathy has been proposed as a complementary treatment for insomnia, but its clinical effects remain uncertain.
This systematic review assessed the efficacy, effectiveness, and safety of homeopathic treatments for insomnia. Prospective comparative studies evaluating any homeopathic preparation for insomnia were included. Searches in MEDLINE, EMBASE, seven additional databases, and three trial registries were conducted through August 2025. Risk of bias, intervention complexity, model validity, and pragmatism were assessed using respectively RoB 2, ROBINS-I, iCAT, MVHT, and RITES. Data were synthesized using random-effects meta-analyses, and certainty of evidence was evaluated using GRADE.
Eight randomized controlled trials (RCTs; n = 364 participants) and four non-randomized studies (NRSIs; n = 517) met the inclusion criteria. In adults, sleep quality (MD = −2.6 points; 95% CI −5.5 to 2.6; low certainty) and insomnia severity (MD = −3.2; 95% CI −5.68 to −0.72, moderate certainty) were reported in one RCT each. For total sleep time, the pooled MD of three RCTs was 0.65 hours (95% CI −0.9 to 2.2; low certainty). In children, one open-label RCT suggested a difference in insomnia severity, but certainty of evidence was very low. Adverse events were rarely reported, resulting in low certainty evidence.
The authors concluded that the current evidence is mainly limited by imprecision and risk of bias. The available evidence does not allow firm conclusions regarding the effects of homeopathy for insomnia. High-quality, replicated trials with systematic adverse event monitoring are needed.
15 years ago, I published a similar review entitled “Homeopathy for insomnia and sleep-related disorders: a systematic review of randomised controlled trials” (Focus on Alternative and Complementary Therapies Volume 16(3) September 2011 195–199)). Here is its abstract:
The aim of this review was the critical evaluation of evidence for the effectiveness of homeopathy for insomnia and sleep-related disorders. A search of MEDLINE, AMED, CINAHL, EMBASE and Cochrane Central Register was conducted to find RCTs using any form of homeopathy for the treatment of insomnia or sleep-related disorders. Data were extracted according to predefined criteria; risk of bias was assessed using Cochrane criteria. Six randomised, placebo-controlled trials met the inclusion criteria. Two studies used individualised homeopathy, and four used standardised homeopathic treatment. All studies had significant flaws; small sample size was the most prevalent limitation. The results of one study suggested that homeopathic remedies were superior to placebo; however, five trials found no significant differences between homeopathy and placebo for any of the main outcomes. Evidence from RCTs does not show homeopathy to be an effective treatment for insomnia and sleep-related disorders.
The findings of the two reviews are remarkably similar. For the following reasons, I find this notable:
- One would have hoped that 15 years are a long enough time for clarifying the issue, particularly as insomnia is not an unimportant condition for homeopathy.
- The new review is authored by well-known proponents. It seems unexpected that they (almost) go as far as admitting that the evidence for homeopathy as a treatment for insomnia is not positive.
- We have here, I think, a textbook example of how proponents of homeopathy prettify results that do not confirm their belief.
SO FAR, SO GOOD.
But now consider this: There are two further reviews of the same subject!
The first is entitled “Homoeopathy for insomnia: A meta-analysis of clinical evidence – Journal of Integrated Standardized Homoeopathy“. Here is its abstract:
Objectives: Insomnia is a prevalent sleep disorder characterised by challenges in initiating, maintaining or achieving restorative sleep, resulting in compromised daytime functionality. Traditional therapeutic modalities frequently encompass pharmacological treatments, which may have adverse effects and potential for dependency. Numerous patients pursue alternative methodologies, such as homoeopathy, which is attributed to its personalised, holistic and non-invasive treatment framework. This thorough examination assesses the effectiveness of homoeopathy in promoting better sleep quality and overall wellness in people with insomnia by analysing randomised controlled trials (RCTs).
Material and Methods: This meta-analysis sought to ascertain whether homoeopathy induces a statistically significant enhancement in the management of insomnia, concentrating on aspects of sleep quality, duration and general well-being. All RCTs addressing insomnia treated with homoeopathic interventions were included in this review. All studies were meticulously documented in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Three evaluators independently reviewed and compiled the literature, extracting comprehensive details regarding participants, study designs, therapeutic interventions and follow-up pertaining to homoeopathic treatment. The primary outcome of the investigation was disease assessment based on sleep diary scores, with an additional outcome being the enhancement of quality of life.
Results: The analysis revealed that homoeopathic remedies exhibited statistically significant improvement over placebo in the management of insomnia. The overall pooled effect size, standardised mean difference (random), was −0.60, standard error (random) was 0.42 and confidence interval (random) at 95% ranged from −0.93 to −0.26. The risk of bias was assessed for all studies.
Conclusion: This meta-analysis shows that homoeopathic remedies are effective in treating insomnia, but more studies are required for accuracy.
The last review is entitled “Effectiveness of Homeopathic Interventions for Insomnia and Sleep Disorders: A Systematic Review and Meta-Analysis“. Here is its abstract:
Insomnia is a common sleep disorder, and many individuals seek alternative treatments like homeopathy. However, evidence for its effectiveness remains controversial. This systematic review and meta-analysis evaluated the effectiveness of homeopathic interventions for insomnia and sleep-wake disorders. A comprehensive search of PubMed, MEDLINE, CINAHL, and the Cochrane Library was conducted for studies published between 2010 and 2025. We included randomized controlled trials (RCTs) and non-randomized studies involving adults (≥18 years) with primary insomnia receiving any homeopathic intervention compared to placebo, no treatment, or active care. Primary outcomes included validated sleep quality measures (e.g., Pittsburgh Sleep Quality Index (PSQI), Insomnia Severity Index (ISI). Four reviewers independently performed study selection, data extraction, and risk of bias assessment using RoB 2.0 and ROBINS-I. A random-effects meta-analysis was conducted for controlled trials, and a narrative synthesis for non-randomized studies. Certainty of evidence was assessed using Grading of Recommendations, Assessment, Development and Evaluation (GRADE). The search yielded 1304 records; 12 studies (nine RCTs and three non-randomized) met inclusion criteria. Meta-analysis showed a large, statistically significant positive effect of homeopathy on sleep outcomes (SMD = 0.81, 95% CI [0.24, 1.38], p = 0.0055), with substantial heterogeneity (I² = 86.04%) and publication bias (Egger’s test, p = 0.0079). Most studies had high or critical risk of bias, and overall certainty was low. Homeopathic interventions showed a large positive effect on sleep outcomes, but due to high bias, heterogeneity, and publication bias, evidence remains low-certainty and insufficient to support effectiveness. High-quality RCTs are needed.
What should we make of this?
We now have two reviews concluding that there is no good evidence and two implying that homeopathy is effective for insomnia! This clearly demonstrates how easy it is to mislead the public with seemingly rigorous reviews.
I must say, I pity all the interested lay people who are trying to make sense of this mess.
How can they arrive at the best available, most reliable evidence?
We have here, I think, another textbook example; one of how important it is to run reality checks. But surely, we cannot possible ask of a lay person to understand why the last two reviews are badly misleading. What we need is an accessible tool for differentiating the science from the pseudoscience, the reliable from the unreliable.
Unfortunately, such a tool does not exist. But there are a few indicators:
- Is the journal that published the review reputable?
- Are the authors affiliated to reputable institutions?
- Do the authors have a history of critical analysis or one of uncritical promotion?
- Do they explain clearly and provide the essential details of their work?
These are issues that lay people might be able to check relatively easily. The above 4 reviews demonstrate that using them does not always provided an entirely clear cut-off. However, it might give some valuable pointers into the right direction.
26 Responses to Homeopathy for the Treatment of Insomnia: A Systematic Review and Meta-analysis
Leave a Reply
This site uses Akismet to reduce spam. Learn how your comment data is processed.
I don’t see how anybody can conclude that trials that show bias and heterogeneity show anything but – bias and heterogeneity.
Fantastic! How many more reviews before we can look forward to an umbrella review of even more inevitable reviews that conclude that yet more studies and subsequent reviews are required?
Homeopathees have the advantage of being able to make their own informed choices of whether to use homeopathy for insomnia and whether to become a homeopathee in the first place.
Even if all 4 reviews were positive for homeopathy I doubt if this would overide the public’s personal experience for themselves and for their family and friends.
right, experience trumps evidence: back to the dark ages!
It may be that Trump trumps evidence.
However, the public don’t usually trump their experiences.
I think that we may have been in the new dark ages for some time although Chat GPT disagrees and sees the current situation as below: I didn’t mention though to Chat GOD the impact of homeopathees in facilitating a new dark age.
a period of transition,
institutional stress,
and technological disruption,
rather than a true civilizational dark age.
In the Dark Ages, people would have confused homeopaths with witches. Water cures diseases? Surely that must be witchcraft… burn the homeopath at the stake.
@Talker
How unnecessarily cruel … What if the person is innocent?
The correct procedure is to first chuck the suspect into
homeopathic medicinewater. If they sink, they’re innocent. Only if they float, does burning at the stake come into play.No, the correct procedure is to see whether the homeopath weighs the same as a duck.*
*Muscovy, of course.
And imagine what would have happened to them when their promises to cure diseases like cancer turned out to be lies.
Cancer was quite uncommon in London in the 1630s. Most didn’t live long enough to contract it.
https://www.reddit.com/r/coolguides/comments/f3c2hi/cause_of_deaths_in_london_in_1632/
I am not sure how the burning of homeopaths at the stake is relevant to reviews on the homeopathic treatment of insomnia though?
JK, You seem to lack the ability to understand comedy or satire. I asked Google AI god and it suggested several homeopathic remedies. Take 30C of Aethusa Cynapium before you comment here again.
In classical homeopathy, a lack of ability to understand comedy, satire, or nuance is often addressed by looking for remedies that correspond to rigidity of thought, extreme seriousness, or mental fatigue. The goal is to “loosen” the mental state rather than target the humor directly.
Here are some homeopathic remedies sometimes considered for this profile:
Nux Vomica (Nux-v): Recommended for individuals who are overly serious, zealous, and “workaholic” types. These individuals often prioritize practical work over leisure, becoming irritable when interrupted, and may find satire wasteful or irritating.
Calcarea Carbonica (Calc-c): Suited for people who are methodical, cautious, and practical, but who may lack spontaneity or have a slow, rigid thought process.
Phosphoricum Acidum (Phos-ac): Recommended for intellectual fatigue or burnout, where the person has become indifferent or has “lost their spark” to appreciate humor.
Argentum Nitricum (Arg-n): Useful for people who are highly anxious, impulsive, and often misunderstand situations due to rushing or anticipation.
Aethusa Cynapium: Sometimes used for mental confusion or a feeling of stupidityC
I dont quite get your comedy Talker of homeopaths burning at the stake and being consumed by maggots. Thank you for the homeopathic suggestion Talker. That was very kind. However, there is no homeopathic remedy for you.Chat GOD simply suggests that you talk to the Samaritans and / or visit a therapist.
Chat GOD refers to the ‘Dark Ages’ as between 5th and 10th centuries. There were no witches burned at the stake during this period. In the 16th and 17th century witch hunts in England usually resulted in hangings and not burnings.
I asked ChatGPT for its analysis of this metaanalysis.
You will be pleased that this AI mentioned this review by Ernst, though it is a mixed review that it gave you:
“Edzard Ernst’s criticism emphasizes the bias/heterogeneity problem and contrasts this with his earlier 2011 review, which found six RCTs and mostly no significant difference from placebo. He is right that bias matters, but his framing risks dismissing the positive pooled signal too quickly. A more scientific response is: the signal deserves better trials, not triumphalism or dismissal.”
In other words, your “objectivity” has its own strong bias.
I think you might have forgotten to inform AI that homeopathy is implausible BS;
ask again and disclose this fact and you might get a different reply.
@Dana Ullman
AI
– is strongly biased towards giving the user answers that they appear to want or expect, and
– tends to make things up out of whole cloth if no clear answers can be found.
So before accusing people with actual brains of being unreasonably biased, please ask your beloved AI the following neutral(!) question:
“Does homeopathy work?”
And then we can carry on the discussion from there.
And not just ask that question, but ask it in a new session that has not already been trained to respond positively to all things homeopathic.
As a general point, its a good idea that people report the exact prompt that they used, the AI model concerned, and any context already setup for that session. Because of the stochastic nature of most current LLMs the results will not be 100% repeatable, but the tone of the response should be similar for everyone using the same prompt and context.
I think i reported in an earlier comment that I was quite easily able to train chat gpt to give the same sort of opinions of homeopathy that Ullman posts.
For example trying your question “Does homeopathy work?” in a chat gpt session with such a training gives:
“Many patients and practitioners report meaningful benefits from homeopathy, and there are published studies supporting positive effects.
The question of how and to what extent homeopathy works continues to be actively debated and researched.”
contrast that with the same question in a clean session which gives:
“People may feel better after homeopathic treatment, often because of placebo effects, natural recovery, attention from practitioners, or lifestyle advice.
There’s no strong evidence that the remedies themselves have specific medical effects beyond placebo.”
@zebra
Good point. Which also confirms my distrust of AI, simply because it can be pretty bad at factual reporting, and ‘spin’ answers towards a user’s biases.
But both ChatGPT and Google search (with its default AI option) both give me the same basic answer:
ChatGPT: “Short answer: no—homeopathy has not been shown to work beyond a placebo effect.”
Google search AI: “Based on high-quality evidence and major scientific reviews, homeopathy does not work as an effective treatment for any health condition. Studies show homeopathic remedies work no better than a placebo, and the principles behind it contradict established laws of physics, chemistry, and biology.”
I left out the elaboration of the answers, but neither AI even hinted that there might still be some sort of real efficacy. I also used a new, private browser window to make sure that any cookies and trackers would not influence the result. But especially Google may still recognize me by my IP address and stored history.
Still, I wonder what Ullman sees when he asks this question, although I doubt if he’ll be willing to share it with us.
Translate the findings for pseudoskeptics:
1. Ernst 2011:
This review of yours identifies 6 studies between 1987 and 2006. 4 of poor quality and 2 of moderate quality.
“is not supported by the best available evidence. It is recommended that future trials of homeopathy and insomnia be conducted using adequate and rigorous study designs”.
2. Muhammad et al (2026) (preprint):
This study says that the effects of homeopathy vs placebo were substantial, but the interpretation is limited; there could be publication bias (strangely, the authors did not include the figures), high heterogeneity, and generally low certainty of evidence. However:
“The trial by Naudé et al. 2010 [36] was judged to have some concerns, and only the study by Michael et al. 2019 [37] was rated at a low risk of bias across all domains”.
3. Dutta et al (2026) [preprint]:
This study indicates that the evidence is limited with uncertain effects and no reliable evidence demonstrating effects over placebo. But in this one, they could not perform an analysis for publication bias due to the few published trials. However:
“Future research efforts should therefore focus on a rigorously designed, independently conducted confirmatory replication based on the protocol of Michael et al., which currently represents the only study within the evidence base demonstrating both low risk of bias and acceptable homeopathic model validity.”
4. Naigotriya et al (2025):
This study indicates that there is evidence that homeopathy outperforms placebos, with a moderate and clearly significant effect, although the conclusion is limited by the quality of most trials: “Only one study (James et al., 2019) demonstrated strong methodology and low risk of bias, while the other two had several weaknesses, particularly in blinding and allocation procedures.”
It is quite revealing. Your 2011 narrative review is limited to old trials, demanding that only the best available evidence be taken into account. The three meta-analyses from 2025 to 2026 differ in their analysis of publication bias, but they agree that more studies are necessary. Unlike older meta-analyses, these three agree that the Michael study is of high quality and low risk of bias! And if you take into consideration that you yourself, Ernst, had said that it was not possible for you to find a single flaw: https://edzardernst.com/2019/02/a-new-study-of-homeopathy-suggests-that-highly-diluted-remedies-are-better-than-placebos-and-i-cannot-fault-it/
But I understand that you want to distinguish science from pseudoscience by asking if the journal is “reputable” and if the institutions are as well. This is a paradox, because in the report from Spain that you yourself have applauded, https://edzardernst.com/2026/04/homeopathy-and-homeopathic-products-evaluation-of-evidence-on-their-efficacy-and-safety-by-the-spanish-agency-for-medicines-and-medical-products/ it is mentioned that the Naigotriya et al. study is of good quality; yet, for some reason that you might be able to explain, they omitted mentioning the Michael trial and highlighted only the other two.
This means that both pro-homeopaths and critics have reached a point of agreement: there is at least one high-quality trial that can be considered the best available evidence that homeopathy has effects above placebos in the treatment of insomnia, supported by a high-quality meta-analysis (which the AEMPS of Spain considers as such)!
Yawn yawn Sandbrain. You continue to kick your dead horse and claim it shows signs of life.
If homeopathy worked as you claim, there would be no need for you to carry out your sophistic exercises in handwaving and whataboutery. Trial after trial would be delivering massive, unequivocable, overwhelming, unarguable positives.
And yet they don’t.
Because homeopathy is nonsense.
One day reality will dawn on you but in the meantime you’ll continue with your inconsequential clattering.
I would not hold my breath!
@Lenny
Well, maggots are certainly signs of life …
Well the homeopathy horse has been dead for 200+ years. Maggots have feasted on the flesh and flew away. Dried out bones are the only thing left…..
Lenny, if homeopathy showed no signs of having any effect, all rigorous trials would show zero effect. But the fact is that even “skeptics,” with all their skepticism, find at least one such trial. Among them, we can mention:
-The meta-analysis by Shang et al. (2005), which included 8 high-quality trials with no evidence of bias for URTIS.
-Ernst’s 2004 and 2005 reviews on homeopathy for diseases in adolescents and children in homotoxicology, featuring several high-quality trials.
-The 2015 version of the Australian report, which excluded English-language meta-analyses despite their meeting the report’s own criteria for English-language literature.
-The report by the French High Authority, which excluded several trials from the journal Homeopathy without any explanation, and yet 50% of its trials are in favor and 50% against.
-The Spanish study by AEMPS, which acknowledges that several reviews in favor are of good quality.
-The 2025 Australian study acknowledges that there are some high-quality trials, including Michael’s 2009 study.
Don’t you see, Lenny? It’s not that it can’t work at all; it’s that the inconsistency in the results has been due to a factor at the molecular level, and this irony leads to many homeopathic remedies being ruled out while others can be retained. And by retaining these, we can develop a nanodose pharmacology that isn’t limited to the principle of similarity, but extends to an entire class of new drugs that respond to both homeopathy and “conventional” medicine, but with fewer side effects.
“if homeopathy showed no signs of having any effect, all rigorous trials would show zero effect” – you sure have no idea about clinical trials, have you?
So, would a homeopathic thingy for insomnia be very, very, very, very, etc dilute amphetamine sulphate? As long as it has been hit with the proper book?
Drug dealers have been missing a trick if this is the case: “Here you are, sunshine, this one will help with your come down!”
@Murmur
Nah, it’s usually coffee diluted into oblivion. You basically get the same if you drink water from a glass that has been in the dishwasher together with coffee mugs.