Despite effective vaccines, there is still a need for effective treatments for COVID, especially for people in the community. Dietary supplements have long been used to treat respiratory infections, and preliminary evidence indicates some may be effective in people with COVID-19. This study tested whether a combination of vitamin C, vitamin D3, vitamin K2 and zinc would improve overall health and decrease symptom burden in outpatients diagnosed with COVID-19.
Participants were randomised to receive either vitamin C (6 g), vitamin D3 (1000 units), vitamin K2 (240 μg) and zinc acetate (75 mg) or placebo daily for 21 days and were followed for 12 weeks. An additional loading dose of 50 000 units vitamin D3 (or placebo) was given on day one. The primary outcome was participant-reported overall health using the EuroQol Visual Assessment Scale summed over 21 days. Secondary outcomes included health status, symptom severity, symptom duration, delayed return to usual health, frequency of hospitalisation and mortality.
A total of 90 patients (46 control, 44 treatment) were randomised. The study was stopped prematurely due to insufficient capacity for recruitment. The mean difference (control-treatment) in cumulative overall health was -37.4 (95% CI -157.2 to 82.3), p=0.53 on a scale of 0-2100. No clinically or statistically significant differences were seen in any secondary outcomes.
The authors concluded that, in this double-blind, placebo-controlled, randomised trial of outpatients diagnosed with COVID-19, the dietary supplements vitamin C, vitamin D3, vitamin K2 and zinc acetate showed no clinically or statistically significant effects on the documented measures of health compared with a placebo when given for 21 days. Termination due to feasibility limited our ability to demonstrate the efficacy of these supplements for COVID-19. Further research is needed to determine clinical utility.
In several ways I am puzzled by this study. On the other hand, I should congratulate the naturopathic authors for honestly reporting such a squarely negative result. One could, of course, argue that the study was under-powered and that thus the findings are not conclusive. However, the actual survival curve depicting the results show clearly that there was not even the tiniest trend for the supplement to show any effect. In other words, a larger sample would have most likely yielded the same result.
Participants randomised to the treatment arm received:
- Vitamin D3 50 000 units orally once on day 1 of the study (capsule).
- Vitamin K2/D3 120 μg/500 units orally two times per day for 21 days (liquid).
- Vitamin C/Zinc acetate 2 g/25 mg orally three times daily for 21 days (capsule).
I fail to understand why the researchers might have conceived the hypothesis that such a mixture would be effective. Only 90 of a planned 200 participants were enrolled in this study which ran between September 2021 and April 2022. I fail to understand why recruitment was so poor that the study eventually had to be aborted. My speculation is that the naturopaths in charge of running the trial were too inexperienced in conducting such research to make it a success.
The study was supported by the Ottawa Integrative Cancer Centre Foundation and by Mavis and Martin Sacher. All investigational products for this study were provided in-kind by New Roots Herbal. Perhaps in future these sponsors should think again before they support amateurs pretending to be scientists?
Certain aspects of yoga can be used as a non-pharmacological conservative therapeutic approach to the management of chronic low back pain (CLBP). This overview summarized and evaluated data from current systematic reviews (SRs) on the use of yoga for CLBP.
The researchers searched SRs on the use of yoga for CLBP in nine electronic databases from inception to September 2023. The methodological quality was evaluated using the Assessment of Multiple Systematic Review Scale-2 (AMSTAR-2). The reporting quality of the included SRs was evaluated using the Preferred Reporting Item for Systematic Review and Meta-Analysis-2020 (PRISMA-2020), and the quality of data was graded using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE). Two independent researchers performed the screening, data extraction, and quality assessment process of SRs.
A total of 13 SRs were included. The results of the AMSTAR-2 indicated that the methodological quality of the included studies was relatively low. The PRISMA-2020 checklist evaluation results indicated that methodological limitations in reporting, especially regarding data processing and presentation, were the main weaknesses. The GRADE assessment indicated that 30 outcomes were rated moderate, 42 were rated low level, and 20 were rated very low level. Downgrading factors were mainly due to the limitations of the included studies.
The authors concluded that yoga appears to be an effective and safe non-pharmacological therapeutic modality for the Management of CLBP. Currently, it may exhibit better efficacy in improving pain and functional disability associated with CLBP. However, the methodological quality and quality of evidence for SRs/MAs in the included studies were generally low, and these results should be interpreted cautiously.
Sorry, but I beg to differ!
- The safety of a therapy cannot be ascertained on the basis of such small sample sizes.
- The effectiveness of yoga has not been demonstrated by these data.
- All that has been shown with this review is that the quality of the research in this area is too poor for drawing conclusions.
According to chiropractic belief, vertebral subluxation (VS) is a clinical entity defined as a misalignment of the spine affecting biomechanical and neurological function. The identification and correction of VS is the primary focus of the chiropractic profession. The purpose of this study was to estimate VS prevalence using a sample of individuals presenting for chiropractic care and explore the preventative public health implications of VS through the promotion of overall health and function.
A brief review of the literature was conducted to support an operational definition for VS that incorporated neurologic and kinesiologic exam components. A retrospective, quantitative analysis of a multi-clinic dataset was then performed using this operational definition.
The operational definition used in this study included:
- (1) inflammation of the C2 (second cervical vertebra) DRG,
- (2) leg length inequality,
- (3) tautness of the erector spinae muscles,
- (4) upper extremity muscle weakness,
- (5) Fakuda Step test,
- radiographic analysis based on the (6) frontal atlas cranium line and (7) horizontal atlas cranium line.
Descriptive statistics on patient demographic data included age, gender, and past health history characteristics. In addition to calculating estimates of the overall prevalence of VS, age- and gender-stratified estimates in the different clinics were calculated to allow for potential variations.
A total of 1,851 patient records from seven chiropractic clinics in four states were obtained. The mean age of patients was 43.48 (SD = 16.8, range = 18-91 years). There were more females (n = 927, 64.6%) than males who presented for chiropractic care. Patients reported various reasons for seeking chiropractic care, including, spinal or extremity pain, numbness, or tingling; headaches; ear, nose, and throat-related issues; or visceral issues. Mental health concerns, neurocognitive issues, and concerns about general health were also noted as reasons for care. The overall prevalence of VS was 78.55% (95% CI = 76.68-80.42). Female and male prevalence of VS was 77.17% and 80.15%, respectively; notably, all per-clinic, age, or gender-stratified prevalences were ≥50%.
The authors concluded that the results of this study suggest a high rate of prevalence of VS in a sample of individuals who sought chiropractic care. Concerns about general health and wellness were represented in the sample and suggest chiropractic may serve a primary prevention function in the absence of disease or injury. Further investigation into the epidemiology of VS and its role in health promotion and prevention is recommended.
This is one of the most hilarious pieces of ‘research’ that I have recently encountered. The strategy is siarmingly simple:
- invent a ficticious pathology (VS) that will earn you plently of money;
- develop criteria that allow you to diagnose this pathology in the maximum amount of consumers;
- show gullible consumers that they are afflicted by this pathology;
- use scare mongering tactics to convince consumers that the pathology needs treating;
- offer a treatment that, after a series of expensive sessions, will address the pathology;
- cash in regularly while this goes on;
- when the consumer has paid enough, declare that your fabulous treatment has done the trick and the consumer is again healthy.
The strategy is well known amongst practitioners of so-called alternative medicine (SCAM), e.g.:
- Traditional acupuncturists diagnose a ficticious imbalance of yin and yang only to normalise it with numerous acupuncture sessions.
- Naturopaths diagnose ficticious intoxications and treat it with various detox measures.
- Iridologists diagnose ficticious abnormalities of the iris that allegedly indicate organ disstress and treat it with whatever SCAM they can offer.
As they say:
No disease can be more surely, effectively, and profitably treated than a condition that the unsuspecting customer did not have in the first place!
Sadly, such behavior exists in convertional medicine occasionally too, but SCAM relies almost entirely on it.
This study was aimed at evaluating the effectiveness of osteopathic visceral manipulation (OVM) combined with physical therapy in pain, depression, and functional impairment in patients with chronic mechanical low back pain (LBP).
A total of 118 patients with chronic mechanical LBP were assessed, and 86 who met the inclusion criteria were included in the randomized clinical trial (RCT). The patients were randomized to either:
- Group 1 (n=43), who underwent physical therapy (5 days/week, for a total of 15 sessions) combined with OVM (2 days/week with three-day intervals),
- or Group 2 (n=43), which underwent physical therapy (5 days/week, for a total of 15 sessions) combined with sham OVM (2 days/week with three-day intervals).
Both groups were assessed before and after treatment and at the fourth week post-treatment.
Seven patients were lost to follow-up, and the study was completed with 79 patients. Pain, depression, and functional impairment scores were all improved in both groups (p=0.001 for all). This improvement was sustained at week four after the end of treatment. However, improvement in the pain, depression, and functional impairment scores was significantly higher in Group 1 than in Group 2 (p=0.001 for all).
The authors concluded that the results suggest that OVM combined with physical therapy is useful to improve pain, depression, and functional impairment in patients with chronic mechanical low back pain. We believe that OVM techniques should be combined with other physical therapy modalities in this patient population.
OVM was invented by the French osteopath, Jean-Piere Barral. In the 1980s, he stated that through his clinical work with thousands of patients, he discovered that many health issues were caused by our inner organs being entrapped and immobile. According to its proponents, OVM is based on the specific placement of soft manual forces that encourage the normal mobility, tone and function of our inner organs and their surrounding tissues. In this way, the structural integrity of the entire body is allegedly restored.
I am not aware of good evidence to show that OVM is effective – and this, sadly, includes the study above.
In my view, the most plausible explanation for its findings have little to do with OVM itself: sham OVM was applied “by performing light pressure and touches with the palm of the hand on the selected points for OVM without the intention of treating the patient”. This means that most likely patients were able to tell OVM from sham OVM and thus de-blinded. In other words, their expectation of receiving an effective therapy (and not the OVM per se) determined the outcome.
I was alerted to a new book entitled “Handbook of Space Pharmaceuticals“. It contains a chapter on “Homeopathy as a Therapeutic Option in Space” (yes, I am not kidding!). Here is its abstract (the numbers were inserted by me and refer to the short comments below):
Homeopathy is one of the largest used unorthodox medicinal systems having a wide number of principles and logic to treat and cure various diseases . Many successful concepts like severe dilution to high agitation have been applied in the homeopathic system . Though many concepts like different treatment for same diseases and many more are contradictory to the allopathic system , homeopathy has proved its worth in decreasing drug-related side effects in many arenas . Various treatments and researches are carried out on various diseases; mostly homeopathic treatment is used in joint diseases, respiratory diseases, cancer, and gastrointestinal tract diseases . In this chapter, readers will have a brief idea about many meta-analysis results of most common respiratory diseases, i.e., asthma, incurable hypertension condition, rheumatoid arthritis, and diarrhea and a megareview of all the diseases to see their unwanted effects, uses of drugs, concepts, and issues related to homeopathy . Various limitations of homeopathic treatments are also highlighted which can give a clear idea about the future scope of research . Overall, it can be concluded that placebo and homeopathic treatments give almost the same effect , but the less severe side effects of homeopathic drugs in comparison to all other treatment groups catch great attention .
Apart from the very poor English of the text and the fact that it has as good as nothing to do with the subject of ‘Homeopathy as a Therapeutic Option in Space’, I have the following brief comments:
- I did not know that homeopathy has ‘a wide number of logic’ and had alwas assumed that there is only one logic.
- Successful concepts? Really?
- So, homeopaths believe that the ‘allopathic system’ treats the same diseases uniformly? In this case, they should perhaps read up what conventional medicine really does.
- I am not aware of good evidence showing that homeopathy reduces drug related adverse effects.
- No, homeopathy is used for all symptoms – Hahnemann did not believe in treating disease entities – and mostly for those that are self-limiting.
- I love the term ‘incurable hypertension condition’; can somebody please explain what it is?
- The main limitation is that homeopathy is nonsense and, as such, does not really require further research.
- Not ‘almost’ but ‘exactly’! But thanks for pointing it out.
- Wishful thinking and not true. Firstly, the author forgot about ‘homeopathic aggravations’ in which homeopaths so strongly believe. Secondly, I know of many non-homeopathic treatments that are free of adverse effects when done properly.
Altogether, I am as disappointed by this article as you must be: we were probably all hoping to hear about the discovery showing that homeopathy works splendidly in space – not least because we have known for a while that homeopaths seem to be from a different planet.
The concept that the outcomes of spinal manipulation therapy (SMT) – the hallmark intervention of chiropractors which they use on practically every patient – are optimized when the treatment is aimed at a clinically relevant joint is commonly assumed and central to teaching and clinical use of chiropractic. But is the assumption true?
This systematic review investigated whether clinical effects are superior when this is the case compared to SMT applied elsewhere. Eligible study designs were randomized controlled trials that investigated the effect of SMT applied to candidate versus non-candidate sites for spinal pain.
The authors obtained studies from four different databases. Risk of bias was assessed using an adjusted Cochrane risk of bias tool, adding four items for study quality. Between-group differences were extracted for any reported outcome or, when not reported, calculated from the within-group changes. Outcomes were compared for SMT applied at a ‘relevant’ site to SMT applied elsewhere. The authors prioritized methodologically robust studies when interpreting results.
Ten studies were included. They reported 33 between-group differences; five compared treatments within the same spinal region and five at different spinal regions.
None of the nine studies with low or moderate risk of bias reported statistically significant between-group differences for any outcome. The tenth study reported a small effect on pain (1.2/10, 95%CI – 1.9 to – 0.5) but had a high risk of bias. None of the nine articles of low or moderate risk of bias and acceptable quality reported that “clinically-relevant” SMT has a superior outcome on any outcome compared to “not clinically-relevant” SMT. This finding contrasts with ideas held in educational programs and clinical practice that emphasize the importance of joint-specific application of SMT.
The authors concluded that the current evidence does not support that SMT applied at a supposedly “clinically relevant” candidate site is superior to SMT applied at a supposedly “not clinically relevant” site for individuals with spinal pain.
I came across this study when I searched for the published work of Prof Stephen Perle, a chiropractor and professor at the School of Chiropractic, College of Health Sciences, University of Bridgeport, US, who recently started trolling me on this blog. Against my expectation, I find his study interesting and worthwhile.
His data quite clearly show that the effects of SMT are non-specific and mainly due to a placebo response. That in itself is not hugely remarkable and has been suspected to some time, e.g.:
- Chiropractic manipulation for migraine is a placebo therapy
- Chiropractic treatments are placebos
- Chiropractic spinal manipulation = placebo!
- Manual therapy (mainly chiropractic and osteopathy) does not have clinically relevant effects on back pain compared with sham treatment
- Manual therapies for back pain: not better than a placebo
- Is spinal manipulation a placebo therapy?
What is remarkable, however, is the fact that Perle and his co-authors offer all sorts of other explanation for their findings without even seriously considering what is stareing in their faces:
SPINAL MANIPULATIONS ARE PLACEBOS
CHIROPRACTIC IS A PLACEBO THERAPY
This might be almost acceptable, if chiropractic would not also be burdened with significant risks (as we have discussed ad nauseam on this blog) – another fact of which chiros like Perle are in denial.
What does all that mean for patients?
The practical implication is fairly straight forward: the risk/benefit balance of chiropractic is negative. And this surely means the only responsible advice to patients is this:
NEVER CONSULT A CHIRO!
Fraud in US chiropractic care is on the rise. A shocking 82 percent of the chiropractic services billed to Medicare is unallowable, according to a recent audit by the Office of Inspector General. The audit found a lack of effective controls allowed an estimated $358.8 million in taxpayer funds to be improperly billed to Medicare.
Chiropractors engage in fraudulent billing practices in a variety of ways. Sometimes they target environments like nursing homes or substance abuse rehabilitation centers, looking for new patients who may – or may not – require their services.
In one case, a St. Louis-based chiropractor bribed police officers to get access to personal information about individuals who had been in car accidents. The chiropractor then contacted the accident victims and claimed to be from an insurance company or the state to arrange appointments at his practice.
In another case, a Houston-based chiropractor and his medical group settled with the federal government for $2.6 million and were also banned from billing federal programs for 10 years due to their involvement with a fraudulent billing scheme.
Lastly, in 2021, a chiropractor was found guilty of federal criminal charges, including five counts of healthcare fraud. The chiropractor was accused of defrauding health insurers by submitting $2.2 million in billings for chiropractic services that were never provided, office visits that never occurred, false diagnoses, and falsely prescribed medical devices.
Although other medical specialties also have bad actors, certain specific reasons can be identified as to why fraudulent billing and abuse have been increasing among chiropractors. These practitioners have fewer lower-cost codes to bill for, which means they need more patients to boost their earnings. For example, a service may only be billed at $25 or $50, but if this is billed to every patient on every visit, it quickly adds up. Because employers often have limited resources, it’s easy for minor charges to go unnoticed.
According to a 2018 report, the inspector general has conducted numerous evaluations and audits of chiropractic services since 2005 and has identified hundreds of millions of dollars in overpayments for services that did not meet Medicare requirements. The report also noted that the OIG’s investigations and legal actions involving chiropractors have demonstrated that chiropractic services are susceptible to healthcare fraud.
Personally, I am not surprised by such reports. Sure, not all chiropractors committ financial fraud. But arguably ALL chiropractors are dishonest when they tell their patients that their spinal manipulations are effective and safe for a wide range of conditions. To put it bluntly: chiropractic was founded by a crook on a bunch of lies and unethical behavior, therefore, it is hardly surprising that today the profession has a problem with honesty and fraudulent behavior.
The BBC has a popular program entitled JUST ONE THING presented by Dr, Michael Mosely. In each of these short broadcasts, Mosely presents JUST ONE THING that will make your life more healthy. Whenever I listen to them, I get slightly irritated. Mosely is clearly a very skilled presenter and makes complicated things easy to understand; but for my taste his approach is totally devoid of critical thinking. This is obviously the point of the series and probably one reason for its success. So, maybe it needs to be tolerated – perhaps, but surely not if it seriously misleads the public on important health issues.
The most recent broadcast was entitled EMBRACE THE RAIN and, in my view, it did cross this crucial line. Mosely explained that after it has rained, the air is full of negative ions and these ions are effective against depression. The center piece was his interview with Prof Michael Terman who explained some of his research on the subject, in particular a clinical trial which showed that intensely ionized air was effective against depression. Terman explained that this was more than a placebo effect, that it worked even for serious chronic depressed patients, and that the effect was better than standard treatments.
At no stage was there an even mildly critical question from Mosely. Consequently many depressed patients might now abandon their standard treatments and opt for air ionizers in their homes or walks in the rain which was deemed to be just as effective. In view of the fact that chronic depression, through its suicide risk, can be a life-threatening condition, I find this rather concerning.
My concerns were not exactly alleviated when I did a quick search for the evidence. The most recent review on the subject states that there has been considerable interest in the potential effects of negative air ions (NAIs) on human health and well-being, but the conclusions have been inconsistent and the mechanisms remain unclear. So, why does Terman promote NAIs as though they are the best thing since sliced bread? It took me less than a minute to find a possible answer: he holds a patent for a NEGATIVE ION GENERATOR!
It is laudable of the BBC and Michael Mosely to present aspects of healthcare in a simple, understandable way. Yet, it would be even more laudable, if they did their homework a bit better and, crucially, tried to also educate the public in critical thinking. After all ’embracing the rain’ will not change lives but critical thinking most certainly does!
If you assumed that the best management of a child by chiropractors is not to treat this patient and refer to a proper doctor, think again. This paper was aimed at building upon existing recommendations on best practices for chiropractic management of children by conducting a formal consensus process and best evidence synthesis. Its authors composed a best practice guide based on recommendations from current best available evidence and formal consensus of a panel of experienced practitioners, consumers, and experts for chiropractic management of pediatric patients. They thus syntheized results of a literature search to inform the development of recommendations from a multidisciplinary steering committee, including experts in pediatrics, followed by a formal Delphi panel consensus process.
The consensus process was conducted June to August 2022. All 60 panelists completed the process and reached at least 80% consensus on all recommendations after three Delphi rounds. Recommendations for best practices for chiropractic care for children addressed the following aspects of the clinical encounter:
- patient communication, including informed consent;
- appropriate clinical history, including health habits;
- appropriate physical examination procedures;
- red flags/contraindications to chiropractic care and/or spinal manipulation;
- aspects of chiropractic management of pediatric patients, including infants;
- modifications of spinal manipulation and other manual procedures for pediatric patients;
- appropriate referral and comanagement;
- appropriate health promotion and disease prevention practices.
The authors concluded that this set of recommendations represents a general framework for an evidence-informed and reasonable approach to the management of pediatric patients by chiropractors.
Whenever I read the term ‘evidence-informed’ I need to giggle. Why not evidence-based? Evidence-informed might mean that chiros are informed that their treatments are useless or even dangerous for children … but, on reflection and taking their own need for earning a living, they subsequently ignore these facts. And sure enough, the authors of the present paper do mention that a Cochrane review concluded that spinal manipulation is not recommended for children under 12, for a number of conditions, or for general wellness … only to then go on and ignore the very fact.
In doing so, the authors issue a string of self-evident platitudes which occasionally border on the irresponsible. For instance, under the heading of ‘primary prevention’, vaccinations are mentioned as the very last item with the following words:
If parents ask for advice or information about childhood vaccinations, explain that they have the right to make their own health decisions. They should be adequately informed about the benefits and risks to both their child and the broader community associated with these decisions. Consider referral to a health professional whose scope of practice includes vaccinations to address patient questions or concerns.
What that really means in practice, I fear, might be summarized like this: If parents ask for advice or information about childhood vaccinations, explain that they are dangerous, and that even D. D. Palmer recognized as early as 1894 that vaccination is ‘…the monstrous delusion … fastened on us by the medical profession, enforced by the state boards, and supported by the mass of unthinking people …’
Altogether, the ‘Clinical Practice Guideline for Best Practice Management of Pediatric Patients by Chiropractors’ is a thoroughly disreputable document. It was constructed in the way all charlatans tend to construct their consensus documents:
- convene a few people who are all in favour of a certain motion,
- discuss the motion,
- agree with it,
- write up the process
- publish your paper in a third class journal,
- boast that there is a consensus,
- stress that the motion must thereefore be ethical, correct and valuable.
Do chiropractors know that, using this methodology, the ‘flat earth society’ can easily pass a consensus that the earth is indeed flat?
I am sure they do!
This study investigated whether Tongxinluo,a traditional Chinese medicine compound that has shown promise in in vitro, animal, and small human studies for myocardial infarction, could improve clinical outcomes in patients with ST-segment elevation myocardial infarction (STEMI). The randomized, double-blind, placebo-controlled clinical trial was conducted among patients with STEMI within 24 hours of symptom onset from 124 hospitals in China. Patients were enrolled from May 2019 to December 2020; the last date of follow-up was December 15, 2021.
Patients were randomized 1:1 to receive either Tongxinluo or placebo orally for 12 months. A loading dose of 2.08 g was given after randomization, followed by the maintenance dose of 1.04 g, 3 times a day, in addition to STEMI guideline-directed treatments. The primary end point was 30-day major adverse cardiac and cerebrovascular events (MACCEs), a composite of cardiac death, myocardial reinfarction, emergent coronary revascularization, and stroke. Follow-up for MACCEs occurred every 3 months to 1 year.
Among 3797 patients who were randomized, 3777 (Tongxinluo: 1889 and placebo: 1888; mean age, 61 years; 76.9% male) were included in the primary analysis. Thirty-day MACCEs occurred in 64 patients (3.4%) in the Tongxinluo group vs 99 patients (5.2%) in the control group. Individual components of 30-day MACCEs, including cardiac death, were also significantly lower in the Tongxinluo group than the placebo group. By 1 year, the Tongxinluo group continued to have lower rates of MACCEs and cardiac death. There were no significant differences in other secondary end points including 30-day stroke; major bleeding at 30 days and 1 year; 1-year all-cause mortality; and in-stent thrombosis. More adverse drug reactions occurred in the Tongxinluo group than the placebo group, mainly driven by gastrointestinal symptoms.
The authors concluded that in patients with STEMI, the Chinese patent medicine Tongxinluo, as an adjunctive therapy in addition to STEMI guideline-directed treatments, significantly improved both 30-day and 1-year clinical outcomes. Further research is needed to determine the mechanism of action of Tongxinluo in STEMI.
Tongxinluo is mixture of various active ingredients, including
- Paeonia lactiflora,
- cicada slough,
- woodlouse bug,
With chaotic mixtures of this type, it is impossible to name all the potentially active ingredients, list their actions, or identify the ones that are truly relevant. According to the thinking of TCM proponents, this would also be the wrong way to go about it – such mixtures work as a whole, they would insist.
Tongxinluo is by no means a mixture that has not been studied before.
A previous systematic review of 12 studies found that Tongxinluo capsule is superior to conventional treatment in improving clinical overall response rate and hemorheological indexes and is relatively safe. Due to the deficiencies of the existing studies, more high-quality studies with rigorous design are required for further verification.
A 2022 meta-analysis indicated that the mixture had beneficial effects on the prevention of cardiovascular adverse events, especially in TVR or ISR after coronary revascularization and may possibly lower the incidence of first or recurrent MI and HF within 12 months in patients with CHD, while insufficient sample size implied that these results lacked certain stability. And the effects of TXLC on cardiovascular mortality, cerebrovascular events, and unscheduled readmission for CVDs could not be confirmed due to insufficient cases. Clinical trials with large-sample sizes and extended follow-up time are of interest in the future researches.
A further meta-analysis suggested beneficial effects on reducing the adverse cardiovascular events without compromising safety for CHD patients after PCI on the 6-month course.
Finally, a systematic review of 10 studies found that the remedy is an effective and safe therapy for CHD patients after percutaneous coronary interventions.
So, should we believe the new study with its remarkable findings? On the one hand, the trial seems rigorous and is reported in much detail. On the other hand, the study (as all previous trials of this mixture) originates from China. We know how important TCM is for that country as an export item, and we know how notoriously unreliable Chinese research sadly has become. In view of this, I would like to see an independent replication of this study by an established research group outside China before I recommend Tongxinluo to anyone.
Let’s not forget:
if it sound too good to be true, it probably is!