When it comes to finding a substance that has a history in the East and is available over the counter being touted as a weight loss agent in the West, berberine – a chemical found in a number of plants – is likely to have its supporters. Yet that’s not the same as arguing it is an agent backed by peer reviewed evidence.
Yes, it’s popping up as “natures Ozempic” on social media. There’s a range of websites listing weight loss, lowering of blood sugar levels, reduced cholesterol whilst some cite varied research papers. Companies such as Swisse will sing its praises and even point to “healthy insulin levels” and papers discussing its role in cancer. Nonetheless, it depends where you land when discerning what praises will be sung and what conclusive advice will be published, regardless of findings. In fact the effects of berberine are not well documented or defined.
The most in depth research will stress the need for further research. Larger samples, wider scope within methodology, a focus on specific components of cardiovascular health and even agreed upon amounts and formulations to be studied upon population samples with rigidly controlled age-health profiles. Berberine has been studied far more in Asia than in Western nations, but regrettably the necessary controls are not applied. Various compounds and amounts of berberine applied to subjects with different illnesses and histories cannot provide the statistical certainty one expects, much less serious criteria for falsification and reproduction.
We would possibly have convoluted issues from an ethical standing also. Consider the range of side effects listed in this WebMD article. Even worse is the fact some consumers have fallen dramatically ill within hours of taking berberine purchased online. This is not the norm but these patients find themselves in hospital with pronounced GI purging, dehydration and other complications.
Frustratingly, most punters browsing online have no idea what an AUST L number is, who demands its presence and where to find it. The Therapeutic Goods Administration (TGA) lists (L) unregistered medicines (vitamins or wellness products) by number, provided they won’t harm you. They don’t have to work, having not been pre-market evaluated by the TGA, but must have low risk ingredients. Nonetheless, it helps to be aware of how certain products are rated by the TGA, especially when they make grandiose claims. I would also urge you to do some research on the type of side effects and seriousness of prolonged use of berberine. This PDF is a succinct TGA berberine document.
In fact there is really no good science regarding berberine and weight loss. One study found that for individuals with nonalcoholic fatty liver disease, subjects who took berberine for three months experienced weight loss. It’s important to note that it interacts with a number of drugs and/or supplements and side effects include nausea, vomiting and diarrhoea. It reminds me somewhat of St. John’s Wort. Berberine can impact the P450 cytochrome in the liver and have quasi-impacts on other liver enzymes involved in breaking down drugs.
In order to escape the nasty side effect impact on the G.I. system that berberine has, individuals hoping to make a buck in the wellness industry came up with a new method of delivery. Users of social media, particularly Facebook in my case, might have noticed seemingly endless promotion of an amazing weight loss “patch” that “stopped belly fat… amazes experts… burns belly fat… [and] has science stunned”. In fact it was a clever marketing ploy, following an initial TV advertising gig I fortunately missed. Social media permitted rampant boasting about the impact of studies into oral berberine intake, to support offering it in transdermal patch form to avoid stomach acid destruction. This claim alone leaves one skeptical.
First came the ladies patch named “Purisaki”. It was red with a blue border. Amongst ample peacock terminology and reference to “an Australian startup” readers were treated to this compelling paragraph:
In the summer of 2025, a presentation at a major nutrition science conference turned heads. Jessica Taylor and Kate Morrison, the founders of the startup behind Purisaki, presented their revolutionary method for natural weight loss and detoxification.
Weightloss Mag Australia wanted to know all about Jess and Kate’s breakthrough that “is turning heads”. It all started with their own experience. For Jess and Kate is was all about the 8 part formula in their transdermal patch that encouraged detoxification and the burning of fat. They told the Mag:
So together with leading nutrition scientists, we developed a product that combines fat burning and detoxification – completely natural and with no side effects.
Not much later came the men’s patch called LifeGuage which mentioned that “science is stunned by berberine” thanks to Australian startup. This patch was less obvious, being a colour I might call “Anglo-Saxon pink”. We got to read this familiar-sounding paragraph:
In summer 2025, a presentation at a major sports nutrition conference caused a stir. Matt Berger and Tom Hartman, the founders of the start-up behind LifeGauge, presented their method for targeted fat reduction and metabolism activation – specifically designed for men whose bodies stop cooperating after 40.
Weightloss Mag Australia wanted to know all about Matt and Tom’s science-stunning breakthrough. Ironically, it all started with their own experience. For Matt and Tom it was all about the 8 part formula delivered via their transdermal patch. They told the Mag:
Together with nutritional scientists, we developed a method that delivers berberine and other natural active ingredients directly through the skin – bypassing the stomach, straight into the bloodstream.
Now for a product that’s “stunning science” one has a right to expect to see said product being subject to proper scientific studies. And yes, LifeGuage has kindly offered some research into related compounds used in their product. Remember, their transdermal patch is claimed to be extra-effective because delivery bypasses the gut, where other pills or supplements and indeed berberine, are “destroyed in the stomach before they can even work”.
So, one has the right to be disappointed to discover the LifeGuage scientific research page provides no research into transdermal patch application of the Australian startup-driven-science-stunning-weight-zapping-sticker. That’s because there is absolutely no evidence that application of these compounds via this method will improve health, energy, make you feel younger or have a positive impact on weight loss. Indeed, the research presented by LifeGuage all relates to human oral trials, animal studies or in vitro research. So, to repeat, there’s no evidence to support the claims made regarding this transdermal patch technology.
The LifeGuage and Purisaki transdermal patch ingredients are identical. Yet the impact is described slightly different for men and women. Remember, men over 40 get a fat gut and feel lethargic. Women just get more unsightly fat and tend to need antioxidant effects. The patches contain berberine, Green Tea extract, African Mango Seed extract, Fucoxanthin extract, punicic acid and vitamins. Promotors claim without linking to any evidence:
- Berberine Extract – Kickstarts fat metabolism, keeps blood sugar stable and stops cravings – so the body burns fat instead of storing it. In women: Naturally promotes metabolic function and supports healthy blood sugar levels to curb appetite, stop cravings and reduce fat storage.
- Fucoxanthin Extract – Boosts fat burning and specifically targets the stubborn belly fat typical in men over 40. In women: Promotes fat oxidation and energy metabolism and can reduce the accumulation of visceral fat.
- Pomegranate Oil (Punicic Acid Extract) – Protects cells, reduces inflammation and improves circulation – for more vitality and a better sense of wellbeing, in men. In women: Eases inflammation through antioxidant protection and improves fat metabolism so more fat is burned.
- African Mango Extract – Delivers a genuine feeling of fullness, curbs appetite and prevents the body from building new fat reserves, in men. In women: Regulates leptin levels for a better sense of fullness, curbs appetite and helps reduce the formation of new fat cells.
- Vitamin C, B1, B3 – Drive fat metabolism and support L-carnitine production – the substance that converts fat in the muscles into energy. The result: more fat burning, more energy, more performance in everyday life and during exercise, for men. In women: Support fat, protein and carbohydrate metabolism and the production of L-carnitine, which is essential for transporting fatty acids into muscle cells for energy, thereby boosting fat burning.
- This isn’t a fad – it’s targeted support for men who want to get their body back in shape. If you want to lose the belly fat and feel fitter again, LifeGauge is the way to go, for men.
- This isn’t a fad – this is science for effective fat burning. Those who want real results choose Purisaki. The rest can keep hoping for miracles, for women.
A little further down each promotional page we read:
This website is an advertisement and not a news article.
Results may vary. This product is not intended to diagnose, treat, cure or prevent any disease or health condition. Weight loss occurs as part of a healthy, calorie-reduced diet and exercise programme.
MARKETING DISCLOSURE: This website is a marketplace. As such, you should know that the owner has a financial connection to the products and services advertised on the website. The owner receives payment when a qualified lead is referred, but that is all.
ADVERTISING DISCLOSURE: This website and the products and services referred to on the website are advertising marketplaces. This website is an advertisement and not a news publication. All photos of persons used on this website are models. The owner of this website and of the products and services referred to on this website only provides a service through which consumers can obtain and compare information.
It’s enough to make one wonder exactly what side effects may eventuate if the product was misused.






