Weight management supplements: what are they and do they work?

There is a new wave of supplements out there offering support in maintaining a healthy weight. They’re not directly talking about weight loss as such, but “metabolic support” or “weight management”. Rather than promising overnight results, they claim to work with your body — supporting blood sugar balance, curbing cravings, improving energy and nurturing the gut microbiome. In short: metabolic maintenance.

With the world finally having an open, grown-up conversation about weight — thanks, in part, to the rise of GLP-1 medications like Ozempic and Mounjaro — it’s a space that feels newly acceptable to explore. Where once the idea of a “weight loss supplement” would make us roll our eyes, today’s metabolic support products are positioned as a more holistic, health-focused evolution.

The first big moment came in 2024 with The Glucose Goddess’s Anti-Spike Formula (scroll down for our review), promising to stabilise blood sugar levels and therefore reduce cravings. It caused a bit of a furore with nutritionists pointing to the lack of evidence behind it. But since then, a host of brands have launched into the metabolic wellness market, combining ingredients such as green tea extract, which gently increases calorie burn, soluble fibre to boost fullness, chromium and myo-inositol for blood sugar balance, and prebiotics and probiotics to support gut health, a key player in metabolism and appetite regulation.

Of course, there are plenty of lifestyle interventions that can help you lose weight. “It’s not sexy, but the most reliable metabolic support comes from consistent foundations,” says registered nutritionist Charlotte Faure Green. “Getting enough protein supports muscle and stabilises appetite, while fibre from plant foods helps balance blood sugar, feed the gut microbiome and support hormone clearance. Prioritising sleep lowers hunger hormones, staying hydrated maintains energy, and exercise increases metabolic flexibility (your body’s ability to efficiently use fuel, providing stable energy and reducing cravings) — more than any supplement can.’

Still, there’s nuance in the weight management conversation, and reasons why so many women are newly curious about these supplements. Some are coming off GLP-1 medications (due to price rises, reaching their goal weight, or not wanting to stay on injections long-term) and looking for ongoing support. Others are navigating hormonal issues such as thyroid dysfunction or PCOS, both of which can slow metabolism and make weight regulation harder. And then there are midlife women facing the familiar story of a slowing metabolism and shifting hormones, where that stubborn half-stone (particularly around the middle) refuses to budge.

“In midlife, hormonal shifts cause changes to our body composition and distribution of fat,” explains  Dr Shahzadi Harper, who helped formulate Better Menopause’s Better Metabolism supplement (scroll down for more on this one). “Often the fat is around the middle, what we call visceral fat, and that’s associated with other metabolic changes, such as raised LDL cholesterol and increased risk of obesity and hypertension [high blood pressure]. Most importantly, insulin doesn’t work as efficiently, causing insulin resistance, which again causes fat deposition around the middle.” Harper, who also specialises in off-label GLP-1 microdosing for menopausal women, has personally had good results from supplementing with myo-inositol, a type of sugar produced naturally by the body and found in some foods, which she included in Better Metabolism. “There is evidence to suggest that myo-inositol is very good for reducing cravings and improving insulin sensitivity,” says Dr Harper. “Managing insulin resistance is a key part to weight loss. I have used myo-inositol regularly for the last ten years and, instead of getting my mid-morning dip at 11am, it carries me straight through to lunchtime.”

For many of us, medications aren’t an option for weight management. A tablet version of the GLP-1 drug Orforglipron is currently in trials and expected next year, which may make this class of medication cheaper and more accessible – but you’ll still need a prescription, which requires you to meet the criteria for obesity or have another related condition.

That’s where this new breed of metabolism-support supplements comes in: as a middle ground between lifestyle tweaks and medical interventions. They’re not designed to replace prescription medications, which work by artificially mimicking the hormone GLP-1, making you feel fuller for longer. Instead, they offer a gentler, and perhaps more sustainable, route to supporting energy balance, satiety and overall metabolic health.

“A supplement should be seen as one part of a wider approach, not a magic fix,” says Pippa Campbell, a nutritionist specialising in female health. “When the foundations are in place, the right formula can enhance results by supporting energy production, insulin function and metabolic efficiency.”

She says that consumers need to know what they’re looking for in these supplements. “Products that support insulin control, thyroid health, inflammation and energy metabolism are far more effective than stimulant-based formulas promising rapid results,” she explains. “And consistency is key. Combine it with regular protein intake, balanced blood sugar, resistance training, sufficient magnesium and good sleep. These habits strengthen the hormonal and metabolic foundations that determine how efficiently the body uses energy. Sustainable weight management is not about restriction but about creating the right internal conditions for the metabolism to thrive.”

What’s in weight loss supplements?

These are the ingredients you might typically see in some of these supplements, and Faure Green’s view on each one.

• Berberine: Found in the root, stems and barks of various plants, this “may help reduce post meal blood sugar spikes and positively influence the gut microbiome by increasing microbial diversity and reducing inflammation. It can interact with prescribed meds, so is best used under professional guidance.”
• Myo-inositol: The type of sugar naturally produced by the body and found in some fruits, grains and nuts. This “helps improve insulin signalling and may ease cravings, where blood sugar or hormone balance is disrupted, though shifts are subtle and take time so consistency is key”.
• Green tea extract: “Rich in catechins, a natural antioxidant compound found in plants, it’s been shown to slightly increase fat oxidation [your body’s ability to burn fat], especially in fasted states. High intakes can stress the liver though.”
• Chromium: A mineral found in a variety of foods, this is “linked to blood sugar support. It may help reduce cravings in people with insulin resistance or type 2 diabetes, but the effects in healthy individuals are limited.”
• Fenugreek: “In Ayurvedic medicine, this herb is known for supporting digestion, blood sugar balance and hormonal health. Some modern studies suggest it may help reduce appetite and support satiety, though research is limited.”
• Bromelain: “This is a digestive enzyme from pineapple better known for aiding digestion than weight loss. It may help with protein breakdown and reduce bloating, which can feel like progress even if it’s not directly metabolic.”

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