On-Group launches Nu-Mii weight management programme

On-Group will roll out Nu-Mii, a soluble diet powder built around glucomannan and other nutrients, on the Ideal World website at 9 p.m. Friday, Aug. 7, 2026. The company is pitching the programme as a lower-cost, non-injection alternative as demand for GLP-1 weight-loss drugs grows in the UK.

Why it matters: - On-Group is targeting the fast-growing UK weight-loss market with a product positioned as an alternative to GLP-1 injections. - The company is pitching Nu-Mii as a more affordable and potentially easier-to-sustain option for people who want to lose weight without injections. - The launch arrives as more UK consumers are using or considering GLP-1 weight-loss drugs.

What happened: - On-Group announced the Nu-Mii Weight Management Programme on Aug. 5, 2026. - The programme launches exclusively on the Ideal World website at 9 p.m. on Friday, Aug. 7, 2026. - The launch will also be viewable on TV via Freeview Channel 51, Sky Channel 668 and Freesat Channel 810. - Nu-Mii is a soluble diet powder built around the five pillars of weight loss. - Glucomannan, a water-absorbing fibre derived from the konjac plant, is the key ingredient.

The details: - Users dissolve four grams of Nu-Mii powder in 250ml of water three times a day. - Each serving is taken 30 minutes before a meal over a 15-day period. - The programme also includes chromium, choline, magnesium, zinc, niacin, green tea, vitamin C, vitamin B6 and vitamin B12. - On-Group says the blend is designed to support appetite suppression, reduce tiredness and fatigue, improve cognitive function, balance blood sugar, reduce harmful fats and support metabolism. - James Greenwell said the powder forms a thick gel barrier in the stomach that lasts four to five hours. - Greenwell said the programme can help suppress appetite without the side effects linked to weight-loss injections. - Greenwell also said the product may help reduce cholesterol. - A 2026 YouGov survey for The Food Foundation found that almost 7% of the UK population had already used GLP-1 weight-loss drugs. - Research published in the British Medical Journal found that patients who stopped weight-loss injections regained weight four times faster than people who used traditional dieting and exercise. The BMJ study

Between the lines: - The launch is built around a clear market contrast: injections are popular, but cost and side effects remain sticking points for many consumers. - On-Group is leaning on Greenwell’s wellness background and earlier glucomannan product experience to frame Nu-Mii as a continuation of an established approach. - The company also appears to be using habit-change language, not just supplement claims, to make the product feel more sustainable than a short-term fix. - A 15-person test group trialled the programme before launch, and all reported feeling fuller after taking it. - None of the test participants reported common side effects linked to weight-loss injections. - Most of the test group reached their target weight loss within the standard 15-day period.

What's next: - On-Group is set to begin sales through Ideal World on Aug. 7. - The company is likely to use early customer response to test whether a powder-based programme can win users looking for an alternative to injections. - The launch could help show whether appetite-control supplements can compete with the convenience and popularity of GLP-1 drugs.

The bottom line: - On-Group is betting that a fibre-based, habit-focused programme can find a market among consumers who want weight-loss support without injections.