A unique 3-component formula with green tea, cayenne pepper and L-carnitine — developed to support your metabolism and energy while you work towards your weight goals.
Osanix combines well-known, tested plant extracts in one daily capsule — designed to complement a healthy diet and exercise, not replace them.
Green tea extract and chromium picolinate support a normal carbohydrate and macronutrient metabolism.
The 100 mg of caffeine in the formula helps tackle that sluggish feeling that often comes with dieting.
600 mg of wheat fibre helps you feel full, so the urge to snack between meals is easier to resist.
L-carnitine plays a role in transporting fatty acids, the building block of your energy during exercise.
Three parts that complement one another — together they form the basis of every daily serving.
Green tea extract (150 mg) and cayenne pepper (40 mg) are known as thermogenic ingredients — they give the formula its characteristic "warmth".
Wheat fibre (600 mg) absorbs moisture in the stomach and contributes to a feeling of fullness, making portions easier to keep under control.
Caffeine, L-carnitine, ginger and chromium round off the formula with focus and support for a normal sugar metabolism.
By the editorial team · Last updated: July 2026 · Reading time approx. 6 minutes
Osanix is a neatly composed supplement with recognisable, transparently listed ingredients (no "proprietary blend"). The green tea and caffeine doses sit within a realistic range, and the fibre and L-carnitine components give the formula breadth. It's no miracle cure — it works best as support alongside a calorie-controlled diet and enough exercise. For anyone looking for a helping hand who tolerates caffeine, it's a solid choice.
★ Final score: 4.7 / 5
Two capsules a day, taken before your largest meal. A clear formula with no hidden blends, and free UK delivery.
See current price →Osanix is a food supplement for weight management that supports your body during a period of calorie restriction. The manufacturer combines seven ingredients in a daily dose of two capsules. The idea is simple: no crash diet and no pills that do the work for you, but a bit of support for metabolism, energy and fullness while you make the healthy choices.
| Ingredient | Dose | What for |
|---|---|---|
| Green tea extract | 150 mg | Antioxidants & thermogenic support |
| Caffeine | 100 mg | Energy & focus (approx. one cup of coffee) |
| Cayenne pepper extract | 40 mg | Thermogenic "warmth effect" |
| Wheat fibre | 600 mg | Satiety & feeling full |
| Ginger extract | 60 mg | Digestive comfort |
| L-carnitine tartrate | 50 mg | Role in fatty acid transport |
| Chromium picolinate | 40 mcg | Normal blood sugar metabolism |
It's for you if you're already eating more healthily and exercising and want a little extra support with energy and fullness. Less suitable if you're sensitive to caffeine, pregnant or breastfeeding, or have a medical condition — in that case, speak to your GP first.
Not happy? Then you'll get your money back within 30 days. Paying later and in instalments is possible via Klarna.
"I take Osanix in the morning before breakfast. It gives me energy and I snack far less in the afternoon. Combined with a daily walk, I really notice a difference."
"I love that the label tells you exactly what's in it. For me it works mainly against the afternoon slump. Ordering was quick and delivery was free."
"No miracle pill, but a pleasant bit of support alongside my diet. Tip: don't take it too late in the day, it contains caffeine. The 3-pack is the smartest on price."
Osanix makes no over-the-top promises, and that's to its credit. You get a clear formula with honestly stated doses, a pleasant energy boost thanks to the caffeine, and fibre that helps against snacking. Don't expect magic without effort — but as a helping hand alongside a healthy diet and some exercise, it's one of the tidier options in this segment. Our score: 4.7/5.
Short, honest articles that help you make better choices — with or without a supplement.
After 40, your metabolism slows and your hormone balance shifts — the same approach that worked years ago suddenly does less. The three levers that really make a difference: enough protein at every meal, strength training to preserve muscle mass, and sleep. A thermogenic supplement with caffeine and green tea can give you the energy to keep that routine going, but the foundation remains diet and exercise.
Thermogenic substances briefly increase your heat production and energy expenditure. Green tea extract (with catechins) and caffeine are the best researched; cayenne pepper (capsaicin) is often added for the "warmth effect". The effect is modest and supportive — not a replacement for a calorie-controlled diet. What matters is a realistic dose, and that's exactly what makes Osanix's transparent labelling appealing.
Take two capsules a day, about 15–30 minutes before your largest meal, with two large glasses of water (at least 500 ml). Struggle to swallow capsules? You can open them and stir the contents into water.
Yes, about 100 mg per serving — similar to one cup of coffee. For that reason, it's best taken in the morning or early afternoon, and not just before bed.
That varies from person to person. You may notice energy and fullness fairly quickly; visible results on the scales depend on your diet, exercise and starting point. Osanix works as support, not as a replacement for a healthy diet.
Osanix is delivered across the United Kingdom, with free delivery on every order.
You can pay with Klarna (pay later or in instalments), PayPal and the usual credit and debit cards, including Visa, Mastercard and Amex.
Choose your bundle and enjoy free UK delivery and the 30-day money-back guarantee. The 3-pack, with over 50% off, is the best value.
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