Size
Flavour
JNX Sports The Ripper Fat Burner Sachets
The Ripper is JNX Sports' full-strength fat burner — fast-acting, strongly flavoured, and built around all-day energy and appetite control rather than a single mechanism.
The thinking behind it is practical: a fat burner is only useful if you can stick to the diet it's supporting. Energy keeps training quality up when calories are low, and appetite control makes the gap between meals easier to manage. Both matter more than any thermogenic effect on its own.
These are single-serving sachets — a low-commitment way to try the flavours before buying a tub, or a convenient option to keep in a bag or a desk drawer.
5g single-serving sachets in Pineapple Shred, Raspberry Lemonade and Razor Lime.
Contains caffeine. Not recommended for children, pregnant or breastfeeding women, or anyone sensitive to caffeine. Do not exceed the stated dose, and avoid taking it close to bedtime.
At a glance
£4.92
per daily dose
Strong
evidence for caffeine
Our honest take
A single-serving sachet of JNX's stimulant fat burner. The JNX label we checked lists 200 mg of caffeine per serving, which is the most EFSA advises a healthy adult has in one go, plus beta-alanine (the cause of the tingle) and proprietary blends that do not show individual doses. No supplement causes meaningful fat loss on its own; at best the caffeine gives a small rise in energy use and makes training feel easier. Treat it as a very strong coffee in a sachet, and check the sachet label, as formulas can differ between countries.
- You want to try a flavour before committing to a full tub
- You are a healthy adult who tolerates caffeine well and is already eating in a calorie deficit
- You are pregnant, breastfeeding, under 18, or have a heart condition, high blood pressure or anxiety
- You have already had coffee, energy drinks or a pre-workout that day
- You want to see every ingredient dose: most of the formula is in proprietary blends
The science
Caffeine· evidence: Strong
Caffeine is one of the best-supported performance aids, with consistent research showing it can improve endurance, strength and alertness. The doses used in research are usually 3–6 mg per kg of body weight, taken about an hour before exercise.
The catch is the dose: it adds to any coffee, tea or energy drinks you already have, and it can disrupt sleep if taken later in the day. There is no authorised health claim for caffeine and sports performance in the UK.
Typical dose: Research doses are 3–6 mg per kg of body weight
Safety: High caffeine content. Not recommended for children or pregnant or breastfeeding women. Healthy adults should keep total caffeine from all sources to no more than 400 mg a day and 200 mg at a time. Avoid late in the day and do not combine with other caffeine products.
Research we looked at:
Guest NS et al. (2021). International Society of Sports Nutrition position stand: caffeine and exercise performance. J Int Soc Sports Nutr 18:1.
EFSA NDA Panel (2015). Scientific opinion on the safety of caffeine. EFSA Journal 13(5):4102.
Beta-alanine· evidence: Moderate
Beta-alanine raises carnosine levels in muscle, which helps buffer acid during hard effort. Reviews of the research find a small benefit in high-intensity efforts lasting roughly one to four minutes, such as hard intervals or rowing sprints. It does little for single heavy lifts or for long, steady exercise.
It works by building up over weeks, so it needs about 3–6 g a day for at least two to four weeks. Many combined products contain far less than that. There is no authorised health claim for beta-alanine.
Typical dose: 3.2–6.4 g a day, split into smaller doses, for at least 2–4 weeks
Safety: Commonly causes a harmless tingling or pins-and-needles feeling on the skin (paraesthesia), which is stronger with larger single doses.
Research we looked at:
Trexler ET et al. (2015). International Society of Sports Nutrition position stand: beta-alanine. J Int Soc Sports Nutr 12:30.
Chromium· evidence: Limited
Chromium is a trace mineral needed in tiny amounts. Most people get enough from foods such as meat, wholegrains, broccoli and nuts, and true deficiency is rare.
Chromium supplements, especially chromium picolinate, are often sold for appetite, cravings or weight loss. Reviews of the trials have found the effect on body weight to be very small and of doubtful practical value. There is no good evidence that extra chromium helps people who are not short of it.
We make no claims about weight loss or blood sugar conditions. If you have diabetes or take medicine for blood sugar, speak to your GP before taking chromium.
Chromium contributes to normal macronutrient metabolism.
Chromium contributes to the maintenance of normal blood glucose levels.
These claims only apply to a product that gives at least 6 µg of chromium (15% of the NRV) per daily dose.
Typical dose: The NRV is 40 µg a day; supplements usually give 50–200 µg
Safety: The NHS says 10 mg or less a day of chromium from supplements is unlikely to cause harm; most products give far less. Speak to your GP first if you have diabetes or take blood sugar medication, or if you have kidney or liver disease.
Research we looked at:
NHS. Vitamins and minerals: others (chromium) (nhs.uk).
Onakpoya I et al. (2013). Chromium supplementation in overweight and obesity: a systematic review and meta-analysis of randomized clinical trials. Obes Rev 14(6):496–507.
EFSA NDA Panel (2014). Scientific opinion on dietary reference values for chromium. EFSA Journal 12(10):3845.
Ingredients & nutrition
Always check the pack you receive, as manufacturers sometimes update recipes.
How to use
Price per dose & how it compares
| Product | Size | Price | Per daily dose |
|---|---|---|---|
| This product | 5g (1 serving) / Pineapple Shred | £4.92 | £4.92 |
| This product | 5g (1 serving) / Raspberry Lemonade | £4.92 | £4.92 |
| This product | 5g (1 serving) / Razor Lime | £4.92 | £4.92 |
| Nutrend Fat Direct 2in1 Shot | from £27.81 | £1.39 | |
| DY Nutrition Blackbombs Thermogenic Fat Burner | from £19.99 | £0.67 | |
| OstroVit Fat Burner for Women | from £11.99 | £0.40 |
Cost per daily dose lets you compare packs of different sizes fairly.Worked out from our current prices.
Food supplements should not replace a varied, balanced diet and healthy lifestyle. General information, not medical advice. Speak to your GP or pharmacist first if you are pregnant or breastfeeding, have a medical condition or take medication.
The Ripper is JNX Sports' full-strength fat burner — fast-acting, strongly flavoured, and built around all-day energy and appetite control rather than a single mechanism.
The thinking behind it is practical: a fat burner is only useful if you can stick to the diet it's supporting. Energy keeps training quality up when calories are low, and appetite control makes the gap between meals easier to manage. Both matter more than any thermogenic effect on its own.
These are single-serving sachets — a low-commitment way to try the flavours before buying a tub, or a convenient option to keep in a bag or a desk drawer.
5g single-serving sachets in Pineapple Shred, Raspberry Lemonade and Razor Lime.
Contains caffeine. Not recommended for children, pregnant or breastfeeding women, or anyone sensitive to caffeine. Do not exceed the stated dose, and avoid taking it close to bedtime.
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