Let's be upfront: no fat-loss supplement works without a calorie deficit. Anyone telling you otherwise is selling something. What the better products can do is make a deficit easier to sustain — more energy, better appetite control, a little metabolic support.
Thermogenics
Products like Applied Nutrition's Shred-X (capsules or powder), BioTechUSA's Black Burn and Grenade's Thermo Detonator combine caffeine with ingredients such as green tea extract. The realistic benefit is energy and focus while dieting — valuable when calories are low and motivation dips. Because they're caffeine-heavy, don't stack them with pre-workouts or late-day coffee, and always start with the lowest suggested dose.
L-carnitine
Involved in shuttling fatty acids into cells to be used for energy. Applied Nutrition offer it as a liquid (L-Carnitine Liquid 3000) and convenient ready-to-drink shots. It's stimulant-free, making it a sensible option for evening trainers.
CLA and gentler options
CLA — available in Applied Nutrition's CLA Gold softgels or combined with L-carnitine and green tea in their three-in-one capsules — is a mild, stimulant-free choice. BioTechUSA's Green Coffee and ALA (alpha lipoic acid) round out the gentler end of the category, and their Glucomannan + Chromium formula supports appetite control with a well-recognised fibre.
The honest hierarchy
- Calorie deficit — non-negotiable
- High protein intake — protects muscle and keeps you full
- Training and daily movement
- Sleep — poor sleep sabotages appetite hormones
- Then supplements, as the final few per cent
Browse the Slimming collection — and pair anything you choose with a plan you can stick to.
This article is for general information only and is not a substitute for professional medical advice. High-caffeine products are not recommended for under-18s or during pregnancy.