Weak evidence · Fat loss
Raspberry ketones and garcinia
Sold for rapid weight loss
Weak evidence
Mostly small studies, animal trials or conflicting results. Not worth your money as a foundation.
Hardly any studies in humans have been done with raspberry ketones alone; the claims come from cell and animal experiments. For Garcinia cambogia the evidence is mixed: some studies found a small effect of around a kilo, others none. Severe liver damage has been reported.
- Dosage
- Not recommended
- Timing
- —
- Approx. price
- €20–60 per month
Watch out
The US NCCIH says it is unclear whether it helps and warns of liver damage, including with multi-ingredient products.
Frequently asked questions about supplements
Does Raspberry ketones and garcinia really work?
Weak evidence. Mostly small studies, animal trials or conflicting results. Not worth your money as a foundation.
What does Raspberry ketones and garcinia cost?
€20–60 per month
Basics first, then the tub
Supplements are called supplements because they add to something. Sleep, a protein intake that hits your protein calculator , a programme where you lift progressively heavier and enough food together do a hundred times more than the best-researched item on this list. Once those are in place, creatine, caffeine and vitamin D in winter are the three you can spend money on with a clear conscience — for less than ten euros a month combined.
Sources
- Onakpoya I et al. (2011). The use of Garcinia extract (hydroxycitric acid) as a weight loss supplement: a systematic review and meta-analysis of randomised clinical trials. J Obes 2011:509038. (meta-analysis)
- NIH National Center for Complementary and Integrative Health (NCCIH): Garcinia cambogia. (fact sheet)
More supplements in this category
Last updated: October 2026
This page summarises scientific research and is not medical advice. If you take medication, are pregnant or have a liver, kidney or thyroid condition, discuss supplements with your doctor or pharmacist — even the innocent-looking ones.
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