Efsa

Most supplement claims cannot be independently verified by consumers. This article provides a practical framework for evaluating supplement marketing against clinical evidence, regulatory standards, and quality verification methods.

For consumers and practitioners evaluating supplement claims, the primary challenge is accessing credible evidence rather than marketing material. This article identifies the most useful sources of independent supplement research.

Food supplements are regulated differently from medicines in the UK and EU, with no requirement to prove efficacy before sale. This article explains how to identify evidence-based supplements from those relying on marketing claims, using the regulatory framework and evidence hierarchy as a guide.

Hydrolysed collagen supplements have moderate evidence for specific outcomes: Proksch et al. (2014): 2.5g collagen peptides/day for 8 weeks improved skin elasticity (-7% elasticity loss vs. placebo). Shaw et al. (2017): 15g collagen hydrolysate + vitamin C post-exercise for 24 weeks increased collagen synthesis markers and reduced joint pain in athletes. No EFSA-authorised claims for collagen and skin or joints exist. No evidence supports collagen for weight loss or 'boosting metabolism'.

Slimming teas divide into three functional categories: stimulant teas (caffeine/EGCG — real but modest metabolic effect ~80 kcal/day, Dulloo 1999), laxative/diuretic teas (senna, dandelion — produce water and stool loss only, no fat loss), and flavoured teas with no active weight management ingredients. EFSA has not authorised weight loss claims for any slimming tea ingredient. FSA has issued warnings on senna-based detox teas.