UK Supplement Price-Per-Effective-Dose Index (June 2026)

A consolidated UK index that prices eight common supplements (vitamin D, magnesium, omega-3, collagen, iron, creatine, prenatal, ashwagandha) by their effective daily dose of the active ingredient, not by the pack. Effective-dose definitions and evidence bases trace to NHS and EFSA primary sources; price bands are illustrative daily costs in pence observed at common UK retailers in June 2026. Published and maintained at https://hervitals.co.uk/research/supplement-price-per-effective-dose-index/