Urolithin A Supplements UK 2026: Buying Guide

How to choose a Urolithin A product based on dose, purity and human trial evidence.

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TL;DR: Urolithin A has the strongest human evidence of any mitochondrial supplement. Effective study doses are 500–1,000 mg/day. Look for products that state the actual Urolithin A content, not total capsule weight or pomegranate extract equivalent.

🐢 Tortoise Wisdom"A 'pomegranate extract' claiming to deliver Urolithin A is not the same as pure Urolithin A. Most people do not make meaningful Urolithin A from food."

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1. What Is Urolithin A?

Urolithin A is a gut-microbiome metabolite from ellagitannins in pomegranates, walnuts and berries. It triggers mitophagy, the recycling of damaged mitochondria.

2. Dose Used in Human Trials

  • 500 mg/day: shown safe and active in early human studies.
  • 1,000 mg/day: used in the JAMA Network Open muscle-endurance trial in older adults.

Food does not reliably provide these amounts.

3. Buying Checklist

  • Urolithin A amount: should state mg of Urolithin A, not 'equivalent to X mg of pomegranate'.
  • Purity: synthetic Urolithin A should be high purity; ask for COA.
  • Brand transparency: look for companies that publish clinical trial data.
  • UK seller: easier returns, consumer rights and customs handling.

4. Safety

Urolithin A has a clean short-term safety profile in published trials. Long-term data beyond a year are limited. Common side effects are mild GI symptoms.