How to choose a TUDCA product

TUDCA is expensive to make well. That is one reason third-party testing and clear labelling matter more than flashy claims.

Checklist

1. Find the milligrams of TUDCA. Prefer products that state TUDCA per capsule and per serving.
2. Prefer transparency over mystery blends. If TUDCA sits inside a proprietary blend with no individual amount, skip it.
3. Look for testing talk you can verify. Identity, potency, heavy metals, and microbes are the basics many careful brands mention.
4. Decide on single ingredient vs stack. Single-ingredient TUDCA is easier to dose. TUDCA + NAC products are common in the UK and can be fine if both doses are listed.
5. Buy from reputable sellers. Brand sites, major pharmacies, Amazon sold by the brand or authorised sellers, and iHerb are usually clearer than unknown marketplaces.

By region

• US: Double Wood and Nutricost are frequent single-ingredient picks with clear dosing stories.
• UK: Applied Nutrition and Supplement Needs TUDCA + NAC products are widely available with labelled amounts.
• EU: iHerb is often the practical route for known US brands, with local Amazon sites as a secondary option for recognisable labels only.

See our shortlist on the products page. Links may earn a commission.