Skip to content
Certified ManufacturersFor manufacturers

Manufacturer directory

Supplement manufacturers with a manufacturing or packaging facility on a public registry we check.

Describe what you need

We use requests to improve the directory. Privacy

31 manufacturers

Clear all

  1. Glanbia Performance Nutrition UK Ltd

    Makes its own brands; contract work not confirmed

    United Kingdomoptimumnutrition.com

    • Bars
    • Powders
    Informed Manufacturer(not a GMP audit)checked Oct 6, 2026