Who's behind Pro D3? Check before you buy

Pro D3 is owned by Synergy Biologics Ltd, headquartered in the United Kingdom. No. The ultimate owner of Pro D3, Synergy Biologics Ltd, is headquartered in the United Kingdom, not in the United States.

Synergy Biologics is a UK-based developer and manufacturer of healthcare products, nutritional supplements, and pharmaceuticals, specializing in high-quality vitamin formulations and medical devices.