Manufacturing Excellence

Manufacturing Practices and Certifications

Uncompromising operational practices at our state-of-the-art manufacturing facilities that surpass GMP standards and manufacturing regulations.


  • cGMPs for nutritional supplements in accordance with 21 CFR Part 111
  • NSF International has registered Douglas Laboratories as a GMP manufacturing facility
  • ISO/IEC 17025:2005 accreditation of in-house laboratories
  • VCP (Vendor Certification Program) to ensure raw material quality
  • Approved facility to produce NSF Certified for Sport® products 
  • Member of Council For Responsible Nutrition