About Dow Development


DDL is an expanded division of Symbio, LLC, a specialty clinical research organization with extensive expertise conducting clinical studies in dermatology and other indications for pharmaceutical, generic and device companies.

From our early beginnings in 2005 as Symbio’s R&D laboratory located in Ft Collins, CO., we have quickly grown into a fully functioning, FDA-registered*, cGMP compliant formulation and manufacturing lab that provides expert product development services to our clients.

DDL is now located in a new 13,000 square-foot, state-of-the-art facility in Petaluma, California. Our fully equipped laboratories are ideal for formulation and manufacturing, allowing us to deliver unmatched topical product development services.

Led by Debra Dow, PharmD, DDL has extensive expertise in the following areas:

  • Formulation Development and Optimization Services
  • Analytical HPLC Method Development and Validation
  • Clinical Supplies Manufacturing and Labeling
  • ICH Stability
  • In Vitro Release Testing
  • CMC Program Strategy and Regulatory Support