Nutritional Engineering Inc (NEI) invites you to visit our NSF, GMP & FDA compliant liquid supplement production facility and to take a tour of our Vista, California location. You will be able to see first-hand how we operate and the care and efficiency our team takes regarding our supplement contract manufacturing systems, processes, and procedures.  No doubt you will notice an immediate difference when compared to other non-GMP compliant supplement companies in the industry.

NEI conducts regular third-party inspections by various industry and government agencies and organizations as well as internal audits to ensure strict compliance of all supplement quality control standards. You can rest assured that as liquid vitamin and supplement manufacturers, there is no better than NEI.  We truly believe that Nutritional Engineering Inc is the best private label GMP supplement manufacturer in the USA and we hope to have the opportunity to serve you in the near future.