Founder

Matrielle was solely founded and developed by Dr. Maria Giannopoulos, a board-certified female OB-GYN.

After years of caring for women across all stages of life, one problem became clear—many vitamins were not even meeting basic nutritional needs, let alone the elevated demands of pregnancy.

They were difficult to tolerate, overly complicated, or disconnected from how women actually live.

Matrielle was created to change that.

Built from clinical experience, every formulation reflects what women need—and what they will consistently take.

Beyond physician-approved. 
Physician-created.