Short Answer
Yes, you can use EPDs (Environmental Product Declarations) in vyzn. vyzn allows you to add your own materials, which also lets you bring in values from EPDs.
How It Works in vyzn
vyzn lets you create your own materials. This also allows you to use EPDs by transferring their values to a custom material.
Important: correctly interpreting, delimiting, and transferring the values from the EPD is your responsibility.