This summary information comes from Fass.
Fass environmental information for Aranesp (darbepoetin alfa) from Amgen (downloaded 2020-05-26).
The use of amino acids, proteins and peptides is not expected to have any environmental impact.
According to the European Medicines Agency guideline on environmental risk assessments for pharmaceuticals (EMA/CHMP/SWP/4447/00), vitamins, electrolytes, amino acids, peptides, proteins, carbohydrates, lipids proteins, vaccines and herbal medicinal products are exempted because they are unlikely to result in significant risk to the environment.
Author: Health and Medical Care Administration, Region Stockholm