The use of amino acids, proteins and peptides is not considered to have any environmental impact.
This summary information comes from Fass.
Fass environmental information for Cyklo-f (tranexamic acid) from Meda, Cyklokapron (tranexamic acid) from Pfizer and Tranexamic acid Stragen from Stragen Nordic (downloaded 2022-04-11).
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