This summary information comes from Fass.
Risk: The use of electrolytes is not considered to have any environmental impact.
Fass environmental information for Calcichew-D3 Citron (calcium carbonate, colecalciferol) from Takeda (downloaded 2021-06-29).
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