Hvis en bisphosphonat eller natriumflourid anvendes samtidigt, bør dette lægemiddel tages mindst tre timer før indtagelsen af Calcichew- D3 (og tilhørende navne), da den gastrointestinale absorption kan blive nedsat.
If a bisphosphonate or sodium fluoride is used concomitantly, this preparation should be administered at least three hours before the intake of Calcichew-D3 (and associated names) since gastrointestinal absorption may be reduced.