En klinisk undersøgelse af indlagte patienter med vitamin D- mangel viste, at et dagligt indtag af to tabletter Calcichew- D3 (og tilhørende navne) i seks måneder normaliserede værdien af den 25 - hydroxylerede metabolit af vitamin D3 og reducerede sekundær hyperparathyroidisme og alkaliske fosfataser.
A clinical study of institutionalised patients suffering from vitamin D deficiency indicated that a daily intake of two tablets of Calcichew-D3 (and associated names) for six months normalised the value of the 25-hydroxylated metabolite of vitamin D3 and reduced secondary hyperparathyroidism and alkaline phosphatases.