Osteoporosis, bone & mineral

Long-Term Treatment and Effect of Discontinuation of Calcifediol in Postmenopausal Women with Vitamin D Deficiency: A Randomized Trial

J Bone Miner ResPublished Randomised controlled trial

Authors' conclusion

The results confirm that long-term treatment with monthly calcifediol in vitamin D-deficient patients is effective and safe. The withdrawal of treatment leads to a pronounced decrease of 25(OH)D levels. Calcifediol presented a faster onset of action compared to monthly cholecalciferol. Long-term treatment produces stable and sustained 25(OH)D concentrations with no associated safety concerns.

Study context

Population
Postmenopausal women with vitamin D deficiency (25(OH)D < 20 ng/mL)298 evaluated
Participants
303 women
Comparison
Monthly calcifediol 0.266 mg vs cholecalciferol 25,000 IU
Methodological detailsphase III-IV, double-blind, parallel, multicentre, superiority
  • Phase III-IV
  • Double-blind
  • Parallel
  • Multicentre
  • Superiority

Primary result

As reported in the abstract

25(OH)D levels · month 4

Further findings

OutcomeGroup A1Group B
25(OH)D levels · month 1223.9 ± 8.0 ng/mL22.4 ± 5.5 ng/mL

25(OH)D after calcifediol withdrawal (Group A2) · month 4 vs month 12

Group A2 25(OH)D at month 4
28.5 ± 8.7 ng/mL
Group A2 25(OH)D at month 12 (decreased to baseline levels)
14.4 ± 6.0 ng/mL

Safety

No relevant treatment-related safety issues reported in any of the groups

Original publication

Long-Term Treatment and Effect of Discontinuation of Calcifediol in Postmenopausal Women with Vitamin D Deficiency: A Randomized Trial. J Bone Miner Res. Published 20 January 2023. doi:10.1002/jbmr.4776

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