What do systematic reviews say?

Vitamin D plus calcium vs vitamin D

It is very uncertain whether vitamin D plus calcium changes morbidity (number) Definition: fractures compared with vitamin D (very low certainty).

• Vitamin D, calcium or a combination of vitamin D and calcium for the treatment of nutritional rickets in children 2020 · Cochrane Headline outcomes only
  RR 0.24 [0.03, 2.08]
  1 study · 75 participants
  Very low