Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Bio-equivalency Study of the Effects of Vitamin D2 and Vitamin D3 Supplements on 25-hydroxyvitamin D Levels in Exclusively Breast Fed Canadian Infants
Brief Summary: There are two different types of vitamin D - vitamin D3 (animal source) and vitamin D2 (plant source). Almost all the usual vitamin D preparations for infants available in Canadian pharmacies contain vitamin D3 which may not be suitable for families who avoid animal products for social or religious reasons. The purpose of this study is to learn more about the two forms of vitamin D and if blood levels of vitamin D are similar in infants after taking them. Forty-eight breastfed infants will be randomly assigned to 400 IU of either vitamin D2 or D3 supplement for 3 months starting at 1 month of age. The difference in blood vitamin D levels, after 3 months of supplementation, between the two groups will help determine if the two supplements are equal.


Options:
A: Arm Label: 400 IU Vitamin D3; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: Cholecalciferol (D3) or ergocalciferol (D2) | Arm Label: 400 IU Vitamin D2; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Cholecalciferol (D3) or ergocalciferol (D2) | Intervention Type: DIETARY_SUPPLEMENT; Name: Cholecalciferol (D3) or ergocalciferol (D2); Assigned to Arm(s): 400 IU Vitamin D2, 400 IU Vitamin D3
B: Arm Label: 200 IU/day Vitamin D; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: Vitamin D drops, 200 or 400 or 600 IU/day or 800 IU/day | Arm Label: 400 IU/day Vitamin D; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D drops, 200 or 400 or 600 IU/day or 800 IU/day | Arm Label: 600 IU/day Vitamin D; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D drops, 200 or 400 or 600 IU/day or 800 IU/day | Arm Label: 800 IU/day Vitamin D; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D drops, 200 or 400 or 600 IU/day or 800 IU/day | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D drops, 200 or 400 or 600 IU/day or 800 IU/day; Assigned to Arm(s): 200 IU/day Vitamin D, 400 IU/day Vitamin D, 600 IU/day Vitamin D, 800 IU/day Vitamin D
C: Arm Label: Group A; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Placebo | Arm Label: Group B; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 (cholecalciferol), Dietary Supplement: Placebo | Arm Label: Group C; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 (cholecalciferol), Dietary Supplement: Placebo | Arm Label: Group D; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 (cholecalciferol), Dietary Supplement: Placebo | Arm Label: Group E; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 (cholecalciferol) | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3 (cholecalciferol); Assigned to Arm(s): Group B, Group C, Group D, Group E | Intervention Type: DIETARY_SUPPLEMENT; Name: Placebo; Assigned to Arm(s): Group A, Group B, Group C, Group D
D: Arm Label: choecalciferol; Type: EXPERIMENTAL; Interventions: Dietary Supplement: cholecalciferol | Arm Label: placebo; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: cholecalciferol; Assigned to Arm(s): choecalciferol | Intervention Type: DIETARY_SUPPLEMENT; Name: placebo; Assigned to Arm(s): placebo

Answer: A