Clinical study of vitamin D supplementation for breast-fed infants.

Clinical study of vitamin D supplementation for breast-fed infants. - Clinical study of vitamin D supplementation for breast-fed infants.

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000052350

Enrollment

111

Registered

2023-09-29

Start date

2022-01-13

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast-fed infants

Interventions

Weekly vitamin D supplementation (1000-1400 IU/dose) for three months.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Breast-fed or mixed-fed healthy infants born after 36 weeks of gestation.

Exclusion criteria

Exclusion criteria: Infants with chromosomal abnormalities or multiple congenital malformations. Infants with feeding problems or failure to thrive. Infants born before 36 weeks of gestation.

Design outcomes

Primary

Measure	Time frame
Frequency of vitamin D insufficiency (25(OH)D < 20 ng/mL) after weekly Vitamin D supplementation for three months.	—

Secondary

Measure	Time frame
Comparison of following items between intervention and historical control group. 1. Serum concentration of 25(OH)D after vitamin D supplementation. 2. Serum concentration of markers for bone metabolism (Ca, P, ALP, intact PTH etc).	—

Countries

Japan

Contacts

Public ContactKazushige Ikeda

Saitama city hospital Division of Neonatology, Department of Pediatrics

kazuiked@keio.jp+81-48-873-4111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026