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Vitamin D2 vs. Vitamin D3: Supplements for Infants



Information for parents

There are two different types of vitamin D - vitamin D3 (animal form) and vitamin D2 (plant form). Almost all vitamin D supplements for infants at the pharmacy are vitamin D3, however, most of the research has been done using vitamin D2. We wish to compare the two types of vitamin D supplements and see if the blood levels of vitamin D are the same in babies after taking one or the other.

Do you and your infant fit the study criteria?

breastfeeding * Healthy infant born at term (37-42 wks)

* Breastfeeding

* No gestational diabetes or hypertension (mother)

What is involved, if you agree to participate?

The study will begin when your baby is one month old and continues until he/she is 4 months of age. Even if you stop breast-feeding, we would still like to follow your infant to the end of the study. We will give you vitamin D drops for your baby to take daily. We will need to see you for 2 visits (1 and 4 months of age) at our clinic located in Ste. Anne de Bellevue.

At each visit we will collect:
• Weight and height of both the mother and baby
• Questionnaires about the mother’s diet and the baby’s diet
• Blood test to measure vitamin D levels of both the mother and the baby (by poking the heel or finger of baby)

Where do the visits take place?

The Front Door of MECNRU All study visits take place at the Mary Emily Clinical Nutrition Research Unit of McGill University in Ste. Anne de Bellevue. This beautiful house has been converted to a nutrition clinic which offers a welcoming and warm environment for participating families. Parking is available free of charge.

Vitamin D Supplements

Both types of vitamin D will be provided as a liquid. The liquids being used require only 1 small drop each day to provide the 400 IU required by babies. The vitamin D is being provided to the study by the company Baby Ddrops TM. The liquid contains no preservatives, no artificial flavours and no coloring. Ddrops™ is wheat-free, gluten-free, soy-free, corn-free, sugar-free, milk-free and peanut-free. The liquid is given as a single drop placed on the breastfeeding mother's nipple, or a pacifier or on the mother's fingertip.


Instructions How to use Ddrops[.pdf]