This list includes 3 vitamins that start with D, ranging from “Vitamin D” to “Vitamin D3”. These D vitamins are fat-soluble compounds that support bone health, calcium balance, and immune function.

Vitamins that start with D are fat-soluble micronutrients (notably D2 and D3) that regulate calcium and phosphorus levels. Historically, cod liver oil and sensible sun exposure helped prevent rickets in many regions.

Below you’ll find the table with Vitamin, Benefit, Food sources, and Recommended Daily Intake (RDI).

Vitamin: Shows the vitamin name and common forms so you quickly identify each entry.

Benefit: Summarizes key 1–2 health effects in plain language so you understand its main role.

Food sources: Lists 3–5 primary foods that supply the vitamin, useful for meal planning.

Recommended Daily Intake (RDI): Provides RDI values with age and gender notes and an authoritative source for context.

Vitamins that start with D

NameCommon forms / synonymsPrimary food sourcesRDI (value, population caveat, source)
Vitamin Dcalciferol (includes D2 and D3)Fatty fish (salmon and mackerel); Cod liver oil; Fortified cow milk and plant milks; Egg yolks600 IU (15 µg), adults 19–70 (NIH)
Vitamin D2ergocalciferol; vitamin D2UV‑exposed mushrooms; Fortified plant milks and cereals; Yeast‑derived supplements600 IU (15 µg), adults 19–70 (NIH)
Vitamin D3cholecalciferol; vitamin D3Fatty fish (salmon and mackerel); Cod liver oil; Egg yolks; Fortified dairy and plant milks600 IU (15 µg), adults 19–70 (NIH)

Descriptions

Vitamin D
Fat‑soluble vitamin essential for calcium and phosphorus absorption, bone health, and immune function; excess supplementation can cause hypercalcemia so follow recommended intakes.
Vitamin D2
Plant/fungal form used in fortification and supplements; raises vitamin D status but may be slightly less potent than D3; monitor dosage to avoid overdose.
Vitamin D3
Animal‑derived form that more effectively raises and maintains vitamin D levels; supports bone health and immunity; high doses can lead to toxicity if unmonitored.
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