We’re frequently asked in our comment section about: vitamin d1 or d3. Truth is we’ve been delaying this article for a while until we had enough information & facts to allow us to enlighten our readers.
Official Answer
In D” now refers to several different forms. The two forms important in humans are: ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). German researcher Adolf Windaus first discovered 3 forms of vitamin D, which he called D1, D2, and D3.
It was later learned that the vitamin D1 was a mixture of compounds rather than a pure vitamin D product, so the term D1 is no longer used. Read Next → The Vitamin D Gui.
What Are The Main Differences Between Vitamin D And D3?
Or vitamin D3 (What is vitamin D3?).
For the purpose of this article, when vitamin D is mentioned, it will refer to vitamin D2. Its strength is typically measured in international units, which is abbreviated as “IU” on labeling. The 50,000 IU capsules are prescription only, while lower strengths are available over-the-counter.
Vitamin D is less expensive to produce and therefore is the form most commonly found in fortified food products. Vitamin D3 mainly comes from animal sources such as fish oil, fatty fish, liver, and egg yolks. Its strength is also measured in international units.
All forms of vitamin D3 are available over-the-counter.
Main Differences Between Vitamin D And D3 Vitamin D2 Vitamin D3 Drug Class Vitamin D Analog Vitamin D Analog Brand/Generic Status Brand And Generic Available Brand And Generic Available What Is The Generic Name?
What Is The Brand Name?
Ergocalciferol or vitamin D2
Drisdol, Calcidol, Calciferol Cholecalciferol, Vitamin D, Or Vitamin D3
Decara, Dialyvite D3 Max What Form(S) Does The Drug Come In?
1,000 Iu To 2,000 Iu Daily For Vitamin D Supplementation 1,000 Iu To 2,000 Iu Daily For Vitamin D Supplementation How Long Is The Typical Treatment?
Infants, children, adolescents, and adults Infants, children, adolescents, and adults.
Supplements 101: Vitamin D
In your diet, the most commonly found members are vitamin D2 and D3. While both types help you meet your vitamin D requirements, they differ in a few important ways.
Research even suggests that vitamin D2 is less effective than vitamin D3 at raising blood levels of vitamin D. This article sums up the main differences between vitamin D2 and D3.
What Is Vitamin D1 D2 D3?
In the early 1920s, a German researcher called Adolf Windaus isolated three forms of vitamin D, which he named Vitamin D1, D2, and D3. Subsequently, it’s rather hard to explain the difference between D1 and D2 since “vitamin D1” technically doesn’t exist.