Vitamin D2
Alternatives

(Ergocalciferol)

Vitamin D2 (Ergocalciferol)

Prescription or OTC

Vitamin D3 (Cholecalciferol)

Prescription or OTC
1 of 1 alternatives
Raises Vitamin D levels.

Vitamin D2 (Ergocalciferol) works for vitamin D deficiencies and is available over the counter, but your body doesn't absorb it as well as Vitamin D3.

Raises Vitamin D levels.

Vitamin D3 (Cholecalciferol) works well for vitamin D deficiencies and is available over the counter. It absorbs better than vitamin D2, but it's animal-based so vegetarians and vegans might not want to take it.

Upsides
  • Effective for vitamin D deficiencies.
  • Available in generic and over the counter.
  • This is the plant-based version of vitamin D, so it's useful for vegetarians.
  • Available in oral solution, tablet and capsules.
  • You can take this as a once a day or once a week medication.
  • Available in generic and over the counter.
  • Available in oral solution, tablet, and capsules.
  • You can take it as a once-a-day or once-a-week medication.
  • This version of vitamin D is better absorbed by the body than vitamin D2.
Downsides
  • Your body doesn't absorb Vitamin D2 as well as Vitamin D3.
  • This is an animal-based version of vitamin D, so vegetarians and vegans may not be comfortable with taking this supplement.
Used for
Dosage forms
  • Pill
  • Liquid capsule
  • Liquid
  • Pill
Price
Lowest price near you
$4
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Reviews
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1142 
61%
think this treatment is worth it
39%
think this treatment works well
7%
think this treatment is a hassle

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Side effects
The Vitamin D2 (Ergocalciferol) FDA package insert doesn’t have numbers about how common side effects are.
The Vitamin D3 (Cholecalciferol) FDA package insert doesn’t have numbers about how common side effects are.
Risks and warnings