Vitamin D2

(Ergocalciferol)

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Raises Vitamin D levels.

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Our bottom line

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.

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    $14.23
Quick facts about Vitamin D2
  • Drug class: Musculoskeletal
  • Rx status: Prescription or OTC
  • Generic status: Lower-cost generic available (ergocalciferol)

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.
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Downsides

  • Your body doesn't absorb Vitamin D2 as well as Vitamin D3.
How it works

Vitamin D2 (Ergocalciferol) is a form of Vitamin D. It raises Vitamin D levels in your blood. This in turn raises calcium levels in your blood by helping you absorb more calcium from food in your intestine.

Quick facts about Vitamin D2
  • Drug class: Musculoskeletal
  • Rx status: Prescription or OTC
  • Generic status: Lower-cost generic available (ergocalciferol)
Tried Vitamin D2? Write a review!

Prices and coupons

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Side effect rates for Vitamin D2 (Ergocalciferol)

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These are side effects of Vitamin D2 (Ergocalciferol) reported to the FDA by people taking it, and by doctors and pharmacists.
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Risks and Warnings for Vitamin D2 (Ergocalciferol)

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  • People on Vitamin D2 (Ergocalciferol) who take more than the recommended dose can have high calcium in the blood, which can be dangerous in the kidneys. If you notice a metallic taste in your mouth, muscle or joint pain or a bad headache, talk to your doctor. Keep the amount of calcium you eat the same from day to day.

Common concerns from people taking Vitamin D2 (Ergocalciferol)

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Pregnancy

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

Tip: Always talk with your doctor before you take any medication while pregnant.
FDA pregnancy category for Vitamin D2
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Pain
  • Call your doctor if you notice a metallic taste in your mouth, muscle or joint pain, headache or sleepiness.