Prescription or OTCLower-cost generic available

Vitamin D2

(Ergocalciferol)

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Raises Vitamin D levels.

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Prescription or OTCLower-cost generic available

Our pharmacists’ 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.

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

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Side effects 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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What to expect when you take Vitamin D2 (Ergocalciferol)

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Tips from our pharmacists
  • Call your doctor if you notice a metallic taste in your mouth, muscle or joint pain, headache or sleepiness.
  • Don't take other forms of vitamin D unless told to by your doctor.
  • Make sure to take at least 600 to 1200 mg of calcium per day.
  • Some forms of this medication are taken only once a week, others are taken once a day. Talk to your doctor or pharmacist if you're not sure.

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.

Means that some groups have a high risk of experiencing this side effect

Tips from pharmacists and people taking Vitamin D2 (Ergocalciferol)

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The FDA category for this medication is C. It is advised that you: Weigh risks vs. benefits
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Kidneys & liver
  • Risks from our pharmacists
  • 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.