Watch CBS News

How much Vitamin D is ideal for daily usage?

How much Vitamin D is ideal for daily usage?
How much Vitamin D is ideal for daily usage? 01:16

BOSTON – Dr. Mallika Marshall is answering your latest health questions. If you have a question, email her or message her on Facebook or X (formerly known as Twitter).

Jack in Lexington writes, "Maybe you can clarify the Vitamin D debate as to the ideal daily dosage. Some warn that taking too much can lead to toxicity. What is the best dosage and should it be Vitamin D3?"

How much supplemental Vitamin D you should take, if any, depends on your age, whether you're pregnant or lactating, your underlying health, how much sun exposure you get, and how much you consume in your diet. 

That's why it's important to ask your doctor whether you need to take it and if so how much. Most people who supplement take between 800 IU and 2,000 IU a day through either a multivitamin, Vitamin D capsule or a combination of both. 

Vitamin D3 is preferred because it absorbs better than D2. 

And yes, taking too much, like more than 4,000 IU a day, can cause problems such as nausea, weight loss, constipation, confusion, and kidney stones.

Dr. Mallika is offering her best advice, but as always, consult your personal doctor before making any decisions about your personal health.  

View CBS News In
CBS News App Open
Chrome Safari Continue
Be the first to know
Get browser notifications for breaking news, live events, and exclusive reporting.