Pharmacist Issues Warning to Anyone Who Takes Vitamin D: The Mistake You Should Avoid
Vitamin D is often called the “sunshine vitamin,” and it plays an important role in keeping your bones, muscles, and overall health in good condition.
But pharmacists have an important message for anyone who takes vitamin D supplements:
Do not assume that taking more vitamin D will give you more health benefits.
Vitamin D is essential, and supplements can be helpful when someone has a deficiency or has been advised to take them for a particular medical reason. However, taking excessive amounts—especially for a long time—can cause vitamin D toxicity.
The problem is not usually vitamin D from normal sunlight exposure. Vitamin D toxicity is almost always associated with excessive intake from supplements. Too much vitamin D can cause calcium to build up in the blood, potentially affecting the kidneys, heart, and other tissues.
Why Does Your Body Need Vitamin D?
Vitamin D helps your body absorb calcium and phosphorus, which are important for maintaining healthy bones and teeth.
It also plays a role in normal muscle function and other processes in the body.
You can obtain vitamin D from sunlight, certain foods, and dietary supplements. For people who don’t get enough vitamin D, supplementation may be useful.
The problem begins when people take high doses without knowing whether they actually need them.
The Important Number: 4,000 IU
For adults, 4,000 IU (100 micrograms) per day is the established tolerable upper intake level for vitamin D.
That does not mean 4,000 IU is the recommended amount everyone should take every day. It is an upper limit intended to indicate the highest daily intake unlikely to cause harm in most healthy adults when used chronically.
Some people with diagnosed vitamin D deficiency may temporarily receive higher doses under medical supervision.
For example, doctors may prescribe a high-dose “loading” course for several weeks before switching to a lower maintenance dose.
So if your doctor has prescribed a specific dose, don’t change it based on a general warning about supplements.
