Vitamin D2 comes from plant sources ... Symptoms may include: You might experience more severe side effects with higher doses—mainly weekly a 20,000 to 50,000 international unit (IU) dosing. The ...
There are two types of vitamin D supplements available for over-the-counter purchase (vitamin D2 and vitamin D3). Vitamin D3 is the type that most experts believe should be utilized in clinical ...
METHODS: An 89-year-old female resident of the Wisconsin Veterans Home, a skilled nursing facility in King, Wisconsin, was receiving long-term treatment with ergocalciferol (vitamin D2 ...