How much vitamin D can I take before it damages my organs?

It is pretty common practice to use a loading regimen of Vitamin D such as yours so that it does not take months to correct your vitamin D levels. These larger loading doses are typically administered for a short time (8 weeks) and do not cause toxicity. In general, the body can handle large doses of vitamin D, especially when there is a deficiency. The average dose for poor absorption of vitamin D is 10,000-50,000 IU daily, or this may be given as once per week dose.

If you are concerned about your vitamin D dose, you should follow up with your doctor. You can also monitor for signs of too much Vitamin D, which include unexplained nausea, vomiting, poor appetite, constipation, weakness, weight loss, mental status changes such as confusion and abnormal heart beats, if any of these symptoms occur, follow up with your doctor as soon as possible. Vitamin D does not interact with your Coumadin. Your INR level (blood thinning level) may be affected by many different things, including the amount of vitamin K in your diet or multivitamins. Vitamin K is found in green leafy vegetables such as spinach or kale, and also can be found in some daily multivitamins. Be sure to choose a daily vitamin that does NOT contain vitamin K. It can be hard to find the right dose of Coumadin, sometimes the INR (blood thinning level) will change without any explanation and the dose of Coumadin will need to be adjusted and monitored more closely. It is best to work closely with your doctor and keep him or her informed of any changes in your diet or medications, and always talk to your doctor before adding a new over-the-counter medication, vitamin, or herbal supplement.