Question: how often should you take vitamin d 50000 iu?
Answer: 50,000 IU capsules are available by prescription only. If your blood levels are exceptionally low, you may need higher doses that should be used under the direction of a healthcare provider. In patients with vitamin D levels less than 20 ng/mL, start with 50,000 IUs of vitamin D3 once a week for 6 – 8 weeks.