Level of 25-OH Vitamin D (total):

• 0 – 10 ng/ml: – 60,000 IU twice a week for 4 weeks followed by once a week for 6 weeks for levels to reach above 30 ng/ml
• 10 – 20 ng/ml: – 60,000 IU twice a week for 3 weeks followed by once a week for 6 weeks for levels to reach above 30 ng/ml
• 20 – 26 ng/ml: – 60,000 IU once a week for 10 weeks for levels to reach above 30 ng/ml
• 26 – 30 ng/ml: – 60,000 IU once a week for 2 weeks for levels to reach above 30 ng/ml
• 30 – 40 ng/ml: – 60,000 IU once every 4 – 6 weeks lifelong or 2000 IU daily

In case lower dosages are taken, they can be calculated on the same basis, ie 60,000 IU per month is equal to 2000 IU / day or 15,000 IU per week etc