Vitamin D2 is safe for vegans and vegetarians since it is plant derived. Vitamin D3 is not, however, because these supplements are derived from the fat from lamb’s wool. [3] X Research source
Infants from birth to 12 months need 400 IU (10 mcg) Those who are one to 70 years old need 600 IU (15 mcg) Individuals over 70 years old need 800 IU (20 mcg) Women who are breastfeeding or pregnant need 600 IU (15 mcg) Remember that those that are deficient in Vitamin D3 are more likely to need higher doses to build levels up. Once they are consistently having good D3 blood readings, they may be able to switch to a lower maintenance dose.
Most doctors currently recommend 1000 IU of vitamin D3 per day to ensure that enough vitamin D is absorbed. The Linus Pauling Institute, one of the leading research centers in vitamins, minerals, and nutrients, recommends 2000 IU of Vitamin D3 a day. [5] X Trustworthy Source Oregon State University Linus Pauling Institute Research center dedicated to promoting optimal health through cutting-edge nutrition research and public outreach Go to source If you have certain conditions that might benefit from vitamin D3, your doctor may suggest a higher dosage. Always follow your doctor’s instructions when it comes to increased or decreased dosage. [6] X Research source
It is recommended that you take your vitamin D3 with a meal.
Your levels may still be low after taking supplements for awhile. Your doctor may increase your supplement dose to help increase your levels. He or she may also check for issues that might be blocking your absorption of vitamin D3. This testing should occur at least once a year. [7] X Trustworthy Source Cleveland Clinic Educational website from one of the world’s leading hospitals Go to source
Vitamin D also prevents softening of the bones, brittle bones, and rickets in children. [8] X Research source
Elderly adults Infants Those with darker-toned skin Those with limited to no exposure to the sun Anyone with conditions that limit fat absorption, such as inflammatory bowel disease (IBD) People with excess weight or who are obese Those who have undergone gastric bypass surgery
Having too much vitamin D can also cause health issues. It can cause weight loss, anorexia, and a dangerously high heart rate. [11] X Research source
Some medications decrease the absorption of the vitamin D in your body, which include Questran, Xenical, and Colestid. Ask your doctor about possible interactions with these medications. As a general rule, make sure you wait at least two hours after you take these medicines to take your vitamin D supplements. [13] X Trustworthy Source Oregon State University Linus Pauling Institute Research center dedicated to promoting optimal health through cutting-edge nutrition research and public outreach Go to source
