Journal of Evidence-Based Complementary & Alternative Medicine December 4, 2012 2156587212467460
Philip J. Gregory, PharmD, FACN1⇓, Darren J. Hein, PharmD1,Andrew M. Abe, PharmD1, Zara Risoldi Cochrane, PharmD1, Amy F. Wilson, PharmD1,
1 Creighton University, Omaha, NE, USA
Philip J. Gregory, PharmD, FACN, Center for Drug Information & Evidence-Based Practice, School of Pharmacy & Health Professions, Creighton University, 2500 California Plaza, Omaha, NE 68178, USA Email: pgregory at creighton.edu
Supplementation with vitamin D has become increasingly popular over the past decade, and numerous organizations have developed recommendations for the appropriate intake of vitamin D. Vitamin D supplements come in a variety of formulations and strengths and vary in their directions for use. This study was designed to compare vitamin D label dosing information with the recommendations in North American guidelines. A systematic search was conducted to identify 62 single-ingredient vitamin D products of which 1000 IU was the most common strength. Assessment of North American guidelines found recommended vitamin D dosing to range from 400 to 1000 IU daily, depending on age.
Twenty-four (39%) of the products recommended a maximum dose within the range of 400 to 1000 IU daily.
Thirty-eight (61%) and 19 (31%) products recommended maximum doses more than 1000 IU daily and 2000 IU daily, respectively. Labeled dosing recommendations of commercially available vitamin D supplements are largely inconsistent with North American recommendations.
Received October 11, 2012.
- Overview How Much vitamin D
- Vitamin D Recommendations around the world - IU and ng
- Vitamin D researchers are taking 2000 to 10000 IU – July 2010
- 1500 IU vitamin D minimum - 10,000 IU is safe – review April 2012
- 3 % of elderly took more than 2000 IU in 2008
- Back in 2008 Scientists called for 2,000 IU
- 10,000 Finnish children got 2000 IU chart
- 1950's-1964 Finnish children got 4000+ IU chart
- 1800 to 4000 IU vitamin D to get 30 to-44 ng no risk osteo - July 2010.pdf file
- Linus Pauling Institute 2000 IU Dec 2011
- Nursing homes residents should have at least 2000 IU
- Patients older than 65 needed 5,000 IU vitamin D – May 2010
- 2500 to 4000 IU would decrease specific disease rates - April 2010
- Elderly need 2000 to 3000 IU
- Dr Norman 2000 to 4000 IU
- 85% achieved 20 ng with avg of 3300 IU of vitamin D - oral and injection Aug 2012
- Dr. Garland and Heaney 4000 IU
- 7100 IU (50000 weekly) got most women to 30 ng of vitamin D - Aug 2012
- How often should I take 50000 IU (1.25 mg) of vitamin D
several times a week, several times a month, monthly . . .
- Overview Vitamin D Dose-Response
- All items in category How Much Vitamin D
338 items30 percent of vitamin D sold now has more than 2000 IU - Dec 2012 3080 visitors, last modified 27 Feb, 2017,