The case against ergocalciferol (vitamin D2) as a vitamin supplement1,2

Vitamin D

1979 • 3,814 citations

Vitamin D₃and Calcium to Prevent Hip Fractures in Elderly Women

1992 • 2,963 citations

Overview of general physiologic features and functions of vitamin D

2004 • 2,231 citations

Fracture Prevention With Vitamin D Supplementation

2005 • 1,535 citations

Vitamin D₂Is Much Less Effective than Vitamin D₃in Humans

2004 • 1,096 citations

Effects of Vitamin D and Calcium Supplementation on Falls: A Randomized Controlled Trial

2003 • 989 citations

Genetic evidence that the human CYP2R1 enzyme is a key vitamin D 25-hydroxylase

2004 • 695 citations

Evidence that vitamin D3 increases serum 25-hydroxyvitamin D more efficiently than does vitamin D2

1998 • 654 citations

Efficacy and safety of vitamin D3 intake exceeding the lowest observed adverse effect level

2001 • 623 citations

Prevention of bone loss by vitamin D supplementation in elderly women: a randomized double-blind trial.

1995 • 457 citations

De-orphanization of Cytochrome P450 2R1

2003 • 376 citations

Vitamin D. Chemical, Biochemical and Clinical Update

1985 • 325 citations

Should Older People in Residential Care Receive Vitamin D to Prevent Falls? Results of a Randomized Trial

2005 • 306 citations

STANDING COMMITTEE ON THE SCIENTIFIC EVALUATION OF DIETARY REFERENCE INTAKES

1998 • 210 citations

Vitamin D supplementation and the prevention of fractures and falls: results of a randomised trial in elderly people in residential accommodation

2006 • 187 citations

Prospective study of vitamin D supplementation and rickets in China

1992 • 162 citations

Comparison of equilibrium and disequilibrium assay conditions for ergocalciferol, cholecalciferol and their major metabolites

1984 • 137 citations

Discrimination in the metabolism of orally dosed ergocalciferol and cholecalciferol by the pig, rat and chick

1982 • 107 citations

Serum concentration of vitamin D metabolites during treatment with vitamin D2 and D3 in normal premenopausal women.

1986 • 103 citations

Vitamin D Bioavailability: Serum 25-Hydroxyvitamin D Levels in Man after Oral, Subcutaneous, Intramuscular, and Intravenous Vitamin D Administration*

1979 • 102 citations

Plasma Vitamin D and 25OHD Responses of Young and Old Men to Supplementation with Vitamin D₃

2002 • 102 citations

Vitamin D supplementation and bone mineral density in early postmenopausal women

2003 • 98 citations

Vitamin D Metabolism

1984 • 97 citations

Effect of Vitamins D 2 and D 3 Supplement Use on Serum 25OHD Concentration in Elderly Women in Summer and Winter

2004 • 87 citations

A prospective trial of the effect of vitamin D supplementation on metacarpal bone loss in elderly women

1985 • 74 citations

THE THERAPY OF RICKETS

1940 • 72 citations

24-Hydroxylation of 1,25-dihydroxyergocalciferol. An unambiguous deactivation process.

1986 • 69 citations

25-Hydroxylase activity in subcellular fractions from human liver. Evidence for different rates of mitochondrial hydroxylation of vitamin D₂and D₃

1986 • 64 citations

Unique 24-Hydroxylated Metabolites Represent a Significant Pathway of Metabolism of Vitamin D₂in Humans: 24-Hydroxyvitamin D₂and 1,24-Dihydroxyvitamin D₂Detectable in Human Serum¹

1998 • 62 citations

Differences in Mineral Metabolism among Nonhuman Primates Receiving Diets with Only Vitamin D₃or Only Vitamin D₂*

1989 • 62 citations

Vitamin D, chemical, biochemical and clinical update

1987 • 59 citations

Stability of Solid Drugs: Degradation of Ergocalciferol (Vitamin D2) and Cholecalciferol (Vitamin D3) at High Humidities and Elevated Temperatures

1980 • 58 citations

Vitamin D Metabolism

2005 • 57 citations

1.alpha.-Hydroxylation of 24-hydroxyvitamin D2 represents a minor physiological pathway for the activation of vitamin D2 in mammals

1990 • 54 citations

Isolation and identification of 24-hydroxyvitamin D2 and 24,25-dihydroxyvitamin D2

1980 • 52 citations

British Pharmacopoeia 1980.

1982 • 49 citations

Unique 24-Hydroxylated Metabolites Represent a Significant Pathway of Metabolism of Vitamin D2 in Humans: 24-Hydroxyvitamin D2 and 1,24-Dihydroxyvitamin D2 Detectable in Human Serum

1998 • 46 citations

Vitamin D2 dose required to rapidly increase 25OHD levels in osteoporotic women

2006 • 43 citations

Problems Relating to the Definition of an International Unit for Vitamin D and Its Metabolites

1972 • 42 citations

Plasma 25-Hydroxyvitamin D Responses of Younger and Older Men to Three Weeks of Supplementation with 1800 IU/day of Vitamin D

1999 • 42 citations

Effect of vitamin D2 and vitamin D3 on the serum concentrations of 1,25(OH)2D2, and 1,25(OH)2D3 in normal subjects

1987 • 41 citations

Evidence that Discrimination against Ergocalciferol by the Chick is the Result of Enhanced Metabolic Clearance Rates for its Mono- and Dihydroxylated Metabolites

1988 • 40 citations

Comparison of the relative effects of 1,24-dihydroxyvitamin D2 [1,24-(OH)2D2], 1,24-dihydroxyvitamin D3 [1,24-(OH)2D3], and 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] on selected vitamin D-regulated events in the rat

2000 • 29 citations

NEWER ASPECTS OF THE THERAPEUTICS OF VIOSTEROL (IRRADIATED ERGOSTEROL)

1930 • 27 citations

CHEMICAL AND BIOLOGICAL STABILITY OF CRYSTALLINE VITAMINS D2 AND D3 AND THEIR DERIVATIVES

1943 • 23 citations

Zur Dosierung des Vigantol D₃bei Frühgeborenen

1954 • 6 citations