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What is Vitamin D?

Category: Supplements

Most popular types: Vitamin D Prescription NatureMade Vitamin D CVS Vitamin D Show all

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Vitamin D is a fat-soluble vitamin that was isolated in 1930 and named calciferol. Since then more metabolites have been found and the two major forms of this vitamin are now known to be vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol).

See patients taking Vitamin D

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Vitamin D deficiency 1,536 416
General health 854 210
Multiple sclerosis 675 141
Fibromyalgia 131 34
Fatigue 128 36
Osteopenia 126 42

Show all 186 reasons taken

  • Major
  • Moderate
  • Slight
  • None
  • Can't tell
See all 4,691 patients that have taken Vitamin D

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations
Severe 14
Moderate 15
Mild 34
None 782

Commonly reported side effects and conditions associated with Vitamin D

Side effect Patients
Nausea 5
Abdominal bloating 4
Headaches 4
Dizziness 3
Upset stomach 3
Depressed mood 2

Show all 42 reported side effects

Dosages

Based on patients currently taking Vitamin D

Dosage Patients
5,000 intl units daily 69
2,000 intl units daily 63
1,000 intl units daily 55
400 units daily 33
1,000 mg daily 25
4,000 intl units daily 25
50,000 intl units weekly 24
2,000 mg daily 20
5,000 mg daily 19
400 intl units daily 15

See all 197 dosages

Why patients stopped taking Vitamin D

Multiple reasons could be selected

Reason Patients
Other 104
Course of treatment ended 90
Doctor's advice 56
Did not seem to work 37
Expense 27
Personal research 18
Side effects too severe 11
Change in health plan coverage 1
See all 309 patients who've stopped taking Vitamin D

Duration

Currently taking Vitamin D

Duration Patients
Less than 1 month 2
1 - 6 months 14
6 months - 1 year 38
1 - 2 years 75
2 - 5 years 195
5 - 10 years 352
10 years or more 67

Stopped taking Vitamin D

Duration Patients
Less than 1 month 24
1 - 6 months 99
6 months - 1 year 63
1 - 2 years 57
2 - 5 years 55
5 - 10 years 14
10 years or more 1
Adherence
Adherence Evaluations
Always 597
Usually 176
Sometimes 43
Never taken as prescribed 29
Burden
Burden Evaluations
Very hard to take 7
Somewhat hard to take 28
A little hard to take 85
Not at all hard to take 725
Cost per month
Cost per month Evaluations
$200+ 2
$100-199 1
$50-99 1
$25-49 21
< $25 444
Not specified 376
Last updated:

97 patient evaluations for Vitamin D

Sort by: Most recent

Aug 10, 2017 (Started Jan 15, 2011)

  • Effectiveness
    Can’t tell (for Parkinson's disease)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 5000 mcg Weekly
Cost: < $25 monthly

May 25, 2017 (Started Jan 15, 2011)

  • Effectiveness
    Can’t tell (for Parkinson's disease)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 5000 mcg Weekly

Jan 17, 2017 (Started Jan 15, 2011)

  • Effectiveness
    None (for Parkinson's disease)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 5000 mcg Weekly

Oct 10, 2016 (Started Jan 15, 2011)

  • Effectiveness
    Slight (for Parkinson's disease)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 5000 mcg Weekly
  • 0 helpful marks

May 26, 2017 (Started Jul 01, 2009)

  • Effectiveness
    Can’t tell (for General health)
  • Side effects
    None
  • Adherence
    Never taken as prescribed
  • Burden
    Not at all hard to take
Dosage: 3000 intl units Daily

Jul 27, 2010 (Started Jul 01, 2009)

  • Effectiveness
    None (for General health)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1000 intl units Daily
  • 0 helpful marks

May 23, 2017 (Started Nov 15, 2015)

  • Effectiveness
    Slight (for General health)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 5000 mg Daily

Jan 28, 2017 (Started Nov 15, 2015)

  • Effectiveness
    Can’t tell (for General health)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 5000 mg Daily
  • 0 helpful marks
Last updated:
Showing 3 of 97 patient evaluations for Vitamin D