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).

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Vitamin D deficiency 1,528 409
General health 854 210
multiple sclerosis 675 141
fibromyalgia 131 34
Fatigue 128 36
osteopenia 125 39

Show all 185 reasons taken


  • Major
  • Moderate
  • Slight
  • None
  • Can't tell

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations
Severe 14
Moderate 15
Mild 34
None 771

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 73
2,000 intl units daily 65
1,000 intl units daily 52
4,000 intl units daily 30
400 units daily 29
50,000 intl units weekly 29
1,000 mg daily 26
2,000 mg daily 22
5,000 mg daily 19
400 intl units daily 18

See all 199 dosages

Why patients stopped taking Vitamin D

Multiple reasons could be selected

Reason Patients
Other 104
Course of treatment ended 89
Doctor's advice 55
Did not seem to work 37
Expense 26
Personal research 18
Side effects too severe 11
Change in health plan coverage 1
See all 306 patients who've stopped taking Vitamin D

Duration

Currently taking Vitamin D

Duration Patients
Less than 1 month 3
1 - 6 months 15
6 months - 1 year 44
1 - 2 years 78
2 - 5 years 199
5 - 10 years 370
10 years or more 65

Stopped taking Vitamin D

Duration Patients
Less than 1 month 24
1 - 6 months 98
6 months - 1 year 61
1 - 2 years 57
2 - 5 years 55
5 - 10 years 14
10 years or more 1
Adherence
Adherence Evaluations
Always 589
Usually 175
Sometimes 41
Never taken as prescribed 29
Burden
Burden Evaluations
Very hard to take 7
Somewhat hard to take 28
A little hard to take 83
Not at all hard to take 716
Cost per month
Cost per month Evaluations
$200+ 2
$100-199 1
$50-99 1
$25-49 21
< $25 437
Not specified 372
Last updated:

97 patient evaluations for Vitamin D

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 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 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