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 1,521 407
General health 855 211
multiple sclerosis 674 140
fibromyalgia 131 34
Fatigue 128 36
osteopenia 125 39

Show all 184 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 767

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 74
2,000 intl units daily 68
1,000 intl units daily 54
400 units daily 30
50,000 intl units weekly 30
4,000 intl units daily 29
1,000 mg daily 24
2,000 mg daily 22
5,000 mg daily 21
400 intl units daily 19

See all 206 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 305 patients who've stopped taking Vitamin D

Duration

Currently taking Vitamin D

Duration Patients
Less than 1 month 1
1 - 6 months 23
6 months - 1 year 58
1 - 2 years 96
2 - 5 years 186
5 - 10 years 366
10 years or more 64

Stopped taking Vitamin D

Duration Patients
Less than 1 month 23
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 586
Usually 175
Sometimes 41
Never taken as prescribed 28
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 712
Cost per month
Cost per month Evaluations
$200+ 2
$100-199 1
$50-99 1
$25-49 21
< $25 433
Not specified 372
Last updated:

97 patient evaluations for Vitamin D

JoeC
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JoeC
Sex: M
Data Quality: 3 stars
Relapse: Mild
Sensation: None
Overall: None
Cognition: none
Vision: moderate
Speech: none
Swallowing: none
Upper limb: moderate
Walking: moderate
I am: vg
I have:
MS

See JoeC's full Vitamin D history

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
margie99
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margie99
Sex: F
Data Quality: 3 stars
On
Mouth/throat: moderate
Arms: mild
Chest: mild
Legs: moderate
I am: g
I have:
PD

See margie99's full Vitamin D history

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
gagafor2
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gagafor2
Data Quality: 3 stars
  • Gender: F
  • Age: 65
PF Severity:
I am: g
I have:
idiopathic pulmonary fibrosis

See gagafor2's full Vitamin D history

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