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
General health 889 221
Multiple sclerosis 696 152
Osteopenia 133 41
Fibromyalgia 130 34
Fatigue 129 38

Show all 169 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 Percentage
Severe 14
Moderate 15
Mild 34
None 832

Commonly reported side effects and conditions associated with Vitamin D

Side effect Patients Percentage
Nausea 5
Abdominal bloating 4
Depressed mood 3
Dizziness 3
Headaches 3
Diarrhea 2

Show all 37 reported side effects

Dosages

Based on patients currently taking Vitamin D

Dosage Patients Percentage
5000 intl units daily 54
2000 intl units daily 42
1000 intl units daily 36
400 units daily 30
5000 mg daily 18
1000 mg daily 17
50000 intl units weekly 16
4000 intl units daily 15
10000 intl units daily 15
2000 mg daily 13

See all 139 dosages

Why patients stopped taking Vitamin D

Multiple reasons could be selected

Reason Patients Percentage
Other 118
Course of treatment ended 92
Doctor's advice 65
Did not seem to work 38
Expense 27
Personal research 21
Side effects too severe 12
Change in health plan coverage 2
See all 334 patients who've stopped taking Vitamin D

Duration

Currently taking Vitamin D

Duration Patients Percentage
1 - 6 months 10
6 months - 1 year 14
1 - 2 years 37
2 - 5 years 120
5 - 10 years 186
10 years or more 123

Stopped taking Vitamin D

Duration Patients Percentage
Less than 1 month 28
1 - 6 months 101
6 months - 1 year 61
1 - 2 years 65
2 - 5 years 68
5 - 10 years 23
10 years or more 3
Adherence
Adherence Evaluations Percentage
Always 627
Usually 190
Sometimes 47
Never taken as prescribed 31
Burden
Burden Evaluations Percentage
Very hard to take 7
Somewhat hard to take 31
A little hard to take 91
Not at all hard to take 766
Cost per month
Cost per month Evaluations Percentage
$200+ 2
$100-199 1
$50-99 1
$25-49 22
< $25 466
Not specified 403
Last updated:

96 patient evaluations for Vitamin D

Jan 17, 2018 (Started Jun 30, 2012)

  • Effectiveness
    Can't tell (for multiple sclerosis)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 7000 mg Daily

Apr 23, 2015 (Started Jun 30, 2012)

  • Effectiveness
    Can't tell (for multiple sclerosis)
  • Side effects
    None
  • Adherence
    Usually
  • Burden
    Not at all hard to take
Dosage: 5000 intl units Daily

  • 0 helpful marks

Jan 17, 2018 (Started Dec 15, 2017)

  • Effectiveness
    Major (for multiple sclerosis)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 10000 intl units Daily
Advice & Tips: Neuro didn't prescribe this and I've taken it on my own through a lot of research. The biggest plus has been on my mental fitness while taking this drug-I don't feel like the brain fog has such control over me. I don't feel like I'm forgetting as much, either, as I had been. I really, really am happy with the results of taking Vitamin D. It took two to three weeks to notice any difference and I'm starting to notice more and more after about five weeks on it. Really excited about the progress with this!

  • 0 helpful marks

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
Last updated:
Showing 3 of 96 patient evaluations for Vitamin D