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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
General health 871 216
Multiple sclerosis 692 152
Osteopenia 133 47
Fatigue 130 37
Fibromyalgia 130 34

Show all 163 reasons taken

  • Major
  • Moderate
  • Slight
  • None
  • Can't tell
See all 4,979 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 16
Mild 34
None 827

Commonly reported side effects and conditions associated with Vitamin D

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

Show all 36 reported side effects

Dosages

Based on patients currently taking Vitamin D

Dosage Patients
5,000 intl units daily 92
2,000 intl units daily 67
1,000 intl units daily 66
400 units daily 36
4,000 intl units daily 31
5,000 mg daily 28
1,000 mg daily 25
2,000 mg daily 25
400 intl units daily 21
50,000 intl units weekly 19

See all 205 dosages

Why patients stopped taking Vitamin D

Multiple reasons could be selected

Reason Patients
Other 114
Course of treatment ended 92
Doctor's advice 64
Did not seem to work 39
Expense 29
Personal research 20
Side effects too severe 12
Change in health plan coverage 2
See all 335 patients who've stopped taking Vitamin D

Duration

Currently taking Vitamin D

Duration Patients
1 - 6 months 20
6 months - 1 year 23
1 - 2 years 63
2 - 5 years 209
5 - 10 years 402
10 years or more 145

Stopped taking Vitamin D

Duration Patients
Less than 1 month 29
1 - 6 months 101
6 months - 1 year 61
1 - 2 years 64
2 - 5 years 61
5 - 10 years 21
10 years or more 2
Adherence
Adherence Evaluations
Always 625
Usually 190
Sometimes 46
Never taken as prescribed 30
Burden
Burden Evaluations
Very hard to take 7
Somewhat hard to take 32
A little hard to take 91
Not at all hard to take 761
Cost per month
Cost per month Evaluations
$200+ 2
$100-199 1
$50-99 1
$25-49 22
< $25 469
Not specified 396
Last updated:

98 patient evaluations for Vitamin D

Sort by: Most recent

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 98 patient evaluations for Vitamin D