What is Vitamin D?

Category: Supplements

Most popular types: Vitamin D Prescription NatureMade Vitamin D Calciferol 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 1026 243
Multiple sclerosis 771 166
Osteopenia 305 46
Fatigue 154 40
Fibromyalgia 139 34

Show all 192 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 17
Mild 42
None 891

Commonly reported side effects and conditions associated with Vitamin D

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

Show all 40 reported side effects

Dosages

Based on patients currently taking Vitamin D

Dosage Patients Percentage
2000 intl units daily 25
5000 intl units daily 23
1000 intl units daily 15
1000 mg daily 9
4000 intl units daily 8
400 units daily 7
50,000 intl units weekly 6
10000 intl units daily 6
400 intl units daily 5
1.25 mg weekly 4

See all 96 dosages

Why patients stopped taking Vitamin D

Multiple reasons could be selected

Reason Patients Percentage
Other 123
Course of treatment ended 94
Doctor's advice 68
Did not seem to work 41
Expense 32
Personal research 20
Side effects too severe 13
Change in health plan coverage 3
See all 349 patients who've stopped taking Vitamin D

Duration

Currently taking Vitamin D

Duration Patients Percentage
Less than 1 month 1
1 - 6 months 5
6 months - 1 year 4
1 - 2 years 5
2 - 5 years 43
5 - 10 years 78
10 years or more 87

Stopped taking Vitamin D

Duration Patients Percentage
Less than 1 month 27
1 - 6 months 104
6 months - 1 year 61
1 - 2 years 62
2 - 5 years 71
5 - 10 years 27
10 years or more 5
Adherence
Adherence Evaluations Percentage
Always 668
Usually 210
Sometimes 54
Never taken as prescribed 32
Burden
Burden Evaluations Percentage
Very hard to take 7
Somewhat hard to take 34
A little hard to take 103
Not at all hard to take 820
Cost per month
Cost per month Evaluations Percentage
$200+ 2
$100-199 1
$50-99 1
$25-49 24
< $25 475
Not specified 461

What people switch to and from

Patients started taking Vitamin D after stopping:

Treatment Patients Percentage
Calcium Magnesium and Vitamin D3 (GNC Calcium Plus with Magnesium and Vitamin D 3) 1
Dalfampridine (Ampyra) 1

Patients stopped taking Vitamin D and switched to:

Treatment Patients Percentage
Levothyroxine (Synthroid) 1
Last updated:

98 patient evaluations for Vitamin D

Sep 14, 2021 (Started )

  • Effectiveness
    Slight (for osteopenia)
  • Side effects
    Mild
  • Adherence
    Always
  • Burden
    Not at all hard to take

  • 0 helpful marks

Jan 25, 2021 (Started Nov 01, 2019)

  • Effectiveness
    Can't tell (for General health)
  • Effectiveness
    Can't tell (for multiple sclerosis)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 400 units Daily

  • 0 helpful marks

Jan 22, 2021 (Started Jul 01, 2015)

  • Effectiveness
    Can't tell (for vitamin D deficiency)
  • Side effects
    None
  • Adherence
    Usually
  • Burden
    Somewhat hard to take

Feb 15, 2019 (Started Jul 01, 2015)

  • Effectiveness
    Moderate (for vitamin D deficiency)
  • Side effects
    None
  • Adherence
    Usually
  • Burden
    Not at all hard to take

Feb 15, 2018 (Started Jul 01, 2015)

  • Effectiveness
    Major (for vitamin D deficiency)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1 capsule(s) Daily

  • 0 helpful marks
Last updated:
Showing 3 of 98 patient evaluations for Vitamin D