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What is Vitamin D?

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 & Efficacy

Reasons and Efficacy
Purpose # of patients
# of patients with evaluations Efficacy
Major
Moderate
Slight
None
Can’t tell
Vitamin D deficiency 648 110 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none Efficacy_cant_tell
General health 597 74 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none Efficacy_cant_tell
MS (Multiple Sclerosis) 446 55 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none Efficacy_cant_tell
Other 135 14 Efficacy_major Efficacy_moderate Efficacy_cant_tell
Fatigue 107 18 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none Efficacy_cant_tell
Fibromyalgia 102 15 Efficacy_moderate Efficacy_slight Efficacy_none Efficacy_cant_tell

See all 2760 patients currently taking Vitamin D

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Reported Side Effects

Side effects as an overall problem

Severe
 6
Moderate
 5
Mild
 9
None
 284

Commonly reported side effects, conditions, and hospitalizations associated with Vitamin D

Nausea 2
Dizziness 1
Dry mouth (xerostomia) 1
Elevated liver enzymes 1
Muscle pain 1
Sweating excessive 1
See all 17 reported side effects ▼ See top 6 reported side effects ▲

Reported Dosages

Frequently reported dosages based on patients currently taking Vitamin D. See all 275 dosages ►

  daily 400 intl units daily 800 intl units daily 1,000 mg daily 1,000 intl units daily 2,000 intl units daily 3,000 intl units daily 4,000 intl units daily 5,000 intl units daily 50,000 intl units weekly
  71 Number of Patients: 71 168 Number of Patients: 168 62 Number of Patients: 62 78 Number of Patients: 78 461 Number of Patients: 461 377 Number of Patients: 377 57 Number of Patients: 57 149 Number of Patients: 149 165 Number of Patients: 165 114 Number of Patients: 114  

Reported Stop Reasons

Why Patients Stopped Taking Vitamin D (multiple reasons could be selected)
Reason # Patients Percentage of patients
Other 58   Other: 36%
Course of treatment ended 32   Course of treatment ended: 20%
Doctor's advice 26   Doctor's advice: 16%
Did not seem to work 24   Did not seem to work: 15%
Expense 13   Expense: 8%
Side effects too severe 11   Side effects too severe: 7%
Not indicated 7   Not indicated: 4%
Personal research 5   Personal research: 3%

See all 153 patients who’ve stopped taking Vitamin D

Reported Duration See details about how long patients take this treatment ▼

Currently Taking Vitamin D

A bar graph

0-1 month 1-3 months 3-6 months 6 months-1year 1-2 years 2 years or more

Stopped Taking Vitamin D

A bar graph

0-1 month 1-3 months 3-6 months 6 months-1year 1-2 years 2 years or more

Reported Adherence, Burden & Cost See details from patient evaluations ▼

Adherence

Taking treatment as prescribed

Adherence of Vitamin D

Always
 216 71%
Usually
 67 22%
Sometimes
 15 5%
Never
 6 2%

Burden

Difficulty being on treatment

Burden of Vitamin D

Very
 3 1%
Somewhat
 12 4%
A little
 29 10%
Not at all
 260 86%

Cost

Paid out of pocket

Cost of Vitamin D

$200+
 1 1%
$100-199
 0 0%
$50-99
 1 1%
$25-49
 5 3%
< $25
 169 96%

See more information, including instructions, precautions, side effects, and interactions.

Report created on February 12, 2012.