What is Vitamin D3 (cholecalciferol)?

Category: Supplements

Most popular types: Spring Valley Vitamin D3 Nature's Way Vitamin D3 Kirkland Signature Vitamin D3 Show all

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See also: Calcet Petites Dual Calcium + Vitamin D3 Crampex Healtheries Fish Oil 1500 and Vitamin D3 Mebolic Nature Made Triple Flex with D3

Vitamin D3 is the form of vitamin D called cholecalciferol. Cholecalciferol is the most widely known of the vitamin D series and is a fat soluble vitamin that is stored to some degree in the body. It is used as a dietary supplement, for the treatment of vitamin D deficiency, or to prevent a deficiency.

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Vitamin D deficiency 621 199
Multiple sclerosis 299 100
General health 187 59
Fibromyalgia 45 15
Support immune health 31 9

Show all 130 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 8
Moderate 7
Mild 7
None 458

Commonly reported side effects and conditions associated with Vitamin D3 (cholecalciferol)

Side effect Patients
Diarrhea 2
Dizziness 2
Fatigue 2
Itchy skin 2
Nausea 2
Abdominal bloating 1

Show all 19 reported side effects

Dosages

Based on patients currently taking Vitamin D3 (cholecalciferol)

Dosage Patients
5,000 unt daily 68
5,000 intl units daily 57
2,000 intl units daily 55
2,000 unt daily 47
1,000 intl units daily 39
1,000 unt daily 34
4,000 intl units daily 21
10,000 intl units daily 20
50,000 unt weekly 19
3,000 intl units daily 10

See all 111 dosages

Why patients stopped taking Vitamin D3 (cholecalciferol)

Multiple reasons could be selected

Reason Patients
Other 46
Course of treatment ended 26
Doctor's advice 19
Did not seem to work 15
Side effects too severe 11
Personal research 9
Expense 6
Change in health plan coverage 1
See all 125 patients who've stopped taking Vitamin D3 (cholecalciferol)

Duration

Currently taking Vitamin D3 (cholecalciferol)

Duration Patients
Less than 1 month 1
1 - 6 months 11
6 months - 1 year 36
1 - 2 years 69
2 - 5 years 169
5 - 10 years 235
10 years or more 50

Stopped taking Vitamin D3 (cholecalciferol)

Duration Patients
Less than 1 month 12
1 - 6 months 41
6 months - 1 year 25
1 - 2 years 20
2 - 5 years 26
5 - 10 years 2
Adherence
Adherence Evaluations
Always 368
Usually 86
Sometimes 22
Never taken as prescribed 4
Burden
Burden Evaluations
Very hard to take 1
Somewhat hard to take 12
A little hard to take 45
Not at all hard to take 422
Cost per month
Cost per month Evaluations
$200+ 0
$100-199 0
$50-99 0
$25-49 15
< $25 243
Not specified 222
Last updated:

54 patient evaluations for Vitamin D3 (cholecalciferol)

Jan 21, 2018 (Started Nov 30, 2011)

  • Effectiveness
    Major (for vitamin D deficiency)
  • Side effects
    Moderate (itchy skin)
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 5000 intl units Daily
Cost: < $25 monthly

Jul 4, 2013 (Started Nov 30, 2011)

  • Effectiveness
    Moderate (for vitamin D deficiency)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 5000 intl units Daily
Advice & Tips: I put it in my pill dispenser
Cost: < $25 monthly

Apr 11, 2012 (Started Nov 30, 2011)

  • Effectiveness
    Moderate (for vitamin D deficiency)
  • Side effects
    None
  • Adherence
    Usually
  • Burden
    A little hard to take
Dosage: 50000 intl units Weekly
Advice & Tips: The biggest challenges to taking the Vitamin D weekly are getting the capsules and remembering to take it once per week, as opposed to daily like my other medicines.
Cost: < $25 monthly

  • 0 helpful marks

Jul 24, 2017 (Started Jun 30, 2012)

  • Effectiveness
    Can't tell (for multiple sclerosis)
  • Effectiveness
    Can't tell (for vitamin D deficiency)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 2,000 unt Daily

  • 0 helpful marks

Jul 21, 2017 (Started Nov 10, 2015)

  • Effectiveness
    Can't tell (for vitamin D deficiency)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 800 intl units Daily
Cost: < $25 monthly

  • 0 helpful marks
Last updated:
Showing 3 of 54 patient evaluations for Vitamin D3 (cholecalciferol)