Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Vitamin B12 deficiency 188 61
General health 176 84
Fatigue 58 27
Fibromyalgia 20 8
Pernicious anemia 20 7

Show all 91 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 1
Moderate 5
Mild 6
None 211

Commonly reported side effects and conditions associated with Vitamin B12 (cyanocobalamin)

Side effect Patients
Bruising 1
Diarrhea 1
Dizziness with nausea 1
Fatigue 1
Heavy sensation 1
Injection site pain 1

Show all 13 reported side effects

Dosages

Based on patients currently taking Vitamin B12 (cyanocobalamin)

Dosage Patients
1,000 mcg daily 34
1 mg daily 15
500 mcg daily 13
1 mg monthly 8
1 mg weekly 5
1 mg twice daily 5
2.5 mg daily 5
1,000 mg daily 4
2,000 mcg daily 4
2,500 mcg daily 4

See all 56 dosages

Why patients stopped taking Vitamin B12 (cyanocobalamin)

Multiple reasons could be selected

Reason Patients
Other 39
Doctor's advice 26
Did not seem to work 22
Course of treatment ended 18
Expense 12
Personal research 4
Change in health plan coverage 1
Side effects too severe 1
See all 102 patients who've stopped taking Vitamin B12 (cyanocobalamin)

Duration

Currently taking Vitamin B12 (cyanocobalamin)

Duration Patients
Less than 1 month 2
1 - 6 months 12
6 months - 1 year 17
1 - 2 years 20
2 - 5 years 44
5 - 10 years 50
10 years or more 17

Stopped taking Vitamin B12 (cyanocobalamin)

Duration Patients
Less than 1 month 11
1 - 6 months 32
6 months - 1 year 19
1 - 2 years 20
2 - 5 years 14
5 - 10 years 6
10 years or more 1
Adherence
Adherence Evaluations
Always 166
Usually 32
Sometimes 10
Never taken as prescribed 15
Burden
Burden Evaluations
Very hard to take 3
Somewhat hard to take 8
A little hard to take 35
Not at all hard to take 177
Cost per month
Cost per month Evaluations
$200+ 0
$100-199 0
$50-99 0
$25-49 2
< $25 135
Not specified 86
Last updated:

27 patient evaluations for Vitamin B12 (cyanocobalamin)

Oct 20, 2017 (Started Oct 20, 2017)

  • Effectiveness
    Slight (for myalgic encephalomyelitis/chronic fatigue syndrome)
  • Effectiveness
    Moderate (for General health)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1 other Twice daily
Advice & Tips: First report. Might be placebo effect. Taking to improve/prevent fatigue/malaise.
Cost: < $25 monthly

  • 0 helpful marks

Oct 7, 2017 (Started Jun 15, 2014)

  • Effectiveness
    Can’t tell (for vitamin B12 deficiency)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1 tablet(s) Daily

  • 0 helpful marks

Dec 20, 2016 (Started Jun 28, 2013)

  • Effectiveness
    Major (for vitamin B12 deficiency)
  • Effectiveness
    Can’t tell (for loss of energy)
  • Effectiveness
    Can’t tell (for General health)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1000 mcg Daily
Advice & Tips: The amount of Vitamin B12 in my blood has improved GREATLY.
Cost: < $25 monthly

Feb 24, 2015 (Started Jun 28, 2013)

  • Effectiveness
    Slight (for loss of energy)
  • Effectiveness
    Can’t tell (for General health)
  • Effectiveness
    Major (for vitamin B12 deficiency)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1000 mcg Daily
Cost: < $25 monthly

  • 0 helpful marks
Last updated:
Showing 3 of 27 patient evaluations for Vitamin B12 (cyanocobalamin)