What is Vitamin B12 Injection?

Category: Prescription Drugs

Most popular types: Medivitan

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Vitamin B-12 via intramuscular or deep subcutaneous injection is used to treat pernicious anemia; dietary deficiencies due to malabsorption diseases, inadequate secretion of intrinsic factor, and inadequate utilization; for increased requirements due to pregnancy.

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Vitamin B12 deficiency 149 72
Fatigue 147 67
Pernicious anemia 38 11
General health 35 14
Myalgic encephalomyelitis/chronic fatigue syndrome 24 13

Show all 48 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
0
Moderate
6
Mild
23
None
161

Commonly reported side effects and conditions associated with Vitamin B12 Injection

Side effect Patients
Injection site bruising 6
Injection site pain 4
Bruising 2
Jittery feeling 2
Burning pain at injection site 1
Diarrhea 1

Show all 20 reported side effects

Dosages

Based on patients currently taking Vitamin B12 Injection

Dosage Patients
1 mg monthly 25
1 mg every other week 8
1 mg weekly 7
1 other monthly 3
1 mg every 12 weeks 2
25 mg daily 2
1 mg every 3 months 1
1 mg every 8 weeks 1
1 mg every 3 weeks 1
3 mg monthly 1

See all 21 dosages

Why patients stopped taking Vitamin B12 Injection

Multiple reasons could be selected

Reason Patients
Course of treatment ended 43
Other 36
Did not seem to work 24
Doctor's advice 20
Expense 13
Change in health plan coverage 2
Personal research 1
See all 126 patients who've stopped taking Vitamin B12 Injection

Duration

Currently taking Vitamin B12 Injection

Duration Patients
1 - 6 months 4
6 months - 1 year 6
1 - 2 years 9
2 - 5 years 17
5 - 10 years 21
10 years or more 7

Stopped taking Vitamin B12 Injection

Duration Patients
Less than 1 month 22
1 - 6 months 32
6 months - 1 year 21
1 - 2 years 20
2 - 5 years 22
5 - 10 years 5
10 years or more 4
Adherence
Adherence Evaluations
Always 145
Usually 31
Sometimes 9
Never taken as prescribed 5
Burden
Burden Evaluations
Very hard to take 7
Somewhat hard to take 46
A little hard to take 69
Not at all hard to take 68
Cost per month
Cost per month Evaluations
$200+ 5
$100-199 4
$50-99 8
$25-49 15
< $25 82
Not specified 76

What people switch to and from

Patients started taking Vitamin B12 Injection after stopping:

Treatment Patients
Vitamin B12 Prescription (cyanocobalamin) 4
Lunasin (Lunasin Duke Virtual Trial) 1
Methotrexate injections (Metoject) 1
Prednisone (Deltasone) 1

Patients stopped taking Vitamin B12 Injection and switched to:

Treatment Patients
Vitamin B12 Prescription (cyanocobalamin) 2
Methotrexate injections (Metoject) 1
Vitamin B12 Sublingual (cyanocobalamin) (Nature's Bounty Vitamin B-12 Sublingual) 1
Last updated:

28 patient evaluations for Vitamin B12 Injection

Nov 4, 2017 (Started Jul 30, 2012)

  • Effectiveness
    Moderate (for vitamin B12 deficiency)
  • Effectiveness
    Moderate (for fatigue)
  • Side effects
    Mild (soreness)
  • Adherence
    Always
  • Burden
    A little hard to take
Dosage: 1 mg Monthly
Cost: < $25 monthly

Aug 10, 2017 (Started Jul 30, 2012)

  • Effectiveness
    Major (for vitamin B12 deficiency)
  • Effectiveness
    Major (for fatigue)
  • Side effects
    Mild (soreness)
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1 mg Monthly
Cost: < $25 monthly

May 25, 2017 (Started Jul 30, 2012)

  • Effectiveness
    Major (for vitamin B12 deficiency)
  • Effectiveness
    Major (for fatigue)
  • Side effects
    Mild (soreness)
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1 mg Monthly
Advice & Tips: Relax area where injection is placed, so it doesn't make the area sore.
Cost: < $25 monthly

Jan 17, 2017 (Started Jul 30, 2012)

  • Effectiveness
    Moderate (for vitamin B12 deficiency)
  • Effectiveness
    Moderate (for fatigue)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    A little hard to take
Dosage: 1 mg Monthly
Advice & Tips: Relax area where injection is placed, so it doesn't make the area sore.
Cost: < $25 monthly

Oct 10, 2016 (Started Jul 30, 2012)

  • Effectiveness
    Major (for vitamin B12 deficiency)
  • Effectiveness
    Major (for fatigue)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    A little hard to take
Dosage: 1 mg Monthly
Cost: < $25 monthly

Sep 14, 2016 (Started Jul 30, 2012)

  • Effectiveness
    Moderate (for vitamin B12 deficiency)
  • Effectiveness
    Moderate (for fatigue)
  • Side effects
    Mild (soreness)
  • Adherence
    Always
  • Burden
    A little hard to take
Dosage: 1 mg Monthly
Advice & Tips: No change
Cost: < $25 monthly

Jul 13, 2016 (Started Jul 30, 2012)

  • Effectiveness
    Moderate (for vitamin B12 deficiency)
  • Effectiveness
    Major (for fatigue)
  • Side effects
    Mild (soreness)
  • Adherence
    Always
  • Burden
    A little hard to take
Dosage: 1 mg Monthly
Advice & Tips: Helps with fatigue. Soreness, but relaxing the arm really helps.
Cost: < $25 monthly

Sep 16, 2015 (Started Jul 30, 2012)

  • Effectiveness
    Moderate (for vitamin B12 deficiency)
  • Effectiveness
    Major (for fatigue)
  • Side effects
    Mild (soreness)
  • Adherence
    Always
  • Burden
    A little hard to take
Dosage: 1 mg Monthly
Advice & Tips: Sometimes it gets sore even when relaxed
Cost: < $25 monthly

Jul 15, 2015 (Started Jul 30, 2012)

  • Effectiveness
    Major (for vitamin B12 deficiency)
  • Effectiveness
    Major (for fatigue)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    A little hard to take
Dosage: 1 mg Monthly
Advice & Tips: Relax area where injection is placed, so it doesn't make the area sore.
Cost: < $25 monthly

  • 0 helpful marks

Sep 26, 2016 (Started Oct 05, 2011)

  • Effectiveness
    Slight (for vitamin B12 deficiency)
  • Effectiveness
    Slight (for fatigue)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1 mg Monthly

  • 0 helpful marks

Oct 9, 2015 (Started Aug 01, 2015)

  • Effectiveness
    Slight (for vitamin B12 deficiency)
  • Effectiveness
    Slight (for fatigue)
  • Side effects
    None
  • Adherence
    Usually
  • Burden
    Somewhat hard to take
Dosage: 1 mg Monthly

  • 0 helpful marks
Last updated:
Showing 3 of 28 patient evaluations for Vitamin B12 Injection