What is Vitamin B12 Sublingual (cyanocobalamin)?

Category: Supplements

Most popular types: Nature's Bounty Vitamin B-12 Sublingual No Shot B-12 Spring Valley Sublingual B-12 Show all


See also: Dr. Mercola Sublingual B12

Vitamin B12 is also known as cyanocobalamin. Vitamin B12 is important for growth, cell reproduction, blood formation, and protein and tissue synthesis. It is used to treat vitamin B12 deficiency in people with pernicious anemia and other conditions.

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Fatigue 81 21
General health 59 19
Multiple sclerosis 9 1
Amyotrophic lateral sclerosis 6 0
Increase effect of another treatment 6 0

Show all 45 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

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

Side effect Patients
Acne breakout 1
Burning at time of dosage 1
Nausea if taken on empty stomach 1


Based on patients currently taking Vitamin B12 Sublingual (cyanocobalamin)

Dosage Patients
1 mg daily 13
2.5 mg daily 5
1,000 mcg daily 5
5 mg daily 4
500 mcg daily 2
1,000 daily 2
1,000 mg daily 2
5,000 mcg daily 2
1,000mcg/mL as needed 2
1 mg monthly 1

See all 25 dosages

Why patients stopped taking Vitamin B12 Sublingual (cyanocobalamin)

Multiple reasons could be selected

Reason Patients
Other 24
Did not seem to work 11
Doctor's advice 7
Expense 7
Course of treatment ended 4
Personal research 2
Side effects too severe 2
See all 51 patients who've stopped taking Vitamin B12 Sublingual (cyanocobalamin)


Currently taking Vitamin B12 Sublingual (cyanocobalamin)

Duration Patients
1 - 6 months 3
6 months - 1 year 1
1 - 2 years 6
2 - 5 years 11
5 - 10 years 22
10 years or more 10

Stopped taking Vitamin B12 Sublingual (cyanocobalamin)

Duration Patients
Less than 1 month 4
1 - 6 months 15
6 months - 1 year 16
1 - 2 years 10
2 - 5 years 5
10 years or more 1
Adherence Evaluations
Always 42
Usually 12
Sometimes 4
Never taken as prescribed 1
Burden Evaluations
Very hard to take 0
Somewhat hard to take 3
A little hard to take 8
Not at all hard to take 48
Cost per month
Cost per month Evaluations
$200+ 0
$100-199 0
$50-99 0
$25-49 1
< $25 40
Not specified 18
Last updated:

8 patient evaluations for Vitamin B12 Sublingual (cyanocobalamin)

Feb 4, 2014 (Started Feb 15, 2010)

  • Effectiveness
    Moderate (for mild depression)
  • Side effects
  • Adherence
  • Burden
    Somewhat hard to take
Advice & Tips: The sub-lingual tablets are nice as far as being able to take it the moment I remembered, without having the barrier of needing to get a glass of water.

Mar 17, 2012 (Started Feb 15, 2010)

  • Effectiveness
    Slight (for mild depression)
  • Side effects
  • Adherence
  • Burden
    Not at all hard to take
Dosage: 1000 mcg Daily

  • 0 helpful marks

Jan 15, 2014 (Started Feb 01, 2011)

  • Effectiveness
    None (for General health)
  • Effectiveness
    None (for fatigue)
  • Effectiveness
    None (for vitamin B12 deficiency)
  • Side effects
  • Adherence
  • Burden
    Not at all hard to take
Dosage: 2000 mcg Daily
Advice & Tips: Eat iron rich foods. Get plenty of fluids and rest. If you have low iron levels -- and -- low blood pressure keep legs elevated when possible. When sitting and standing for long periods blood tends to pool around your waist and upper thighs so it's important to help your body to regulate the blood flow. I learned this in Yoga and it was so interesting because I naturally have an inclination to put my feet up whenever possible. (In the car as a passenger I put them up on the dash, watching TV or relaxing reading a book or in social situations I look for anything with an ottoman or a couch where I can lay semi-reclined. (My friends know me well enough that it isn't a problem. If you are at a stranger's house or restaurant, put your feet on a rung of a chair not being used but I have also put my feet up on an unused chair at the table and explained to people (the waitress, people, etc.) why I need to do this. Also: I recumbent using "Vitalyte" for a great, low sugar, no colorants form adding to your water. It is in powdered form so you can control the amount you think is best for you.
Cost: < $25 monthly

  • 0 helpful marks

Sep 30, 2013 (Started Dec 23, 2010)

  • Effectiveness
    Slight (for gastric bypass)
  • Effectiveness
    Slight (for bariatric surgery)
  • Effectiveness
    Slight (for vitamin B12 deficiency)
  • Effectiveness
    Slight (for General health)
  • Effectiveness
    Slight (for fatigue)
  • Side effects
  • Adherence
  • Burden
    Not at all hard to take

  • 0 helpful marks
Last updated:
Showing 3 of 8 patient evaluations for Vitamin B12 Sublingual (cyanocobalamin)