Cyanocobalamin Side Effects
Medically reviewed by Drugs.com. Last updated on Dec 3, 2020.
For the Consumer
Applies to cyanocobalamin: nasal spray
Other dosage forms:
Side effects requiring immediate medical attention
Along with its needed effects, cyanocobalamin may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur while taking cyanocobalamin:
- lower back or side pain
- painful or difficult urination
Side effects not requiring immediate medical attention
Some side effects of cyanocobalamin may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.
Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
- Burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
- lack or loss of strength
- redness, swelling, or soreness of the tongue
For Healthcare Professionals
Applies to cyanocobalamin: compounding powder, injectable solution, intramuscular solution, nasal gel, nasal spray, oral tablet, oral tablet extended release, sublingual liquid, sublingual lozenge, sublingual tablet
Patients sensitized to the injectable product are often able to tolerate the oral route without problems.[Ref]
Frequency not reported: Severe dizziness, drowsiness, muscular paralysis, loss of consciousness[Ref]
Frequency not reported: Itching, transitory exanthema, acneiform eruptions, bullous eruptions[Ref]
Frequency not reported: Vision problems[Ref]
Frequency not reported: Feeling of swelling of entire body[Ref]
1. Cerner Multum, Inc. "Australian Product Information." O 0
2. "Product Information. Cyanocobalamin (cyanocobalamin)." West-Ward Pharmaceutical Corporation, Eatontown, NJ.
3. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
More about cyanocobalamin
- Side Effects
- During Pregnancy
- Dosage Information
- Drug Images
- Drug Interactions
- Compare Alternatives
- Pricing & Coupons
- 24 Reviews
- Drug class: vitamins
- Patient Information
- Cyanocobalamin injection
- Cyanocobalamin nasal
- Cyanocobalamin Intramuscular (Advanced Reading)
- Cyanocobalamin Nasal (Advanced Reading)
Related treatment guides
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.