What is the brand name for Cyanocobalamin?
The brand name for Cyanocobalamin is OTC (Vitamin B12).
PTCB TOP 200 · #104
Cyanocobalamin
OTC (Vitamin B12)
Cyanocobalamin is the generic name for the brand-name drug OTC (Vitamin B12). It is a vitamin b12 used to treat B12 deficiency. On the PTCE Top 200 drug list, Cyanocobalamin ranks #104 and is one of the most frequently tested vitamins/minerals/supplements medications — commonly quizzed on its brand–generic pair, drug class, and key side effects.
| Generic name | Cyanocobalamin |
|---|---|
| Brand name(s) | OTC (Vitamin B12) |
| Drug class | Vitamin B12 |
| Class group | Vitamins/Minerals/Supplements |
| Common use | B12 deficiency |
| DEA schedule | Unscheduled |
| Availability | OTC/Rx |
What is Cyanocobalamin used for?
Vitamin B12 used to treat and prevent B12 deficiency (including pernicious anemia); available as oral, nasal, and injectable formulations.
What drug class is Cyanocobalamin?
Cyanocobalamin is a Vitamin B12 in the Vitamins/Minerals/Supplements group. Knowing the class is the fastest way to predict its uses, side effects, and the brand↔generic pairs the PTCE tests.
Common side effects of Cyanocobalamin
- arrow_rightDiarrhea (rare)
- arrow_rightItching/rash (rare)
- arrow_rightInjection‑site pain (if injectable)
- arrow_rightHeadache (rare)
Major interactions
- arrow_rightMetformin and acid‑suppressing therapy (PPIs/H2 blockers) can reduce B12 absorption over time
- arrow_rightChloramphenicol may blunt hematologic response to B12 therapy (rare/clinical monitoring)
- arrow_rightLarge doses of vitamin C taken at same time may reduce oral B12 availability (separate if advised)
Is Cyanocobalamin a controlled substance?
No. Cyanocobalamin is not a federally controlled substance (it is unscheduled by the DEA).
How to remember Cyanocobalamin (PTCE mnemonic)
B12 = 'BE-12 alert' for nerves + RBCs — cyanocobalamin. Deficiency → macrocytic anemia + neuropathy; pernicious anemia needs IM (no intrinsic factor).
lightbulb
PTCE exam tip
B12 deficiency causes anemia PLUS nerve symptoms — and long-term metformin or PPI use can deplete B12, a favorite drug–nutrient interaction.
Cyanocobalamin FAQ
What is Cyanocobalamin used for?
Cyanocobalamin is used to treat B12 deficiency. Vitamin B12 used to treat and prevent B12 deficiency (including pernicious anemia); available as oral, nasal, and injectable formulations.
What drug class is Cyanocobalamin?
Cyanocobalamin is a Vitamin B12 (Vitamins/Minerals/Supplements group).
Is Cyanocobalamin a controlled substance?
No. Cyanocobalamin is not a federally controlled substance (it is unscheduled by the DEA).
Study guides that cover Cyanocobalamin
Free, in-depth guides to the patterns behind this drug — no app needed.
Drug suffix cheat sheetthe suffix that gives away this drug's class
How to memorize the Top 200 drugsa method for locking in brand↔generic pairs
Failed the PTCB? The comeback planwhat to do if the first attempt fails
LASA (look-alike/sound-alike) drugsthe name pairs most often mixed upSee all PTCE study guides or browse the full Top 200 drug list.
Drill Cyanocobalamin the way the PTCE asks it
RxReflex turns the Top 200 drugs into fast flashcard rounds, a guided Learn path, pharmacy math, and 40+ cheat sheets. Free to start.
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Written and reviewed by the RxReflex Content Team. Educational use only — not medical advice. Verify clinical specifics with your pharmacist or a current label source such as DailyMed. RxReflex is not affiliated with or endorsed by the Pharmacy Technician Certification Board (PTCB).