Correct Answer: A
Cyanocobalamin (Vitamin B12)is used to treatpernicious anemia, a condition caused byVitamin B12 deficiencydue to the body's inability to absorb it properly.
* Pernicious anemiais an autoimmune disorder where the stomach does not produceintrinsic factor, a protein needed for Vitamin B12 absorption.
* Symptoms includefatigue, weakness, neurological issues (numbness, tingling), and megaloblastic anemia.
* Cyanocobalamin is given viaIM injection or high-dose oral supplementation.
* (A) Pernicious anemia#Correct - Cyanocobalamin is the primary treatment.
* (B) Alcohol withdrawal#Incorrect - Thiamine (Vitamin B1) is used for alcohol withdrawal, not cyanocobalamin.
* (C) Hypothyroidism#Incorrect - Treated withlevothyroxine (Synthroid), not Vitamin B12.
* (D) Narrow-angle glaucoma#Incorrect - Treated withtimolol, acetazolamide, or surgery, not cyanocobalamin.
* Cyanocobalamin Prescribing Information (NIH): https://medlineplus.gov/druginfo/meds/a607038.
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* PTCB Exam Content Outline - Disease States & Medications
Key Facts About Cyanocobalamin & Pernicious Anemia:Analysis of Answer Choices:References for Pharmacy Technicians: