B 12 (Methylcobalamin) Therapy MedClub by Dr Jenn Beta Thalassaemia TIF Cyanocobalamin (B12) Injection 1000 mcg mL, Multiple Dose Vial 30 mL McGuff What You Need to Know About Vitamin B12 Duane NP Thalassemia: High Yield Notes Inherited microcytic anemia ( globin chain production) severity varies from trait (mild) to major (severe) Key Concept Microcytosis from reduced hemoglobin synthesis Trait often mild asymptomatic;