Ver el código de «Vitamin B12»

==Administration==
*Type: Vitamin 
*Dosage Forms:
*Routes of Administration: IV/IM, oral, nasal, sublingual
*Also known as cobalamin, cyanocobalamin

==Adult Dosing==
*Normal absorption: 1000 mcg/day PO
*Malabsorption: 100-1000 mcg IV/IM or deep SC injection daily for 6 or 7 days
*Nasal spray: 500 mcg intranasally in one nostril weekly

==Pediatric Dosing==
*30-50mcg IM daily (preferred) OR 1000 mcg/day PO

==Special Populations==
*[[Drug Ratings in Pregnancy|Pregnancy Rating]]: C
*[[Lactation risk categories|Lactation risk]]: Infant risk cannot be ruled out
*Renal dosing: increased dose/frequency may be required
*Hepatic dosing: increased dose/frequency may be required

==Contraindications==
*Allergy to class/drug

==Adverse Reactions==
===Serious===
*CHF, pulmonary edema
*Anaphylaxis, angioedema
*Peripheral vascular disease
===Common===
*Injection site pain
*Arthralgia
*Dizziness, headache
*Nasopharyngitis

==Pharmacology==
*Half-life: 
*Metabolism: biliary; enterohepatic cycling
*Excretion: mostly renal

==Mechanism of Action==
*Vital to cell reproduction, growth, and synthesis of myelin and nucleoprotein, as well as energy metabolism

==Comments==

==See Also==
*[[Vitamin B12 deficiency]]
*[[Folic acid]]
*[[Vitamin deficiencies]]

==References==
<references/>
[[Category:Pharmacology]] [[Category:FEN]]