Preparation	Dosage	Cost*
Cyanocobalamin tablets	1,000 μg daily	$ 2.87
Cyanocobalamin injection	1,000 μg weekly†	2.88 to 5.60
Cyanocobalamin nasal gel (Nascobol)	500 μg weekly	67.19‡
Folic acid (Folvite)	1 mg daily	4.17