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buy vit b12 100000 mcg per ml injections Rx Vitamin B-12 (Generic) Injectable Solution dogs and horses as needed Methylcobalamin 10,000mcg injectable, 10mL (lyophilized)
Description
How much reduced depends on your genotype: If you are heterozygous (CT one copy of the variant): your MTHFR enzyme retains approximately 65% of normal activity [3, 4]

At first, higher doses are used to quickly fill up vitamin B12 stores

2015 Jan;7(1):31-8

doi: 10.1155/2011/179674