Methylcobalamin (Methyl B-12), is a more efficiently absorbed and retained form of B-12 compared to other types, such as cyanocobalamin. Methylcobalamin acts as an active coenzyme of the vitamin B12 analogs, playing a significant role in cellular growth and replication. It is indispensable for the formation of methionine from homocysteine, a process crucial for overall cell health and function.