No trial has established one step-down schedule
Vitamin B2, otherwise known as Riboflavin, contributes to normal: energy-yielding metabolism, nervous system function, normal skin and mucous membrane maintenance, red blood cell maintenance, skin health, vision, metabolism of iron, protection of cells from oxidative stress, and reduction of tiredness and fatigue
Vitamin B12 is important for growth, cell reproduction, blood formation, and protein and nerve metabolism
B12 Injections can help improve memory, lack of focus, energy, emotional stability, female fertility, low testosterone for men, digestive issues, hypothyroidism, red blood cell formation, metabolism, and its also helpful for nerve and brain regeneration
Effects may be faster with medical-grade B12 and professional dosing
It would remain the responsibility of Primary Care to diagnose and treat B12 deficient patients but they would have to choose to