People who take glutathione by injection can even have a sulfury, rotten-egg taste in their mouth
Vitamin B12 injections for pernicious anaemia are the gold-standard treatment in the UK, delivering hydroxocobalamin intramuscularly to bypass the absorption problem
Without neurological symptoms, around 3 injections over 2 to 3 weeks is standard
A study in the Journal of Clinical Biochemistry says, Vitamin B12 deficiency can cause big problems with nerves and blood. Vitamin B12 is key for making DNA, fatty acids, and energy. Source: Journal of Clinical Biochemistry Common Signs of Deficiency A Vitamin B12 shortage can show in many ways, like: Fatigue and weakness Numbness or tingling in hands and feet Difficulty walking Mood changes, such as depression Spotting these signs early is key for quick action
Some practitioners implement cycling approaches (such as 12 weeks on, 4-8 weeks off), though no published research directly compares continuous versus cycled protocols