Rapid improvement of retinal and iris neovascularization after a single intravitreal bevacizumab injection in a patient with central retinal vein occlusion and neovascular glaucoma
However, some people might feel a bit of warmth, tightness in the chest, or slight nausea during the drip
see Vitamin B12 Health Professional Fact Sheet

Consider Alternatives If Who Should Avoid Do not use if You are pregnant or might become pregnanteffects on fetal development are unknown You are breastfeedingthe compound could potentially pass into breast milk You have a history of serious liver diseasemetabolic compounds require healthy liver function You're under 18this compound is for adult research use only You have uncontrolled thyroid conditionsmetabolic enhancement may complicate thyroid issues You're taking medications for diabetes without physician guidancemay compound glucose-lowering effects Use with caution if !You take blood pressure medicationsmetabolic changes may affect cardiovascular parameters !You have a history of heart conditionsconsult your cardiologist first !You're on hormone replacement therapypotential interactions not fully studied !You take thyroid medicationsmay affect metabolic balance !You have kidney diseaseclearance of the compound may be affected !You're using other research compoundsinteractions are not well characterized Administration How do I use it

Many individuals with ME/CFS and FM remain undiagnosed, or misdiagnosed, due to overlapping symptoms with other conditions and insufficiently specific diagnostic criteria
B12 helps your body convert fat and protein to provide energy to your body, says Peter Kozlowski, M.D., a functional medicine doctor in Chicago