Supplementing with methylcobalamin may be more effective ( Am J Kidney Dis 2010;55:1069-1078, but this supplement is more costly
if you develop symptoms like hives, difficulty breathing, chest tightness, or severe dizziness after an injection, seek medical attention, as those could indicate an allergic reaction (which is extremely uncommon)
They can include stomach pain, a cough, dizziness, fatigue, headache, and weakness
Hence, while the integrity of the randomization must be respected in any analysis of an RCT, the question on what to do about post-randomization effect modifiers remains and must be discussed
What are the different types of vitamin B12 used in injectable formulations
This is absolute