PMCID: PMC12735534
Its important to rotate injection sites each time to avoid skin irritation and infections
The effects take place immediately, and for someone who takes a lot of medication, its a lot easier on the bodyespecially on the stomach. [I have a] background in public health, and I can definitely say that through IV therapy youre going to get a lot more benefit getting it through an IV, as opposed to taking something orally
16 Oral iron Despite its widespread availability in most countries and its very safe track record, vitamin B 12 is rarely prescribed in the oral form
With intramuscular injections of B12, any excess will result in high levels within your blood so you may experience side effects such as headache, dizziness, tiredness, or gastrointestinal issues including nausea, until your body has metabolised any excess through your kidneys enroute to excretion via urine