If you are taking any anti-infective drugs, such as amoxicillin or erythromycin, make sure to let laboratory personnel know prior to testing
However, protocols extending beyond 6 months in humans rely on extrapolation rather than controlled studies
MIC B12 injections are commonly used alongside GLP-1 receptor agonists like semaglutide or tirzepatide
The headaches seem to follow a different pattern (from what I remember) and tend to lessen over time - I had problems with headaches when I started using methyl but (nasal rather than injection) but it went away after a week or so
For many, particularly those with underlying malabsorption issues like pernicious anaemia, injections are demonstrably more effective and stronger in their ability to deliver B12 directly into the bloodstream, bypassing the digestive systems limitations
Some use injections for faster repletion and later switch to an oral routine