B12 from food and supplements has to pass through a fairly involved process in the stomach and gut before your body can use it, and that process becomes less efficient with age, with certain medications, and with diets that include little or no animal protein
Each route has distinct bioavailability profiles, meaning the effective 5-Amino-1MQ dosage will need to be adjusted based on how the compound is delivered
I get lots of energy from this
Repeat testing is informative once the nonessential source has been stopped or enough time has passed for an injection to clear, using the same or a comparable assay so the trend is interpretable
IV push, IV infusion over a set time, IM injection into a muscle, etc.)
The effectiveness of peptides can vary based on their composition, dosage, and method of administration