Some individuals have genetic or metabolic variations that affect B12 handling, absorption, or utilization
Concentrations below 5mg/mL increase the peptides surface area exposed to dissolved oxygen, accelerating oxidative degradation
But potency decreases incrementally each day after reconstitution, and by week 4 or 5, the degradation may become meaningful enough to affect your results
A local injection-site reaction Intramuscular injections can leave the area sore, red, warm or slightly swollen for a day or two
Handling requirements: Researchers must treat this material as a laboratory research chemical and comply with all applicable institutional procedures for storage, handling, labeling, and disposal