It is designed to show exactly how much solution to draw for a chosen dose, once the peptide vial has been reconstituted with bacteriostatic water
The 0.3 mL, 0.5 mL, and 1.0 mL options change capacity, not the unit-to-mL relationship
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
After 28 days, even with proper refrigeration, both the preservative effectiveness and the peptide stability begin declining
Trekking poles, sunglasses, wet wipes, and a trash bag are also useful