Subcutaneous injections 45 90 angles USE 90 for MOST patients USE 45 for small guage needles, low body fat (body builders malnourished) Orange tops = insulin syringe measured in UNITS Cobalex 2000 B12 Injection (Hydroxocobalamin) Jurox Specialist Sales Hi Dr. Tony here! If you give yourself injectionstestosterone, estrogen, insulin, peptides, or B12these are 3 of my favorite tips to make them almost painless. Tip 1: Insert the needle quickly, then A Guide to Needle and Syringe Choices Vitamin B12 10 Week Injection Cycle Kit: Syringes & Needles & Alcohol Wipes only 5.22 Hydroxocobalamin Vitamin B12 Supplement