b12 compliance injection kit B-12 - INTRAMUSCULAR (Cyanocobalamin Injection) - Sola Pharma - Skin Pals™ 6 and folate may be linked to depression.” Studies may be inconclusive B!2 Inject Kit: Package Insert
Description
One of MYCO Medicals small-volume syringes is the RELI WEALY Retractable Safety Syringe

Paruthi J, Gill N, Mantzoros CS: Adipokines in the HIV/HAART-associated lipodystrophy syndrome

That said, more is not automatically better, and the right dose and frequency depend on you

Realistic Expectations: Individuals need to have realistic expectations about the results of B12 and Lipo injections

The 24-week trials allowed for assessment of several long-term safety considerations

Now heres the funny bit The MHRA in responding to our petition stated: Vitamin B12 could not legally be classified as a medicine that can be made available for sale without prescription in pharmacies because it is an injection and because the condition it is licensed to treat, pernicious anaemia, needs a clinician to diagnose it, and monitor its treatment (see point IV above)