methylcobalamin b12 injectable Injection (Vitamin B12) Create a Vitamin B12 Self-Injection
Description
Clean the site with an alcohol swab, wipe in a circular motion, let air-dry fully

Seek medical help if you notice any unusual symptoms after an injection

But,some side effects can be serious

Composition (Per ml)

Patients with Leber's Disease: Vitamin B12 levels may exacerbate optic nerve atrophy

These topics require more nuanced understanding and should not be the starting point for those new to the space
