how long is b12 injection safe after it's drawn up to Administer an Intramuscular at Home Best Vitamin B12 Injection Site:

Yoshimi, A

Studies show that intravenous administration of 6 ml per ewe of this combination for three consecutive days before parturition has prophylactic effects on metabolic disorders of ewes and enhances the lamb's weight gain after birth

Sounds like a Stevens -Johnson Syndrome reaction

Some individuals genetically predisposed to higher medication responsiveness may reach their goal weight faster, requiring earlier and more frequent blood thinner monitoring

I react this way to most antibiotics which is why I wanted to be vaccinated, because if I get sick I am hard to treat

Dispose used syringes in a proper sharps container to prevent injury and contamination