B12 is a water-soluble vitamin, meaning any excess is quickly flushed out through the urine
There are no significant restrictions, but you should avoid vigorously massaging the injection site for a few hours
Contraindications include polycythemia vera, Leber optic neuropathy, and cobalt allergy
Even though vitamin B12 shots are most effective in those who have a deficiency in the vitamin, it is hard to know if you have a deficiency and most people will be able to experience the positive effects of regular vitamin B12 injections
So, even though vitamin B12 is water-soluble (meaning your body typically excretes excess through urine), extremely high levels may occasionally lead to side effects, including: Headaches or dizziness Digestive issues, such as diarrhea Skin reactions like itching or rashes Allergic reactions (rare but very serious) To avoid this, it's important to consult with a healthcare professional to determine the correct vitamin B12 dosage for your needs
Critical levels of brain atrophy associated with homocysteine and cognitive decline
