If you are injecting into your thigh muscle , then a 25 gauge x1 inch needle should be OK .Obtainable from Medisave.co.uk It is possible to get a 27 gauge needle from exchangesupplies.org , but it is longer -1 1/2
While scientific research is still catching up, many swear by the benefits of vitamin B12 for its role in speeding up recovery, thanks to its ability to improve metabolism, improve mood, and support nerve function
No validated human dose, half-life or safety programme was identified
(PubMed) Mischoulon D, Fava M
If your vitamin deficiency is caused by malabsorption of B12 from food , your doctor might recommend B12 shots
In very rare cases, allergic reactions like itching or swelling may occur