Why are the b12 injection needles so long?

Question

Is it to get through peoples fat skin? If you are skinnier can you use a smaller needle?

Answer 1

They don't have to be.  You might inquire about methylcobolamine, a sublingual tablet.

Answer 2

B12 injections are usually administered to patients that are suffering from deficiency of the vitamin B12. It is an intramuscular injection so it has to be administered with a big needle. The needle has to be long as well as thicker than usual gauge.

Answer 3

B-12 injections are usually only given once a month. They are given intramuscular for this reason. So you need a longer needle. You can give B-12 in a needle as small as a 25 Gage, because it is not very viscous.