Most people dont have problems with B12 shots, but some might feel pain or redness at the site, have diarrhea, or itch
I think she did at least one time when I was there
Zhou N, Leung CH, William WN Jr, Weissferdt A, Pataer A, Godoy MCB, Carter BW, Fossella FV, Tsao AS, Blumenschein GR, Le X, Zhang J, Skoulidis F, Kurie JM, Altan M, Lu C, Glisson BS, Byers LA, Elamin YY, Mehran RJ, Rice DC, Walsh GL, Hofstetter WL, Roth JA, Tran HT, Wu J, Solis Soto LM, Kadara H, Swisher SG , Vaporciyan AA, Gibbons DL, Lin HY, Lee JJ, Heymach JV, Negrao MV, Sepesi B, Cascone T
That means sterile water is only appropriate for single-use applications where the entire contents are used immediately