Since the skin is around 1.6mm thick, a 4mm needle is long enough to penetrate the skin
Is it safe for me to selfadminister vitamin B12 (cobalamin) injections during pregnancy?
Experientia 38:254256, 1982 Sikiric P, Rotkvic I, Mise S, Seiwerth S, Grabarevic Z, Petek M, Rucman R, Zjacic-Rotkvic V, Duvnjak M, Jagic V, Suchanek E, Marovic A, Banic M, Brkic T, Hanzevacki M, Separovic J, Djacic S, Simicevic V: Dopamine agents efficacy in peptide ulcer healing and relapse preventiona further indication for importance of stomach dopamine in the stress organoprotection concept
But we don't stop there
Your provider will check in during your cycle and adjust recommendations as needed