Intramuscular means exactly that: the injections is IN the muscle
After that, its typically followed by maintenance shots every two or three months to keep your levels topped up
References Seiwerth S, Milavic M, Vukojevic J, Gojkovic S, Krezic I, Vuletic LB, Pavlov KH, Petrovic A, Sikiric S, Vranes H, Prtoric A, Zizek H, Durasin T, Dobric I, Staresinic M, Strbe S, Knezevic M, Sola M, Kokot A, Sever M, Lovric E, Skrtic A, Blagaic AB, Sikiric P
Support for contraception, UTIs, hormonal health, and everyday wellbeing
Administering the Injection Choose the Injection Site : IM Injection Sites : Common sites include the deltoid muscle (upper arm), gluteus maximus (buttocks), and vastus lateralis (thigh)