Are some methods of administering HRT inherently better than others? Audience requested: subcutaneous injections. Subcutaneous means under the skin. In this type of injection, a short needle is used to inject medication Subcutaneous Injection: What It Is and How to Give One L Carnitine Injections: A Clinical Guide for Practitioners National Medical Resources Inc Subcutanous injection self administration South Tees Hospitals NHS Foundation Trust Routes of Drug Administration Springer Nature Link