I cannot say if the charge you have is trustable or not. But in Germay Androcur is availalbe as injection (3ml injection, contains 300 mg CPA). The recommendation is one injection every 10-14 days. Doing the injection very slow is also recommended. I found only german information - maybe a online translation service helps:

PDF (https://www.google.de/url?sa=t&rct=j&q= ... %2Fmedikam ente%2Fandrocur-depot-300-mg-injektionslosung%2F&ei=epysVbvIBcPtUorUtKgL&usg=AFQjCNHMVBf_3uqIzGLyoysFfZ5zPI1MRw&bvm=bv.98197061,d.d24)

HTML (https://www.google.de/url?sa=t&rct=j&q= ... %2Fmedikam ente%2Fandrocur-depot-300-mg-injektionslosung%2F&ei=epysVbvIBcPtUorUtKgL&usg=AFQjCNHMVBf_3uqIzGLyoysFfZ5zPI1MRw&bvm=bv.98197061,d.d24)