I am contemplating a temporary change from hCG monotherapy to Test Cyp (100 mgs per week) + hCG (2 x 250 mgs per week).
When I decide to revert back, is there any significant chance that the hCG monotherapy will no longer be as effective? Said differently, might testicular function be compromised? My greatest concern is fertility, but I also want to make sure that I can revert to monotherapy, and remain a strong responder.
Additionally, is there any significant risk that test cyp will lost significant strength after a few months past "use by date." I have some from mid last year, and I noticed it's set to expire in 3 months.