I am using 2mL right now. I understand your logic being able to buy a larger bottle, more mL's, maybe save some money.I think 3-4ml daily is nice at 2ml not feel much in some aspects but definitely an internal hell (hot) this i know epiandrosterone is working maybe will kick in few days more.
Alternatively, how about a higher concentration per mL? I would like that. 200-300 mg/mL.
Right now, if I went to 4mL/400mg, I'm covering quads and tops of feet in addition to neck/traps/shoulders. 2mL completely covers my neck/shoulders/traps.