i usually use 250mg of sust or enanthate every 10 days now,thats holding me fine.i even went every 14 days just to see how i felt and i still had a increased sex drive and felt wonderful. at my age testosterone is a wonder drug tht helps me out alot,without it id prolly be tired all day with no sex drive,did i just say prolly? let me rephrase that,id be tired all day with no sex drive cause thats what brought me to the doctor in the first place.he right away wants to put me on lexapro and paxil,i told him "no way",i DEMANDED HORMONE TESTS THRU BLOODWORK,he said its a waste of time but he said he will do it.anyway i get a call from him saying he needs to see me about my hormones,he tells me guess what,your tests levels where extremely low,i looked at him and said "looks like i was right" he didnt like that to much but it is what it is. with doctors sometimes u have to demand certain tests cause u know your body better than anyone so dont let them just right u a quick script for anti-depressents and send u home,u take charge and if he dont like it switch doctors