hi , i have erectile dysfunction problem from last 5 to 8 year , i am 34 married man , i have 2 children s. i take treatment from last 2 months , but i have no improvement in condition , kindly advice. my doctor give me--- 01-L arginine & L-cetrulline 5 G sachet once in a day . 02-MANSAX tablet --- twice in a day. 03- solopan- 40-- once in a day. kindly suggest me better treatment.