..I'm also over 50 .. and on occassion could use a slight 'little helper'... same type of thing as to what you have describe above, I've never really considered it a problem...and it's only on a rare occassion.. That being said, I did buy from
www.genegra.com a sample kit...of kamagra. (100 mg)....and it worked like a charm...I initially tried 1/2 the pill...about one hour before "play time"... it worked amazingly well...my partner was unaware of the assistance...and commented...wow...you were hard as a rock today...!! I did notice...a slight flushing of my face...but...really no other side effect to speak of....
I also use it for girth exercises...and again...it works like magic..
hope this helps with your concerns..