i have not used cialis for about 2 months now, when i first took it i had hardons anytime i wanted, but after awhile it hurt me more than it helped for some reason, the last thing i did was the liquid and it didn't do much for me, probably was used to it by then also was taking about 50mg per week, looking forward to taking it again, probably only do 25-30mg once per week. from what i have experience the tabs are better, but i start back and try the liquid to see how good it quality is. i donr think you should take it over once per week. sometimes cialis is weird, works unbelievable one time and none the next..... my 2 cents