Similar experience here with TriMix. .1ml didn’t do anything, so went with .2ml and whoa Nelly! Hard as a rock for four hours and had to take the antidote! .12ml is just right for me–keeps me rock hard for three hours+, but then immediately recedes. Fortunately, I no longer need the TriMix. I will say that 10mg of Cialis does next to nothing for me. 20mg works nicely, and 30mg is great for a fuck fest.