The side effects I have experienced from one half cc of the liquid C (15mg) are no different than what I experienced taking 20 mg of the real Cialis. Heart pounding and mild increase in heart rate, mild headache and some trouble sleeping, especially the first and second nights. I don’t think the liquid has any additional side effects. With a 10 mg tablet I notice these effects are much less, but this is just a dosage effect, not a liquid/tablet difference.
I have been doing the half ml every Friday for 3 weeks now, and the side effects are decreasing, as I get used to it I guess.
(Today is Friday. Yaahooo!)
The only other negative side effect is that my wife is walking funny these days.