Why is my not getting erected?

From what I checked on the net - Caverta should be generic Viagra. It is not clear from the above how you took the medication, all medicine should be taken as prescribed by your doctor and not more than a recomended dosage. I suggest you wait a few days to see if the effect of this medicine "wears off" naturally, otherwise you should go see a urologist you may be having a problem of erectile dysfunction.