hi there, as you have been prescribed urimax I asssume that you are suffering from BPH. Straining, frequent urination
and incomplete evatuation of bladder are known symptoms of benign prostatic hyperplasia
and your urologist
must have evaluted you for the same. If despite taking medication you are not showing any improvemnt then yu may consult your doctor again for modifiction of dose. Head ache or dizzyness
is a side effect of the medication and it can be overlooked if not too troublesome. Other wisse you may request for a change of mediction from your attending doctor. Take care.