I USEED CIALIS 5MG DAYLY , AND IT'S VERY EXPENSE

I USEED CIALIS 5MG DAYLY , AND IT'S VERY EXPENSE FOR MY, I ASKED MY HEALTH INSURSNCE(BLUE CROSS) TO GIVE DISCOUNTEF PRICE AND MY DOCTOR FILED OUT FORM CALED FORMULARY TIER EXCEPTION TO ASK FOR REDUCED PRICE.
BLUE CROSS DEIED THIS REQUST AND ASKED TO TRY 'TIER 2 BRAND MEDICATION;RAPAFLO.
IS THIS MEDICATION DOES THE SAME RESULTS AS CIALS 5MG.
I NEED YOUR ADVISE