Well I assume its safe to take longterm then, thats good. Although it sounds like it may take a long long time to see results.
Also remember that you should NOT PEEL while doing this treatment. You will just be causing inflammation while you are trying to treat it. And I would recommend keeping your lips moist throughout. You should pretty much do the moist/no trauma treatment while doing this. So that you are not fighting the drug by causing inflammation.
I kept my lips dry while using cyclosporine with no luck, so I recommend you try something different. But its up to you. Good luck, hopefully you have more luck than I did with the medication.