I'm in the same position. We are looking to move to Cebu and need to ensure we can get my wifes insulin there. My son, who lives there, has been checking.
Lantus is available - Watsons pharmacies charge 827 pesos per cartridge and 365 pharmacy charge 817 pesos. Our problem is that Novarapid is not available. Watsons say it is not on their approved list. They would have to import it. upshot is wife is checking as to alternatives. We can get all her tablets even tho' some of them have different names.
If you google watsons you should find a website ,then send them an email.
found it: www.watsons.com.ph
Hope this helps