I used them on my belly right below my breast for internal burning. You can get 5% Lido ointment somewhat like Neosporin by script. You can get topical pain creams at compounding pharmacies too. I found ketamine and lidocaine together worked better. Lidocaine ointment actually gave me weird warming sensations when I first got RSD. Never use Caspian cream for RSD (pepper creams). You can get pain meds in compounds with lidocaine too.