Is Alloderm in lips safe - what are the pros & cons?

Hello, I am seeking long-term lip augmentation. HA products do not work for me because i metabolize them too fast. I have had a dermal fat graft. It worked to some extent. What are the pros and cons of using strips of alloderm in lips? Is it dangerous in any way? Why is it not used commonly by plastic surgeons? Thank you very much for your time and help.