What is the role of different anti-biotic in treatment of gluteal abscess?

Antibiotic choices. When treating an abscess -one has to consider 'what' germs might be there, then make the appropriate selection for therapy. Sometimes it's more than just antibiotics (such as incision). One has to consider patient allergies, drug interactions, dosing/length of therapy etc. It's nice to have a culture of the abscess material, but sometimes a best guess will do. I like trimethoprim-sulfa. See MD.