For adults treatment should be divided into Gonococcal and Non-Gonococcal
Ceftriaxone 1g IV once daily
Cefixime 400 mg PO BID is an option for outpatient therapy after initial 3 days of Ceftriaxone
Treatment should cover S. aureus, Streptococcus, Pseudomonas, Enterococcus,  B. burgdorferi
Vancomycin 15-20 mg/kg IV BID PLUS any of the following:
Ceftriaxone 2g IV once daily
Cefepime 2g IV three times daily
Ceftazidime 2g IV three times daily
Ciprofloxacin 400mg IV three times daily
Ceftriaxone 2g IV once daily
Cefepime 2g IV three times daily
Ceftazidime 2g IV three times daily
Ciprofloxacin 400mg IV three times daily
Ceftriaxone 1g IV once daily
Coverage for Salmonella and Staphylococcus spp
Vancomycin 20mg/kg IV twice daily PLUS
Ciprofloxacin 400mg IV three times daily OR
Imipenem/cilastatin 1g IV three times daily
Ciprofloxacin 400mg IV three times daily OR
Imipenem/cilastatin 1g IV three times daily
Bone and joint antibiotics
GU antibiotics
Skin and soft tissue antibiotics
Neuro antibiotics
Nonsteroidal anti-inflammatory drugs
Antibiotics 
Cardiovascular antibiotics
Beta-lactams