CAP
- Amoxicillin 500 mg–1 g PO TDS (mild)
- Co-amoxiclav + clarithromycin (moderate)
- Co-amoxiclav + clarithromycin or piptaz (severe)
HAP / VAP
- Piptaz 4.5 g IV q8h ± vancomycin if MRSA risk
- Meropenem if ESBL risk
UTI
- Lower: nitrofurantoin 100 mg BD × 3 d
- Pyelonephritis: co-amoxiclav or ciprofloxacin
- Hospital: piptaz / meropenem
Meningitis
- Ceftriaxone 2 g IV BD + amoxicillin (Listeria if >50)
- Add dexamethasone 10 mg IV QDS
Sepsis (unknown source)
- Piperacillin-tazobactam 4.5 g IV q8h
- Meropenem 1 g IV q8h if severe / penicillin allergy
Neutropenic sepsis
- Piptaz IV ± gentamicin
- Vancomycin if MRSA/line infection
