Meronem 500mg Injection – Meropenem (500mg) – Pfizer Ltd – Pilcare – Exporter from India to Singapore youmobs 5 months ago Meronem 500mg Injection – Meropenem (500mg) – Pfizer Ltd – Pilcare – Exporter from India to Singapore Meronem 500mg Injection is an antibiotic that is used to treat severe infections of the skin, lungs, stomach, urinary tract, blood, and brain (eg. meningitis). It works by killing the bacteria that cause these problems. However, it will not treat a viral infection.