Each 500-mg and 1-g vial contains meropenem trihydrate 570 and 1140 mg, respectively (equivalent to anhydrous meropenem 500 and 1000 mg, respectively).
It also contains anhydrous sodium carbonate 104 mg and 208 mg, respectively, as excipient for constitution.
For each gram of meropenem (anhydrous potency), the vial contains sodium 90 mg (3.9 mmol).