Main Page | See live article | Alphabetical index Ertapenem is an carbapenem antibiotic marketed under the name INVANZ. It is similar to the earlier imipenem, but has a longer half-life. The marketing slogan is The Power of One, as the dose is one gram, once a day. It must be given parenterally (by injection or infusion). It is designed to be more effective against gram-negative bacteria than its predessor. It is not effective against MRSA or Pseudomonas aeruginosa. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.