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Linezolid is an antibiotic used for the treatment of infections caused by Gram-positive bacteria that are resistant to other antibiotics. [9] [10] Linezolid is active against most Gram-positive bacteria that cause disease, including streptococci, vancomycin-resistant enterococci (VRE), and methicillin-resistant Staphylococcus aureus (MRSA).
Therefore, a drug given by the intravenous route will have an absolute bioavailability of 100% (f = 1), whereas drugs given by other routes usually have an absolute bioavailability of less than one. If we compare the two different dosage forms having same active ingredients and compare the two drug bioavailability is called comparative ...
Avibactam is a non-β-lactam β-lactamase inhibitor [2] developed by Actavis (now Teva) jointly with AstraZeneca.A new drug application for avibactam in combination with ceftazidime was approved by the FDA in 2015 for treating complicated urinary tract (cUTI) and complicated intra-abdominal infections (cIAI) caused by antibiotic-resistant pathogens, including those caused by multidrug ...
Carbapenems are further broken down into groups with ertapenem being the lone member of group 1. Group 2 carbapenems (imipenem, meropenem, and doripenem) are identified by their efficacy with respect to multiresistant gram-negative bacteria such as Pseudomonas and Acinetobacter species. [41]
Although meropenem is not approved for intramuscular or subcutaneous routes of administration in humans, there were studies that evaluated the drug bioavailability in cats and reported bioavailability of 99.69% for intramuscular route and 96.52 % for subcutaneous route of administration; these studies also compared elimination half-lives for ...
Cefepime has an extended spectrum of activity against Gram-positive and Gram-negative bacteria, with greater activity against both types of organism than third-generation agents. A 2007 meta-analysis suggested when data of trials were combined, mortality was increased in people treated with cefepime compared with other β-lactam antibiotics . [ 1 ]
Imipenem is in the carbapenem family of medications and works by interfering with the bacteria's cell wall. [1] Cilastatin blocks the activity of dehydropeptidase I which prevents the breakdown of imipenem. [1] Imipenem/cilastatin was first sold in 1987. [3] It is on the World Health Organization's List of Essential Medicines. [4]
Aztreonam has strong activity against susceptible gram-negative bacteria, including Pseudomonas aeruginosa. It is resistant to some beta-lactamases, but is inactivated by extended-spectrum beta-lactamases. [citation needed] It has no useful activity against gram-positive bacteria or anaerobes.