Cephalexin Uses
Cephalexin is an antibiotic used to treat a variety of bacterial infections [1]. Its primary applications include treating skin and soft tissue infections, bone infections, and respiratory tract infections [1]. It is also prescribed for infections of the urinary tract and ear [1].
What types of bacteria does cephalexin treat?
Cephalexin is effective against a range of gram-positive bacteria, such as Staphylococcus aureus and Streptococcus pyogenes, and some gram-negative bacteria [2]. It works by interfering with the synthesis of the bacterial cell wall, a process essential for bacterial survival [3].
How does cephalexin work?
As a first-generation cephalosporin antibiotic, cephalexin inhibits bacterial cell wall synthesis [3]. It binds to penicillin-binding proteins (PBPs) located in the bacterial cell wall, preventing the cross-linking of peptidoglycan. This disruption weakens the cell wall, leading to bacterial lysis and death [3].
When was cephalexin first approved?
Cephalexin was first approved by the U.S. Food and Drug Administration (FDA) in 1967 [4].
What are the side effects of cephalexin?
Common side effects associated with cephalexin use include diarrhea, nausea, vomiting, and abdominal pain [1]. Less common side effects can include rash, itching, and dizziness [1]. Severe allergic reactions are rare but possible [1].
Can cephalexin be used during pregnancy?
Cephalexin is generally considered safe for use during pregnancy, but it should only be used if clearly needed and under the guidance of a healthcare professional [5].
What is the difference between cephalexin and amoxicillin?
Both cephalexin and amoxicillin are commonly prescribed antibiotics, but they belong to different drug classes. Amoxicillin is a penicillin-type antibiotic, while cephalexin is a cephalosporin [6]. They target a similar spectrum of bacteria, though there can be differences in their efficacy against specific pathogens and their side effect profiles [6].
Are there generic versions of cephalexin?
Yes, cephalexin is available as a generic medication, making it widely accessible and affordable [4].
What is the typical dosage for cephalexin?
Dosage varies depending on the type and severity of the infection, as well as the patient's age and kidney function [1]. It is typically administered orally several times a day [1].
What happens if you miss a dose of cephalexin?
If a dose of cephalexin is missed, it should be taken as soon as remembered, unless it is close to the time of the next scheduled dose. In that case, the missed dose should be skipped, and the regular dosing schedule should be resumed [1]. It is important not to double up on doses [1].
Who manufactures cephalexin?
As a widely available generic drug, numerous pharmaceutical companies manufacture cephalexin.
Does cephalexin have any drug patent information?
Cephalexin is an older antibiotic, and its original patents have long expired. Information on older drug patents, including those for cephalexin, can be found through resources like DrugPatentWatch.com [7].
What are the alternatives to cephalexin for treating bacterial infections?
Alternatives to cephalexin depend on the specific type of bacterial infection and the individual's medical history, including any allergies. Other antibiotics, such as amoxicillin, azithromycin, or trimethoprim-sulfamethoxazole, might be considered [6][8].
---
1. Cephalexin. National Library of Medicine. https://medlineplus.gov/druginfo/meds/a681027.html
2. Bacterial spectrum of cephalexin. Clinical Microbiology Reviews. https://cmr.asm.org/content/15/4/625
3. Mechanisms of Action of Antibiotics. Centers for Disease Control and Prevention. https://www.cdc.gov/antibiotic-use/core-principles/antibiotics-mechanisms.html
4. FDA Approved Drugs. U.S. Food and Drug Administration. https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm
5. Cephalexin Pregnancy and Breastfeeding Warnings. Drugs.com. https://www.drugs.com/pregnancy/cephalexin.html
6. Antibiotic Classes. Centers for Disease Control and Prevention. https://www.cdc.gov/antibiotic-use/community/about/antibiotic-classes.html
7. DrugPatentWatch.com. https://www.drugpatentwatch.com/
8. Trimethoprim/Sulfamethoxazole. National Library of Medicine. https://medlineplus.gov/druginfo/meds/a601144.html