Since the discovery of penicillin, there have been many classes and types of beta-lactam antibiotics developed. Cephalexin and amoxicillin are two commonly used beta-lactam antibiotics.
Cephalexin is a prescription medication used to treat a variety of bacterial infections. It is a first-generation cephalosporin antibiotic, which belongs under the larger classification of beta-lactam antibiotics. Cephalexin interferes with cell wall synthesis by binding penicillin-binding proteins inside the cellular wall.
Ultimately, when cephalexin is dosed appropriately, it causes lysis, or destruction, or the bacterial cell. Different bacterial types contain different bacterial binding proteins, so the effectiveness of cephalexin varies with different types of bacteria.
Cephalexin is available as an oral tablet or capsule, as well as an oral suspension. The brand name of cephalexin is Keflex.
It is used by infants, children, and adults. Amoxicillin is a prescription medication also used to treat a variety of bacterial infections. It is a penicillin antibiotic but also falls under the larger classification of beta-lactam antibiotics.
Amoxicillin, like cephalexin, interferes with cell wall synthesis by binding penicillin-binding proteins inside the cellular wall leading the destruction of the bacterial cell. Amoxicillin is available as an oral tablet or capsule, chewable tablet, as well as an oral suspension. The brand name of amoxicillin is Amoxil or Polymox. Sign up for Amoxicillin price alerts and find out when the price changes! Get Price Alerts. Cephalexin has been shown to be active against a variety of bacterial organisms including Escherichia coli , Haemophilus influenzae beta-lactamase negative , Klebsiella pneumoniae , Moraxella catarrhalis , Proteus mirabilis , Staphylococcus aureus MSSA , Staphylococcus epidermidis , Streptococcus pneumoniae , and Streptococcus pyogenes.
The sensitivity of these organisms allows cephalexin to also be effective in treating many common types of infections including upper respiratory infections such as sinusitis , pharyngitis, and tonsillitis. Amoxicillin is also effective against lower respiratory infections such as community-acquired pneumonia. Other uses of cephalexin include skin infections cellulitis , bone and joint infections, otitis media, and urinary tract infections UTI.
Amoxicillin has been shown to be active against a variety of bacterial organisms including Enterococcus faecalis , Escherichia coli , Haemophilus influenzae beta-lactamase negative , Helicobacter pylori , Proteus mirabilis , Staphylococcus sp.
The sensitivity of these organisms allows amoxicillin to also be effective in treating many common types of infections including upper and lower respiratory infections. Other uses include skin tissue infections, otitis media, and urinary tract infections. Sign up for Cephalexin price alerts and find out when the price changes! Both cephalexin and amoxicillin have commonly been used off-label for endocarditis prophylaxis.
Patients with congenital heart defects or prosthetic heart valves are at an increased risk of developing an infection in the lining of their heart after dental procedures.
Prophylactic doses of antibiotics such as amoxicillin and cephalexin given prior to these procedures have been shown to decrease the risk of such infections.
This study was supported by a manufacturer of cephalexin Keflex. Disney FA et al. Cephalexin and penicillin in the treatment of group A beta hemolytic streptococcal throat infections. Am J Dis Child Nov Am J Dis Child Nov Penicillin, the old standard antibiotic for treating group A streptococcal infections, has become less effective because of higher failure and recurrence rates.
Citation s : Disney FA et al. October 18, A person viewing it online may make one printout of the material and may use that printout only for his or her personal, non-commercial reference. This material may not otherwise be downloaded, copied, printed, stored, transmitted or reproduced in any medium, whether now known or later invented, except as authorized in writing by the AAFP.
Contact afpserv aafp. Want to use this article elsewhere? Get Permissions. Read the Issue. Sign Up Now. Previous: Hepatitis C. Next: Safety of Psychotropic Medications in Breastfeeding. Jun 1, Issue. Am Fam Physician. Read the full article. Keflex is also used before dental procedures in patients identified with certain heart-related conditions to prevent bacterial infections of the heart known as endocarditis.
Red, irritated eyes. Amoxicillin and Penicillin are the two main antibiotics prescribed for throat infections Cephalexin is most commonly used to treat infections caused by bacteria. Sore throat is reported only by a few people who take Cephalexin.
Red skin lesions, often with a purple center. Cephalexin may also be used for purposes not listed in this medication guide. Since cephalexin is antibiotic and sorethroat can be caused by bacteria it helps. Unpleasant breath odor. It Long Term Headache From Cialis can also be used for preventing endocarditis heart valve inflammation that is caused by an infection Cephalexin is a cephalosporin SEF a low spor in antibiotic that is used to treat bacterial infections of the lungs, ear, skin, bones, bladder, and kidneys.
It is usually taken with or without food every 6 or 12 Order Neurontin No Prescription hours for 7 to 14 days, depending on the condition being treated. Loss of appetite. Cephalexin is an antibiotic used to treat certain kinds of bacterial infections. Renal Impairment. Some of these types of infections may include: Respiratory tract infection, such as pneumonia, bronchitis, strep throat, or tonsillitis. If the sore throat is caused by a virus , Cephalexin will not be effective.
Typical signs of cephalexin allergy include rash, hives, and throat and facial swelling..
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