Antibiotic brand names include Keflex, Zithromax, Levaquin, Bactrim and Tobrex. Each of these brands represents a major antibiotic drug class. While there are over 100 different brands of antibiotics, all of them come from seven drug classes.Continue Reading
The seven main antibiotic drug classes are aminoglycosides, penicillins, macrolides, cephalosporins, fluoroquinolones, tetracyclines and sulfonamides. Keflex is a cephalosporin, Zithromax is a macrolide, and Levaquin is a fluoroquinolone. Bactrim is a sulfonamide, and Tobrex is an aminoglycoside. Penicillins and tetracyclines are largely off-patent and are generally referred to by their generic names.
Antibiotic drug classes are determined by the organic structures of the compounds in that class, by the organisms the antibiotic was either cultured or synthesized from, or both. For example, cephalosporin antibiotics are derived from the fungus Cephalosporium acremonium. Macrolide antibiotics are produced by actinomycete bacteria of the genus Streptomyces. They also exhibit a lactone ring structure comprised of at least 12 members and linked by at least one sugar.
Antibiotics are chosen for a given bacterial infection based on several factors. These include the types of pathogens that normally cause a particular infection, whether or not a particular pathogen takes a stain in the laboratory, and whether a particular organism is sensitive to a given drug class. Additionally, cost, side effects and dosing schedule may be considered.Learn more about Medications & Vitamins
Doctors prescribe Macrobid, Bactrim, Cipro, Augmentin and Levaquin for the treatment of a urinary tract infection, or UTI, reports Everyday Health. The antibiotic the prescribing physician deems best for the patient depends on the individual patient, the health of the patient’s kidneys and the patient’s history of antibiotic use.Full Answer >
Keflex, the brand name for cephalexin, is a cephalosporin antibiotic prescribed to treat specific bacterial infections, including urinary tract, ear, skin, bone and pneumonia infections. According to MedlinePlus, Keflex does not treat viral infections such as colds or the flu.Full Answer >
Chlamydia, a sexually transmitted bacterial infection, is typically treated using the oral antibiotics doxycycline and azithromycin, which is more commonly known by the brand name Zithromax, according to WebMD. In more serious cases of chlamydia, hospitalization and treatment with intravenous antibiotic medications may be required.Full Answer >
Amoxicillin, brand name Amoxil, and amoxicillin-clavulanate -- Augmentin -- are antibiotics commonly prescribed for sinus infections, according to WebMD. If a patient is allergic to penicillin-related drugs, cefaclor and loracarbef are sometimes used. Treatment usually takes 10 to 14 days.Full Answer >