Common use

Keflex (cephalexin) is a first-generation cephalosporin antibiotic widely prescribed to treat a broad range of bacterial infections. When you buy Keflex online, you receive a proven medication that works by interfering with the formation of bacterial cell walls, ultimately causing the bacteria to rupture and die. Cephalexin is sufficiently resistant to penicillinases produced by gram-positive microorganisms, although it can be broken down by beta-lactamases from gram-negative bacteria. This cephalosporin antibiotic demonstrates broad-spectrum activity against numerous gram-positive pathogens, including Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pyogenes, Streptococcus pneumoniae, Corynebacterium diphtheriae, Clostridium species, Actinomyces israelii, and Bacillus anthracis. It also covers several gram-negative organisms such as Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Neisseria gonorrhoeae, Neisseria meningitidis, Shigella, and Salmonella species. Because of this wide antibacterial coverage, Keflex is commonly used as a skin infection treatment, helping clear cellulitis, wound infections, and abscesses. It is also a trusted option for strep throat, middle ear infections (otitis media), tonsillitis, laryngitis, bronchitis, and pneumonia. Many physicians recommend cephalexin as an effective UTI treatment for uncomplicated urinary tract infections. Additionally, Keflex generic formulations are prescribed for bone infection (osteomyelitis) and joint infections where first-generation cephalosporins remain the standard of care. If you are looking to buy cephalexin at an affordable price, Keflex generic offers the same proven efficacy as the brand-name product.



Dosage and directions

The standard dose of Keflex for adults typically ranges from 1 to 4 grams per day, divided into equal doses taken at regular intervals. For most mild to moderate bacterial infections, the usual dosing schedule is 250 mg to 500 mg of cephalexin every 6 hours, or 500 mg to 1 g every 12 hours, depending on the type and severity of the infection. For skin infection treatment or UTI treatment, a common regimen is 500 mg every 12 hours for 7 to 14 days. In more serious conditions such as bone infection, higher doses up to 4 grams daily may be prescribed. For strep throat, a typical course is 500 mg twice daily for 10 days. Always complete the full prescribed course of this cephalosporin antibiotic, even if symptoms improve before the medication is finished, to prevent antibiotic resistance and ensure the bacterial infection is fully eradicated. Your doctor will determine the appropriate dosage based on the specific infection, your kidney function, and overall health status.



Precautions

Before you buy Keflex online or begin treatment with cephalexin, inform your doctor about any drug allergies you may have, especially to penicillins or other cephalosporin antibiotics, as cross-sensitivity can occur. Let your healthcare provider know if you have kidney disease, liver disease, a gastrointestinal disorder such as colitis, or diabetes. Patients with impaired renal function may require dosage adjustments when taking this cephalosporin antibiotic. During treatment, monitor for any signs of an allergic reaction, including skin rash, itching, or difficulty breathing. If you are diabetic, be aware that cephalexin may cause false positive results with certain urine glucose tests. It is important to stay well hydrated during treatment, particularly when using Keflex for UTI treatment. Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding, as the benefits and risks of cephalexin therapy should be carefully evaluated.



Contraindications

Keflex is contraindicated in patients with a known hypersensitivity to cephalexin, other cephalosporins (including Ceclor, Duricef, Omnicef, Spectracef, Suprax, Cefzil, Fortaz, and Ceftin), or other beta-lactam antibiotics. Individuals with a documented severe allergic reaction to penicillin-class antibiotics should use this cephalosporin antibiotic with extreme caution, as partial cross-allergenicity exists between penicillins and cephalosporins. Special care should be exercised when prescribing Keflex to patients with a history of kidney disorders, pseudomembranous colitis, or gastrointestinal disease. This medication should be used during pregnancy and breastfeeding only when clearly needed and under medical supervision. Cephalexin is generally not recommended for infants younger than 6 months unless directed by a physician who has weighed the potential benefits against the risks.



Possible side effect

As with any cephalosporin antibiotic, Keflex may cause side effects in some patients. The most common side effects of cephalexin include mild gastrointestinal symptoms such as nausea, diarrhea, stomach discomfort, and vomiting. More serious side effects that require immediate medical attention include signs of an allergic reaction such as hives, skin rash, swelling of the face, lips, or tongue, and difficulty breathing. Seek emergency care if you experience seizures, high fever, severe sore throat, or a headache accompanied by a severe blistering, peeling, and red skin rash (Stevens-Johnson syndrome). Other potentially serious reactions include pale or yellowed skin, dark-colored urine, hallucinations, confusion, unusual weakness, easy bruising or bleeding, agitation, and decreased or absent urination. Prolonged use of this bacterial infection treatment may lead to overgrowth of non-susceptible organisms, including fungi. Clostridium difficile-associated diarrhea (CDAD) has been reported with nearly all antibacterial agents, including cephalexin, and may range in severity from mild diarrhea to fatal colitis. If you experience any serious or persistent side effects while taking Keflex, discontinue use and seek immediate medical help.



Drug interaction

Before you buy cephalexin, inform your doctor about all medications, supplements, and herbal products you are currently taking. Keflex may interact with several drugs that can affect its efficacy or safety. Probenecid is known to decrease the renal tubular secretion of cephalexin, resulting in higher and more prolonged blood levels of the antibiotic. Live bacterial vaccines should be avoided during treatment with this cephalosporin antibiotic, as Keflex may reduce their effectiveness. Cephalexin may decrease the effectiveness of combination-type oral contraceptive pills, so additional contraceptive measures should be considered during treatment. This medication can produce false positive results with certain diabetic urine testing products (copper sulfate-based tests). Keflex is known to increase the effects of indirect anticoagulants such as warfarin, which may raise the risk of bleeding. Concurrent use with phenylbutazone or furosemide may alter the pharmacokinetics of cephalexin. Salicylates (aspirin) and indomethacin can slow the renal excretion of cephalexin, leading to higher drug concentrations in the blood. Medications that decrease secretion in renal tubules may increase the concentration of cephalexin in blood serum and slow its elimination from the body. Always consult your healthcare provider before starting or stopping any medication while taking Keflex.



Missed dose

If you miss a dose of Keflex, take it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose of cephalexin to make up for a missed one, as this will not improve the treatment of your bacterial infection and may increase the risk of side effects. Maintaining consistent dosing intervals is important for keeping adequate blood levels of this cephalosporin antibiotic. If you frequently forget doses, consider setting an alarm or using a pill organizer to help you stay on track with your prescribed regimen.



Overdose

In the event of a Keflex overdose, symptoms may include severe nausea, persistent vomiting, stomach pain, diarrhea, and the presence of blood in urine. Large overdoses of cephalexin can potentially lead to kidney damage and neuromuscular excitability, including seizures. If you suspect an overdose of this cephalosporin antibiotic, seek emergency medical attention immediately or contact your local poison control center. Provide healthcare professionals with details about how much cephalexin was taken and when. Treatment of overdose is generally supportive, and hemodialysis may be considered in severe cases to remove the drug from the bloodstream.



Storage

Store Keflex capsules at room temperature between 59-77 degrees F (15-25 degrees C). Keep the medication in its original container, away from direct light, excessive heat, and moisture. Do not store cephalexin in the bathroom or near the kitchen sink where humidity levels are high. Keep this cephalosporin antibiotic out of reach of children and pets. If you have Keflex in liquid suspension form, store it in the refrigerator and discard any unused portion after 14 days. Do not use this medication after the expiration date printed on the packaging. When you buy Keflex online, ensure that it is stored properly upon arrival to maintain its full potency and effectiveness.



Disclaimer

We provide only general information about medications which does not cover all directions, possible drug integrations, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.