Keflex (Cephalexin) - A Broad-Spectrum Antibiotic for Treating Infections

Keflex (Cephalexin) is an oral antibiotic that is used to treat a wide range of bacterial infections caused by both gram-positive and gram-negative bacteria. As a cephalosporin, Keflex is often prescribed for common bacterial infections such as pneumonia, bronchitis, urinary tract infections (UTIs), and skin infections like cellulitis and impetigo. Cephalexin works by disrupting the bacteria’s cell wall synthesis, which ultimately leads to the death of the bacteria.

This antibiotic is commonly prescribed for patients who require treatment for mild to moderate infections. Keflex is available in various forms, including tablets, capsules, and oral suspension, and it is generally taken in divided doses, typically 2 to 4 times a day, depending on the severity and type of infection. It is important to complete the full course of treatment as prescribed, even if symptoms subside, to prevent the development of antibiotic resistance.

Common Uses of Keflex (Cephalexin)

• Respiratory Infections: Such as pneumonia, bronchitis, and sinusitis.
• Skin Infections: Including cellulitis, impetigo, and abscesses.
• Urinary Tract Infections (UTIs): Used to treat infections in the bladder, kidneys, or urethra.
• Ear Infections: Such as otitis media.
• Bone Infections: For the treatment of bone and joint infections.

How Keflex (Cephalexin) Works

Keflex (Cephalexin) works by disrupting the synthesis of the bacterial cell wall. Bacteria need a strong cell wall to maintain their structure and function. When Keflex interferes with the construction of this wall, the bacteria are unable to maintain their shape and integrity, causing them to break apart and die. This mechanism of action makes Keflex effective against a broad range of bacterial pathogens.

Dosage and Administration

The usual dose of Keflex (Cephalexin) depends on the infection being treated. For adults, the typical dosage ranges from 250 mg to 1 gram, taken 2 to 4 times a day. The duration of the treatment also depends on the type and severity of the infection. It is important to take Keflex exactly as prescribed and to complete the full course of treatment, even if you feel better before finishing the medication. This helps to prevent the development of antibiotic-resistant bacteria.

Possible Side Effects

Common side effects of Keflex (Cephalexin) include mild diarrhea, nausea, stomach pain, and skin rash. Serious side effects are rare but may include allergic reactions, such as swelling of the face, lips, or throat, difficulty breathing, or severe skin reactions. If you experience any of these symptoms, seek immediate medical attention. Long-term use of Keflex may also result in overgrowth of non-susceptible organisms, such as fungi.

Warnings and Precautions

Before taking Keflex, inform your healthcare provider if you have any known allergies to cephalosporin antibiotics or penicillin. Use with caution in individuals with a history of kidney disease, gastrointestinal disorders, or blood clotting disorders. Keflex may cause an allergic reaction, so it is important to stop taking it and seek medical help if you develop any symptoms of an allergy, such as difficulty breathing, rash, or swelling.

Missed Dose/Overdose

• Missed Dose: If you miss a dose, take it as soon as you remember, unless it is almost time for your next dose. Do not take two doses at once to make up for a missed dose.
• Overdose: If you overdose on Keflex, seek immediate medical attention. Symptoms of an overdose may include nausea, vomiting, and stomach cramps.

Storage

Store Keflex (Cephalexin) at room temperature, away from moisture and heat. Keep the medication in a tightly closed container and out of reach of children. The liquid form should be stored in the refrigerator and used within the time frame indicated on the label.