Cephalexin 250 mg (Phexin) Capsules

Phexin 250 mg Capsules Description

Class & Active Ingredient
Phexin 250 mg Capsules are a first-generation cephalosporin antibiotic. Each capsule contains Cephalexin 250 mg, which works by inhibiting bacterial cell wall synthesis, leading to bacterial death.

Composition and Mechanism

• Cephalexin (250 mg): A broad‑spectrum β‑lactam antibiotic effective against many gram‑positive and some gram‑negative bacteria. It binds to penicillin-binding proteins (PBPs), disrupting peptidoglycan cross-linking in the bacterial cell wall and leading to cell lysis.

Uses of Phexin 250 mg

Phexin treats a variety of bacterial infections, including:

• Respiratory tract infections: bronchitis, pneumonia, pharyngitis, tonsillitis

• Ear infections: acute otitis media

• Skin and soft tissue infections: cellulitis, infected wounds, impetigo

• Bone and joint infections: osteomyelitis, septic arthritis

• Urinary tract infections: cystitis, pyelonephritis, prostatitis

• Dental infections & surgical prophylaxis: used before procedures and in endocarditis prevention in certain patients

Medicinal Benefits

• Bactericidal action: Rapidly kills susceptible bacteria through cell-wall disruption

• Broad-spectrum coverage: Effective against common pathogens like Staphylococcus, Streptococcus, E. coli, Proteus, and Klebsiella

• Oral administration: Good absorption and convenient dosing; works with or without food

Directions for Use

• Administration: Swallow whole with water. May be taken with or without food; taking with meals may reduce stomach upset.

• Dosage: Adults—250–500 mg every 6 hours or 500 mg every 12 hours for 7–14 days, tailored to infection type and severity. Pediatric dosing based on weight (usually 12.5–25 mg/kg/dose every 6–12 hours).

• Course duration: Complete the full prescribed course—even if symptoms improve—to prevent relapse and resistance.

Storage

Store in a cool, dry place (20–30 °C), away from direct sunlight and moisture. Keep out of reach of children.

Side Effects

Common (usually mild):

• Diarrhea, nausea, vomiting, indigestion, abdominal pain

• Headache, dizziness, rash, itching

Serious (rare):

• Hypersensitivity reactions (anaphylaxis)

• Clostridioides difficile–associated diarrhea

• Liver enzyme elevation, cholestatic jaundice

• Superinfection (fungal or resistant bacteria)

Precautions

• Allergy: Avoid in those allergic to cephalosporins or penicillins due to cross-reactivity risk.

• Renal impairment: Dose adjustment recommended for reduced kidney function.

• Liver disease: Use cautiously in hepatic impairment.

• Pregnancy & breastfeeding: Generally considered safe, but consult a doctor.

• Drug interactions:

  • Probenecid delays excretion.

  • Possible interactions with warfarin, cholestyramine, live vaccines, metformin, zinc supplements.

• Other warnings: Caution in seizure disorders, gastrointestinal diseases; may impair driving due to dizziness.

Conclusion

Phexin 250 mg Capsules (Cephalexin) are an effective oral antibiotic for a broad range of bacterial infections. They offer bactericidal action, convenient dosing, and generally mild side effects. Use exactly as prescribed, complete the full course, and consult a healthcare provider for any concerns or adverse reactions.