Cephalexin – What You Need to Know
When working with Cephalexin, a first‑generation cephalosporin antibiotic prescribed for common bacterial infections. Also called Phexin, it attacks the bacterial cell wall. Antibiotics are drugs that kill or stop bacteria, and they are essential for treating bacterial infections like skin cellulitis, strep throat, or urinary tract infections. Paying attention to antibiotic resistance is key to keeping Cephalexin effective.
How Cephalexin Works, Dosage Tips, and Safety
Cephalexin works by binding to proteins that form the bacterial cell wall, causing the wall to break down and the bug to die. This simple mechanism makes it a go‑to choice for doctors treating uncomplicated infections. The typical adult dose is 250 mg to 1 g every 6‑8 hours, but the exact amount depends on the infection site and severity. Taking the medicine with food can reduce stomach upset, yet missing a dose shouldn’t be compensated by doubling the next one – consistency beats spikes. Side effects are usually mild: nausea, diarrhea, or a rash may appear, but severe allergic reactions are rare. If you notice hives, swelling, or breathing difficulty, seek help right away.
Resistance emerges when bacteria learn to evade the drug’s action, often after repeated or inappropriate use. For Cephalexin, resistance shows up as reduced susceptibility in Staphylococcus aureus or certain Gram‑negative rods. Doctors counter this by ordering a culture before prescribing, especially for chronic or recurrent infections. When resistance is confirmed, alternative agents such as amoxicillin‑clavulanate or a different class of cephalosporin may be recommended. Understanding local resistance patterns helps both patients and clinicians choose the right antibiotic the first time.
The brand name Phexin is just a market label for Cephalexin, and the two are interchangeable in terms of safety and effectiveness. Knowing the brand can be useful when comparing price options at online pharmacies. If you’re looking for a broader view, our collection below covers drug interactions with HIV meds, side‑effect comparisons for related antibiotics, and practical guides on buying generics safely. Whether you’re a first‑time user or revisiting an old prescription, the articles ahead will give you clear, actionable advice on making Cephalexin work for you.
