Cephalexin is a common oral antibiotic that doctors prescribe for skin infections, ear infections, and urinary tract infections. It belongs to the cephalosporin family, which works by stopping bacteria from building cell walls. If you’ve ever been told to take a "pen‑white" pill for a boil, that’s probably cephalexin.
Most people take cephalexin for 5‑7 days, but the exact length depends on the infection. The usual adult dose is 250‑500 mg every 6‑8 hours. Kids get a weight‑based dose, usually 25‑50 mg per kilogram per day split into three doses. Always follow the prescription label – finishing the whole course prevents the bacteria from coming back stronger.
Cephalexin is generally safe, but like any drug it can cause reactions. The most frequent are mild stomach upset, nausea, or a slight rash. If you notice diarrhea that’s watery or has blood, that could be a sign of a more serious infection called C. difficile – call a doctor right away.
Allergic reactions are rarer but important. Symptoms include itching, swelling, hives, or trouble breathing. If any of these appear, stop the medicine and get emergency help. People allergic to penicillin sometimes react to cephalexin, so tell your doctor about any past allergies.
In the UK you need a prescription to get cephalexin from a pharmacy. When ordering online, choose a licensed UK pharmacy that asks for a valid prescription and shows a registration number (e.g., GMC or MHRA). Avoid sites that sell it without a prescription – they’re often counterfeit and can put your health at risk.
Before you place an order, check the price against local pharmacies. Some online providers offer free delivery for a small fee, but compare the total cost. Look for clear contact details and a pharmacist‑available helpline – that’s a good sign the service is legit.
Once your order arrives, inspect the packaging. Genuine cephalexin tablets are usually white or off‑white and have the brand name or “Cephalexin” printed on each pill. If the tablets look discolored or the packaging is torn, contact the pharmacy before taking anything.
Remember, antibiotics only work against bacterial infections. Using cephalexin for a viral cold won’t help and can increase resistance. If you’re unsure whether you need an antibiotic, ask your GP or pharmacist for advice.
That’s the quick rundown on cephalexin – what it does, how to take it, what side effects to watch, and how to get it safely online. Stay informed, follow your prescription, and you’ll be on the road to recovery faster.
