If your doctor just wrote a prescription for Cephalexin, you might be wondering what exactly it does and how to use it correctly. In simple terms, Cephalexin is a penicillin‑type antibiotic that fights bacterial infections. It’s often the go‑to drug for skin infections, ear infections, throat infections, and urinary tract infections. Knowing the right dose, what to expect, and where to get it safely can make the whole process smoother.
Cephalexin attacks the wall of bacteria, stopping them from growing and eventually killing them. Because of this, it works well on Gram‑positive bacteria like Staphylococcus and Streptococcus. Doctors usually prescribe it for:
It’s not effective against viral infections, so you won’t see any benefit for colds or flu. If you’re unsure why you got the prescription, ask your pharmacist – they can explain the specific infection it’s targeting.
Cephalexin comes in capsules, tablets, and liquid form. The exact dose depends on the infection, your age, and kidney function. Adults often take 250 mg to 1 g every 6‑8 hours. Kids get a dose based on weight, usually 25‑50 mg per kilogram per day divided into 2‑4 doses. Always follow the schedule your doctor gave you; skipping doses can let the infection bounce back.
Take Cephalexin with a full glass of water. You can have it with food or on an empty stomach – food might help reduce stomach upset. Common side effects include mild nausea, diarrhea, and a rash. If you notice severe diarrhea, blood in stool, or a rash that spreads quickly, stop the medication and call your doctor right away.
Because Cephalexin is cleared by the kidneys, people with kidney problems may need a lower dose. Pregnant or breastfeeding moms should also check with their doctor before starting, as the drug is generally considered safe but still needs medical guidance.
Finish the entire prescription even if you feel better after a few days. Stopping early can leave some bacteria alive, which may cause the infection to return and increase resistance.
When it comes to buying Cephalexin, the safest route is a licensed pharmacy. If you need an online option, look for pharmacies that require a valid prescription, show a physical address, and have a pharmacist you can contact. Avoid sites that sell the drug without a prescription or promise “instant shipping” with no verification – they often sell counterfeit medication.
To keep costs down, compare prices at a few reputable online pharmacies, check if your insurance covers the drug, and ask about generic versions. Cephalexin’s generic form is usually cheaper than brand names like Keflex, but it works the same way.
Bottom line: Cephalexin is a solid, widely used antibiotic for many common bacterial infections. Take it exactly as directed, watch for side effects, finish the course, and use a trusted pharmacy to get it. If you have any doubts, a quick call to your pharmacist can clear them up and keep you on the right track.
Wondering what to use instead of Bactrim this year? This article takes a close look at six leading alternative antibiotics for infections like UTIs and skin problems. It breaks down what each option is best for, where they fall short, and how they stack up against Bactrim. You'll get clear pros and cons, practical details, and a handy comparison table to make things simple. Stay informed and choose the right antibiotic with confidence.
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