How does cefalexin work?
Cefalexin stops bacteria from forming a protective cell wall, causing them to break down and die.
What is cefalexin used to treat?
Cefalexin is commonly prescribed for:
- Urinary tract infections (UTIs)
- Skin infections (such as cellulitis)
- Chest infections (such as bronchitis and pneumonia)
- Ear and throat infections
- Bone and joint infections
Who can take cefalexin?
Cefalexin is suitable for most adults and children, as prescribed by a doctor.
Who might not be able to take cefalexin?
Cefalexin may not be suitable if you:
- Have a history of severe allergic reactions to antibiotics (such as penicillin or cephalosporins)
- Have severe kidney disease (your doctor may adjust your dose)
- Have a history of Clostridium difficile infection
Can I take cefalexin if I’m pregnant or breastfeeding?
Cefalexin is generally considered safe during pregnancy and breastfeeding, but always check with your doctor before use.
What if I miss a dose?
If you forget a dose, take it as soon as you remember. If it’s close to your next dose, skip the missed one—do not take two doses at once.
How effective is cefalexin?
Cefalexin is highly effective at treating bacterial infections when taken as prescribed. Symptoms usually improve within a few days, but it’s important to complete the full course to prevent antibiotic resistance.
What should I do if I take too much?
Taking too much cefalexin may cause nausea, vomiting, diarrhoea, or stomach pain. If symptoms are severe, seek medical help immediately.
What dose of cefalexin is usually taken?
- For most infections: 250mg to 500mg every 6 to 12 hours
- For severe infections: Higher doses may be prescribed by a doctor
Your doctor will determine the correct dose based on your condition.
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What are the side effects of cefalexin?
Common side effects include:
- Nausea or vomiting
- Diarrhoea
- Stomach pain
- Skin rash or itching
Serious side effects, such as severe allergic reactions, persistent diarrhoea, or liver problems, require urgent medical attention.
How should I take cefalexin?
Cefalexin is taken as tablets, capsules, or liquid, usually with or without food.
When should cefalexin be taken?
Cefalexin should be taken at evenly spaced times throughout the day, as prescribed by your doctor.
What are the brand names for cefalexin?
Cefalexin is available as a generic medicine, but some branded versions include:
- Ceporex
- Keflex
Final thoughts
Cefalexin is an effective antibiotic for bacterial infections but should only be used when necessary to prevent resistance. To get the best results, take it as prescribed and complete the full course. If symptoms persist or side effects occur, speak to your doctor or pharmacist.
