Co-amoxiclav

Co-amoxiclav is an antibiotic used to treat bacterial infections, including respiratory, urinary tract, and skin infections. It combines amoxicillin (a penicillin antibiotic) with clavulanic acid, which helps prevent bacterial resistance. If you’ve been prescribed co-amoxiclav, here’s what you need to know.

What is co-amoxiclav?

Co-amoxiclav is a broad-spectrum antibiotic that fights bacterial infections by stopping bacteria from growing and preventing resistance to amoxicillin.

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How does co-amoxiclav work?

Co-amoxiclav combines amoxicillin with clavulanic acid, allowing it to kill a wider range of bacteria, even those that are resistant to standard penicillins.

What is co-amoxiclav used to treat?

Co-amoxiclav is commonly prescribed for:

  • Respiratory infections (such as pneumonia and bronchitis)
  • Urinary tract infections (UTIs)
  • Skin and soft tissue infections (such as cellulitis and infected wounds)
  • Ear, nose, and throat infections (such as sinusitis and tonsillitis)
  • Bone and joint infections

Who can take co-amoxiclav?

Co-amoxiclav is suitable for most adults and children, as prescribed by a doctor.

Who might not be able to take co-amoxiclav?

Co-amoxiclav may not be suitable if you:

  • Have a history of severe allergic reactions to penicillin or cephalosporin antibiotics
  • Have liver disease or a history of jaundice caused by antibiotics
  • Have kidney disease (your doctor may adjust your dose)

Can I take co-amoxiclav if I’m pregnant or breastfeeding?

Co-amoxiclav is generally considered safe during pregnancy and breastfeeding, but speak to 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 co-amoxiclav?

Co-amoxiclav 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 co-amoxiclav may cause stomach pain, nausea, or diarrhoea. If symptoms are severe, seek medical help immediately.

What dose of co-amoxiclav is usually taken?

  • For most infections: 500/125mg every 8 hours or 875/125mg every 12 hours
  • For severe infections: Higher doses may be prescribed by a doctor

Your doctor will determine the correct dose based on your infection.

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What are the side effects of co-amoxiclav?

Common side effects include:

  • Nausea or vomiting
  • Diarrhoea
  • Skin rash or itching
  • Thrush (oral or vaginal yeast infections)

Serious side effects, such as severe allergic reactions, liver problems, or persistent diarrhoea (Clostridium difficile infection), require urgent medical attention.

How should I take co-amoxiclav?

Co-amoxiclav is taken as tablets, capsules, or liquid, usually with food to reduce stomach upset.

When should co-amoxiclav be taken?

Co-amoxiclav should be taken at evenly spaced times throughout the day, as prescribed by your doctor.

What are the brand names for co-amoxiclav?

Co-amoxiclav is available as a generic medicine, but some branded versions include:

  • Augmentin
  • Curam

Final thoughts

Co-amoxiclav 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.

Always consult a medical professional
This article is for informational purposes only and is not a substitute for medical advice. Always consult a healthcare professional before starting, stopping or changing any medication. If you have concerns about your medication or experience side effects, speak to your doctor or pharmacist immediately.

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