About co-amoxiclav

Co-amoxiclav combines the antibiotic amoxicillin with clavulanic acid. Amoxicillin kills susceptible bacteria by disrupting their cell wall formation. Clavulanic acid itself has minimal antibiotic effect but blocks beta-lactamase enzymes produced by some bacteria, preserving amoxicillin activity and widening the spectrum of coverage.

In UK clinical practice this combination is used when a penicillin is appropriate but beta-lactamase producing organisms are suspected or when broader beta-lactam coverage is required. Prescribers select it according to local antimicrobial stewardship policies in primary and hospital care.

  • Major active ingredients: amoxicillin with clavulanic acid
  • Therapeutic class: penicillin antibiotic plus beta-lactamase inhibitor
  • Well known brand name: Augmentin; many generic versions exist

Before using this medicine review the sections on Caution and safety measures and Inadvisable traces.

Uses that are clinically indicated and typical uses

Co-amoxiclav is prescribed for a variety of bacterial infections when its spectrum is suitable. Typical uses include:

  • Infections of the skin and soft tissue compartments such as cellulitis, infected bites and wound infections
  • Respiratory tract infections including community acquired pneumonia, acute sinusitis and COPD exacerbations
  • Dental infections and some surgical prophylaxis in dentistry
  • Selected intra-abdominal infections and mixed flora infections often managed with combination therapy
  • Certain urinary tract infections where indicated by local guidance

Use should be reserved for confirmed or strongly suspected bacterial disease and guided by culture results and stewardship policies where available.

Presentations and strengths available in the UK

In the UK co-amoxiclav is supplied in both oral and parenteral forms to meet outpatient and inpatient needs.

  • Tablets: common strengths include 250 mg/125 mg and 500 mg/125 mg (amoxicillin/clavulanate)
  • Oral liquids: powders for reconstitution for children; typical concentration after mixing is 400 mg/57 mg per 5 ml
  • Intravenous preparations: vials and infusion formulations for hospital use

Other markets may offer 875 mg/1dose: 25 mg per tablet or different pack sizes. If unsure about the medicine received, consult a pharmacist.

Ways to take co-amoxiclav and practical guidance on dosing

A clinician will prescribe dose and duration based on the infection, its severity, patient weight and renal function. Follow that prescription precisely.

  • Complete the full prescribed course unless instructed otherwise by your prescriber
  • Tablets are typically administered twice or three times daily at even intervals; taking them with food reduces stomach upset
  • Do not crush non chewable tablets without pharmacist approval; chewable tablets must be chewed
  • Kidney impairment often requires dose adjustment or extended dosing intervals; check with the prescriber if you have renal disease

For example, a common outpatient regimen might be 500 mg/125 mg three times daily for 5 to 7 days for many community infections, but individual regimens vary. See Action steps for a the prescribed dose was missed if you miss a dose.

Safety aspects to weigh and mitigating steps

Discuss the following with the prescriber or pharmacist before starting co-amoxiclav.

  • Allergy history: inform clinicians about any allergy to penicillins, cephalosporins or prior severe antibiotic reactions
  • Liver disease: previous liver injury, especially cholestatic jaundice associated with co-amoxiclav, requires caution
  • Infectious mononucleosis: amoxicillin commonly produces a rash in this illness and is usually avoided
  • Stools that are loose: report persistent or severe diarrhoea promptly; antibiotic associated colitis may occur
  • Pregnancy and lactation care: discuss potential benefits and risks with your clinician
  • Driving and using machines: the drug does not usually impair function but avoid driving if you feel dizzy or unwell

Look at Medical reasons to refrain from use for absolute reasons to avoid this medicine.

When not to utilize co-amoxiclav

  • Known severe hypersensitivity to amoxicillin, clavulanic acid or any penicillin
  • Prior hepatic dysfunction or cholestatic jaundice attributed to co-amoxiclav
  • Confirmed infectious mononucleosis where amoxicillin is likely to cause rash

If any item applies to you, do not take this medicine and ask a clinician for an an alternate possibility.

Probable adverse effects and important warning signs

Frequent peripheral effects include nausea, vomiting, abdominal pain, bloating, diarrhoea and ache in the head. Mild skin rash and yeast infections are reported.

Serious but less common reactions can include anaphylaxis, severe skin reactions, hepatitis and cholestatic jaundice. Seek prompt medical attention if you notice anything abnormal.:

  • Trouble with breathing, swelling of face or throat or sudden severe rash
  • Yellow skin or yellow eyes condition, dark urine, pale stools or persistent abdominal pain
  • Severe persistent diarrhoea or symptoms of dehydration

If peripheral effects are severe or do not improve contact your healthcare provider. For potential medicine combinations see Adverse drug-drug a reciprocal exchanges at scale reveal systemic patterns..

Interacting medications to be cautious about

Provide a full list of your medicines, including over the counter products and supplements. Prominent exchanges include:

  • Vitamin K antagonists (for example warfarin): antibiotics can alter gut flora and affect INR, so extra monitoring of operational health may be required
  • Methotrexate drug therapy: penicillins can reduce renal elimination of methotrexate increasing toxicity risk
  • Probenecid pharmaceutical: reduces renal excretion of amoxicillin and can raise its blood concentration
  • Allopurinol: combined use has been associated with a higher frequency of rash
  • Certain live oral vaccines: antibiotic therapy may reduce vaccine effectiveness; time vaccinations appropriately
  • Oral contraceptives: severe vomiting or diarrhea might reduce contraceptive absorption; use additional precautions to take if needed

If in doubtvalidate this. with a pharmacist or prescriber before starting new medications.

Dose missed guidance

If you miss one of your doses take it as soon as you remember unless the next scheduled dose is imminent. Do not double the dose as a method to compensate. Continue with the remaining doses at the usual times. If you are uncertain seek advice from your pharmacy or prescriber.

Overdose incident: urgent response actions

Symptoms of overdose on pills may include severe nausea, vomiting, diarrhoea, drowsiness, agitation, tremor or seizures, particularly in people with impaired kidney function. Large overdose on pillss can result in kidney problems such as crystalluria. If an overdose on pills is suspected contact emergency services or your local emergency department immediately.

Guidance for storage capacity determines how much you can keep. and final disposal of materials

  • Tablets: keep at normal room temperature away from moisture and direct light, generally 15 to 30 C
  • Reconstituted oral suspension: refrigerate if the label instructs and use within the stated period, commonly 7 to 10 days; do not freeze
  • Store medicines out of the reach of children and animals
  • Do not dispose of antibiotics in household waste or by flushing; return unused or expired medicines to a pharmacy for safe disposal

Feasible optional choices and a brief comparison

Generic co-amoxiclav contains the same active substances as branded Augmentin. Depending on allergy status, site of infection and local resistance patterns, clinicians may select other possible paths. Common options include:

  • Doxycycline: used for some respiratory infections and other markers that point to; avoid in pregnancy and young children
  • Macrolides (azithromycin, clarithromycin): a rival options for some respiratory infections and for patients with penicillin allergy
  • Cephalosporins (for example cephalexin, cefuroxime): useful in many infections but use caution in those with severe penicillin allergy
  • Amoxicillin alone: narrower spectrum and does not protect against beta-lactamase producers
  • Nitrofurantoin and trimethoprim: commonly used for uncomplicated lower urinary tract infections
  • Metronidazole: targets anaerobes and is often used in combination for intra-abdominal disease

Selection should be guided by culture results, allergy considerations, local antimicrobial stewardship and cost. See Prices and access in Great Britain for rough expense estimates.

Prices and access in the UK

Co-amoxiclav is a Prescription Only Medicine (POM) in the UK and must be supplied only with a valid prescription from a UK registered prescriber. Charges vary according to whether you obtain it on the NHS or privately.

  • NHS supply: in England a standard prescription charge applies per item for most patients; Scotland, Wales and Northern Ireland have different prescription arrangements and exemptions.
  • Private purchase: prices depend on brand, pack size and retailer; prices below are approximate and given in GBP (GBP).
  • 21 tablets of generic co-amoxiclav 500 mg/125 mg, price around 6 to 20 GBP.
  • Branded Augmentin 500 mg/125 mg, 21 tablets: approximately 25 to 45 GBP
  • Oral suspension (400 mg/57 mg per 5 ml): roughly 6 to 18 GBP per bottle after reconstitution

Approximate private costs for some other possible paths:

  • Amoxicillin 500 mg, 21 tablets: about 2 to 6 GBP
  • Doxycycline 100 mg, 14 capsules: about 5 to 12 GBP
  • Clarithromycin 500 mg, 14 tablets: about 6 to 15 GBP
  • Nitrofurantoin 100 mg MR, 14 capsules: about 8 to 18 GBP

These figures are estimates for guidance only. Always confirm current prices with a pharmacy or prescriber. Online suppliers should be UK registered; see Regulation and notes dealing with legal issues.

Brief information dossier

  • Active elements: amoxicillin plus clavulanic acid
  • Common UK tablet strengths: 250 mg/125 mg and 500 mg/125 mg
  • Supply category: Prescription Only Medicine (POM) in the UK

Dosing instructions are available in the user manual. Medication taking and dosing guidelines. For temporary containers and shelves organize storage space effectively. and disposal instructions see Handling, safe data storage solutions include cloud storage, hard drives, and optical media. and disposal safety guidelines.

Additional aspects about Augmentin