Augmentin (Amoxicillin / Clavulanate) — Patient Information (Australia)

Augmentin is an antibiotic medicine used to treat certain bacterial infections. It contains two medicines: amoxicillin and clavulanate. This combination helps broaden the range of bacteria that can be treated, including some bacteria that produce enzymes (beta-lactamases) that would otherwise make plain amoxicillin less effective.

This guide is written to be patient-friendly and covers how Augmentin works, when it is used, how to take it safely, and what to expect. Always follow the directions provided with your product and any instructions from your healthcare professional.

Key points at a glance

• What it treats: bacterial (not viral) infections, such as some ear, sinus, chest, skin, tooth, and urinary infections.
• How it works: amoxicillin kills bacteria; clavulanate helps protect amoxicillin from bacterial resistance mechanisms.
• How to take: usually twice daily or three times daily depending on strength and formulation; many regimens are best taken at the start of meals.
• Common side effects: diarrhoea, nausea, stomach upset, rash.
• Stop and seek help urgently: severe allergic reaction, swelling, breathing difficulty, or severe/persistent diarrhoea.

Basic product information

Augmentin is a combination antibiotic. The exact strength and dosing schedule depend on the formulation (for example, tablet vs oral suspension) and the infection being treated. In Australia, availability and brand presentations may differ by product range.

Active ingredients

• Amoxicillin: a penicillin-type antibiotic (a beta-lactam).
• Clavulanate: a beta-lactamase inhibitor that helps restore amoxicillin’s activity against some resistant bacteria.

Who it is for

Augmentin is used in both adults and children, with dosing based on age, weight (for children), kidney function, and the type/severity of the infection.

How Augmentin works (mechanism of action)

Bacteria build their cell walls using proteins called penicillin-binding proteins (PBPs). Amoxicillin binds to PBPs, disrupting cell wall formation and leading to bacterial death.

Some bacteria produce beta-lactamase enzymes that can break down beta-lactam antibiotics like amoxicillin. Clavulanate inhibits these enzymes, allowing amoxicillin to work effectively.

The combination therefore offers improved coverage for bacteria that are resistant to amoxicillin alone.

Pharmacokinetics: how your body processes it

Pharmacokinetics describes what happens to the medicine in the body—how it is absorbed, distributed, metabolised, and eliminated. While individual responses vary, the following points are broadly relevant:

• Absorption: both amoxicillin and clavulanate are absorbed after oral dosing. Taking Augmentin at the start of a meal can improve tolerability and absorption.
• Distribution: effective concentrations can reach many infection sites, depending on the infection and tissue penetration.
• Metabolism: clavulanate is partially metabolised; amoxicillin is cleared mainly by the kidneys.
• Elimination: both components are primarily excreted by the kidneys. In kidney impairment, dosing adjustments may be needed.

If you have reduced kidney function, or you are elderly, the dosing interval or dose may need adjustment to reduce the risk of side effects.

Typical uses and indications in Australia

Augmentin is intended for confirmed or strongly suspected bacterial infections where the clinician considers a beta-lactamase–resistant antibiotic appropriate.

Common infection types may include:

• ENT infections (e.g., some cases of acute otitis media, sinusitis)
• Respiratory infections (e.g., acute bacterial exacerbations of chronic bronchitis, selected cases of pneumonia)
• Skin and soft tissue infections (e.g., bites, cellulitis)
• Dental infections (e.g., odontogenic infections, abscess-related infections)
• Urinary tract infections in selected situations
• Other bacterial infections as determined by your healthcare professional

Augmentin does not treat viral infections such as common colds or influenza. Using antibiotics when they are not needed can contribute to antibiotic resistance and may cause unnecessary side effects.

When to take Augmentin (timing and how often)

The dosing schedule depends on the product strength and the infection. Many regimens are taken:

• Twice daily (e.g., every 12 hours), or
• Three times daily (e.g., every 8 hours)

Take with food: Many people tolerate Augmentin better when taken at the start of a meal. Food can reduce stomach upset and may support better absorption.

Try to space doses evenly: Keeping a steady interval helps maintain effective antibiotic levels.

Practical tips for taking doses

• Set reminders on your phone or use a pill organiser (where appropriate).
• Take at the same times each day.
• If using oral suspension, shake well before measuring.
• Use an oral syringe/medicine measure device for accurate dosing (ask your pharmacist if unsure).

Food and interactions with meals

Food interaction: Augmentin is generally recommended to be taken with food to improve tolerability. It can be taken during meals or immediately after starting a meal.

How to manage missed appetite: If you cannot eat a full meal, taking it with a small snack may still help. If nausea persists, speak with a pharmacist about strategies (for example, timing adjustments).

Alcohol and medicine interactions

Alcohol does not directly neutralise antibiotics in the same way as some drug interactions, but it can increase the chance of side effects such as:

• Stomach upset (nausea, diarrhoea, abdominal discomfort)
• Dizziness or drowsiness (less common, but may occur with illness and medication together)
• Dehydration risk if diarrhoea occurs

Patient-friendly guidance: It’s safest to avoid or limit alcohol while taking Augmentin, particularly if you have diarrhoea or are unwell. If you have liver disease, alcohol use should be discussed with your healthcare professional.

Medicine interactions: what to tell your healthcare professional

Before starting Augmentin, it is important to consider other medicines you take. Tell your pharmacist/doctor if you use:

• Anticoagulants (blood thinners) such as warfarin — antibiotics may affect blood clotting tests in some people. Monitoring may be needed.
• Allopurinol — may increase the likelihood of rash in some patients.
• Oral contraceptives — although additional interactions are not always consistent, diarrhoea or vomiting from any cause can reduce absorption; consider backup contraception if you experience significant gastrointestinal upset.
• Probenecid — can affect kidney excretion and may alter antibiotic levels.

This is not a complete list. Always check with a pharmacist for your specific medicines and conditions, including over-the-counter products.

Dosing: general guidance (Australia)

Do not change your dose unless your clinician tells you to. The correct dose depends on:

• the infection type and severity
• your age
• kidney function
• the particular product strength (tablet or suspension) and its ratio of amoxicillin to clavulanate
• body weight (for children)

Dosing regimens are typically designed to provide effective amoxicillin exposure while limiting excessive clavulanate.

Typical schedule examples (illustrative)

Because strengths vary by product, below is a general framework rather than exact dosing. Your label or directions from your clinician and pharmacist are the reliable source for your treatment.

• Adults: often twice or three times daily, depending on the formulation and infection.
• Children: dosing is commonly based on weight, delivered as oral suspension or chewable tablets as appropriate.

If you are unsure which regimen applies to you, check the exact strength on your pack and speak to a pharmacist.

How to use Augmentin safely

Complete the course

Even if you feel better, it’s usually important to complete the full prescribed course to reduce the risk of the infection returning or not being fully eradicated.

What if you miss a dose?

• If you remember soon after the missed dose, take it when you remember.
• If it is close to the next dose, skip the missed dose and continue as scheduled.
• Do not double up to make up for a missed dose.

Stopping early

If you develop suspected allergy symptoms (such as hives, swelling, or breathing difficulty) or severe side effects, seek medical advice promptly.

Safety profile and side effects

Like all medicines, Augmentin can cause side effects. Many are mild and improve as your body adjusts, but some require urgent attention.

Common side effects

• Diarrhoea (including loose stools)
• Nausea, vomiting, or indigestion
• Abdominal discomfort
• Headache (sometimes)
• Rash (mild rashes can occur)

Less common but important reactions

• Allergic reactions: hives, swelling, or more severe reactions such as anaphylaxis
• Liver effects: some people may develop changes in liver enzymes or jaundice, usually reversible after stopping
• Severe or persistent diarrhoea: seek urgent medical advice if diarrhoea is severe, watery, contains blood/mucus, or is accompanied by fever or significant abdominal pain. This may indicate antibiotic-associated colitis.

When to seek urgent help

Seek urgent medical care or emergency assistance if you experience:

• trouble breathing, wheezing, or swelling of face/lips/throat
• severe rash, blistering, or skin peeling
• severe diarrhoea or signs of dehydration (dizziness, very reduced urination)
• yellowing of the skin/eyes or very dark urine

Practical use tips to improve tolerability

• Take with food: aim to take the dose at the start of a meal.
• Stay hydrated: drink water regularly, especially if diarrhoea occurs.
• Consider meal timing: if nausea is bothersome, try timing doses with the largest meal of your day (where consistent with your schedule).
• Use gentle foods: bland foods may be easier if your stomach is upset.
• Track symptoms: if symptoms worsen after 48–72 hours, contact your healthcare professional.

Duration of treatment

The length of therapy varies by infection and clinical response. Shorter or longer courses may be used depending on severity, local guidelines, and individual factors such as immune status.

If symptoms do not improve or worsen during the course, seek advice rather than stopping or extending the treatment without guidance.

Alternative options (discuss with a pharmacist or doctor)

Alternatives depend on the infection, bacteria likely involved, allergy history, and resistance patterns. Options may include:

• Other antibiotics (choice depends on the infection site and suspected organism)
• When appropriate, supportive care only (for self-limiting conditions where antibiotics are not beneficial)
• For penicillin allergy, a clinician may consider non-penicillin alternatives based on your reaction type and severity (this must be assessed individually).

If you have previously had an allergy or serious reaction to penicillins or cephalosporins, mention it clearly.

Market and legal context for Australia

In Australia, antibiotics are regulated under the Therapeutic Goods Administration (TGA) framework. Augmentin is an antibiotic product supplied according to Australian prescribing and dispensing arrangements. Australian healthcare practice includes strong emphasis on antibiotic stewardship—using antibiotics only when needed and selecting appropriate therapy.

You may see availability offered through pharmacies and online pharmacy services, with the exact process depending on the product category and local requirements. Always confirm that you are purchasing a genuine product from a reputable supplier.

Recent guidance and responsible antibiotic use

Australian antimicrobial stewardship initiatives encourage:

• Confirming likely bacterial infection before starting antibiotics
• Choosing narrowest effective therapy where possible
• Reviewing response within a few days and stopping if not needed
• Completing the recommended course to reduce relapse

If you feel substantially better early, still follow your course length advice. If symptoms do not improve as expected, contact your healthcare professional to reassess treatment and the diagnosis.

Delivery, availability, and what to check before ordering

Availability may depend on the specific strength and form (tablets vs suspension). When ordering online in Australia, it is important to check:

• Active ingredient strength (amoxicillin/clavulanate) and formulation
• Pack size and whether it covers your intended treatment duration
• Expiry date and storage requirements
• Whether the suspension needs preparation (if applicable) and the instructions on shaking and measuring

Delivery tips: Ensure someone can receive the parcel and that you can store the medicine appropriately. If you need refrigeration for any particular formulation (some do), confirm the storage instructions on the pack.

Storage and handling

• Store tablets and most formulations at controlled room temperature as stated on the pack.
• Keep medicines out of reach of children.
• For oral suspension, follow the preparation and storage instructions exactly (including shaking and any refrigeration requirements).
• Check expiry dates and do not use expired medicines.

Augmentin FAQ

1) What infections does Augmentin treat?

Augmentin is used for bacterial infections such as certain ear, sinus, chest, skin, dental, and urinary tract infections. It is not effective for viral illnesses like colds or flu.

2) How quickly should I feel better?

Some people notice improvement within 48–72 hours. If you are not improving, symptoms worsen, or you develop new concerning symptoms, contact a healthcare professional for review.

3) Should I take Augmentin with food?

Many patients tolerate Augmentin better when taken at the start of a meal. If you feel nauseated, food may help. Follow the directions on your product label.

4) Can I drink alcohol while taking Augmentin?

It’s safest to avoid or limit alcohol while you are taking Augmentin, particularly if you have diarrhoea or stomach upset. Alcohol can worsen side effects and dehydration risk. If you have liver disease, discuss alcohol use with your clinician.

5) What are the most common side effects?

The most common are diarrhoea, nausea, stomach upset, and sometimes rash. Seek medical advice if side effects are severe or persistent.

6) What should I do if I get diarrhoea?

Mild diarrhoea can occur. Stay hydrated and monitor symptoms. Seek urgent medical advice if diarrhoea is severe, watery, bloody, or accompanied by fever or significant abdominal pain.

7) What if I miss a dose?

Take it when you remember unless it is almost time for your next dose. Do not double the dose. If you’re unsure, ask a pharmacist.

8) Is Augmentin safe for children?

Augmentin can be used in children when appropriate. Dosing is commonly weight-based and depends on the formulation. Always use the correct measure and strength, and follow the instructions on the label.

9) Can Augmentin affect liver tests?

In some people, especially with prolonged or repeated courses, changes in liver enzymes or jaundice may occur. Stop only if advised and seek medical advice promptly if you notice yellowing of the skin/eyes or dark urine.

10) What should I do if I think I am allergic?

If you develop signs of a serious allergic reaction (difficulty breathing, swelling of the face/lips/throat, or severe rash), seek emergency care immediately. For milder rash, contact a healthcare professional for advice promptly.

11) Are there alternatives if I can’t take Augmentin?

Alternatives depend on the infection and your allergy history. A clinician or pharmacist can discuss options, including whether another antibiotic or supportive management is appropriate.

12) How does antibiotic resistance relate to Augmentin?

Taking antibiotics only when needed, completing the right course, and using appropriate doses help reduce the emergence of antibiotic-resistant bacteria. If your infection doesn’t respond as expected, it’s important to seek review rather than continuing automatically.

Important patient reminder

This page provides general information about Augmentin. Individual treatment decisions depend on your diagnosis, medical history, and other medicines. If you have questions about dosing, side effects, or interactions—especially if you have kidney disease, liver problems, or a history of drug allergy—speak with a pharmacist.