Augmentin (Amoxicillin / Clavulanate) — Patient Information

Augmentin is an antibiotic medicine used to treat a range of bacterial infections. It combines two active ingredients:

• Amoxicillin (a penicillin antibiotic)
• Clavulanate (a beta-lactamase inhibitor that helps amoxicillin work against certain resistant bacteria)

This guide is written for Australian patients and explains how Augmentin works, how it is typically taken, key safety information, and practical tips to help you use it effectively.

Basic product information

Note: Product strengths differ (for example, “875/125” or paediatric liquid strengths). Always use the strength and directions provided for your specific Augmentin product.

How Augmentin works (mechanism of action)

Augmentin works by targeting the way bacteria build their cell walls:

• Amoxicillin interferes with bacterial cell-wall formation, weakening and killing susceptible bacteria.
• Clavulanate blocks certain bacterial defence mechanisms (beta-lactamase enzymes). These enzymes can otherwise break down amoxicillin, making it less effective.

Result: Augmentin helps treat infections caused by bacteria that are sensitive to amoxicillin and those that may produce beta-lactamase.

Pharmacokinetics (how the body handles it)

Pharmacokinetics describe what the body does with a medicine—absorption, distribution, metabolism, and elimination.

• Absorption: Amoxicillin and clavulanate are absorbed from the gut. Taking the medicine with food can improve tolerability (especially stomach upset) and may support absorption.
• Distribution: The medicines distribute through body tissues and fluids. They can reach sites of infection where bacteria may be present.
• Metabolism: A portion of clavulanate is metabolised.
• Elimination: Amoxicillin is mainly eliminated via the kidneys (urine). Clavulanate is also cleared through renal and metabolic pathways.

Kidney function matters: People with reduced kidney function may require dose adjustments. If you have kidney disease, discuss the correct dose with a healthcare professional.

Typical uses and indications in Australia

Augmentin is commonly used for bacterial infections where the likely bacteria may be susceptible to amoxicillin/clavulanate.

Common indications include:

• Ear, nose and throat (ENT) infections (for example, some forms of sinusitis and otitis media)
• Dental infections and some dental abscesses
• Respiratory tract infections (for example, certain cases of bronchitis or pneumonia when bacterial infection is suspected/confirmed)
• Skin and soft tissue infections in appropriate situations
• Other infections where a clinician considers that amoxicillin/clavulanate is suitable

Important: Antibiotics do not treat viral infections such as colds, influenza, most sore throats, or many cases of bronchitis.

Timing and how to take Augmentin

How you take Augmentin depends on the strength and dosing schedule of your specific product.

General timing tips

• Try to take doses at evenly spaced times to keep antibiotic levels steady.
• If your regimen is twice daily, take one dose about 12 hours apart.
• If your regimen is three times daily, take doses about 8 hours apart.

Take with food

Augmentin is usually better tolerated when taken with food. Food may help reduce nausea and stomach upset.

Swallowing tablets

• Swallow tablets whole with water.
• Do not crush or split tablets unless your product packaging instructs otherwise.

Using liquid suspension

• Use the measuring device supplied or a calibrated dosing syringe.
• Shake the bottle well before each dose (follow the label instructions).
• Store the suspension as directed on the label (often refrigeration is not required unless stated).

Food interactions

Food and Augmentin: Taking Augmentin with meals is generally recommended for better stomach comfort. The medicine does not usually require fasting.

• Recommended: Take with food (or immediately after eating).
• If you get nausea: Taking with a larger meal or right after food may help.

Probiotics? Some people consider probiotics to reduce antibiotic-associated diarrhoea, but evidence varies. If you want to use a probiotic, discuss options with a pharmacist, particularly if you have a weakened immune system or serious underlying illness.

Alcohol and medicine interactions

Alcohol

Most guidance advises limiting or avoiding alcohol while taking antibiotics, as it can worsen side effects (such as dizziness, nausea, and diarrhoea) and may delay recovery.

Interactions with other medicines

Augmentin can interact with some medicines. Before starting, consider telling your pharmacist/doctor about all current medicines, including over-the-counter products and supplements.

Notable interactions may include:

• Warfarin and other blood-thinners: Antibiotics can affect bleeding risk in some people by altering gut bacteria and clotting-related lab results. Monitoring may be needed.
• Allopurinol: Using allopurinol with amoxicillin may increase the chance of skin rash in some patients.
• Oral contraceptives: Most antibiotics do not substantially reduce effectiveness, but gastrointestinal upset (vomiting/diarrhoea) can reduce absorption of oral contraceptives. Consider backup contraception if you have significant stomach upset.

Always check: If you’re unsure whether a medicine is compatible, ask a pharmacist.

Dosing: what to expect

Dosing depends on: the type and severity of infection, age, weight (for children), kidney function, and the exact product strength.

Because Augmentin comes in multiple strengths, there is no single universal dose for everyone. Use the instructions specific to your prescription product label.

Common dosing patterns (overview)

• Adults and adolescents: dosing is often given twice daily or three times daily depending on strength and infection.
• Children: dosing is usually weight-based and may be calculated per kilogram of body weight.

Do not change your dose or stop early just because you feel better—finishing the course helps reduce the chance of relapse and antibiotic resistance.

If you miss a dose

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

Safety profile and side effects

Like all medicines, Augmentin can cause side effects. Many are mild and improve as your body adjusts.

Common side effects

• Diarrhoea (sometimes mild)
• Nausea or mild stomach discomfort
• Vaginal yeast infection (in some people, especially after antibiotics)
• Skin rash (can occur; allergic-type rashes require urgent attention—see below)

Serious but less common reactions

Seek urgent medical help if you experience signs of a serious allergy or severe reaction, such as:

• Swelling of face, lips, tongue, or throat
• Difficulty breathing or wheezing
• Severe skin rash, blistering, peeling, or rash with fever
• Severe or persistent diarrhoea (especially if watery or bloody) with fever or stomach cramps

Liver effects

Rarely, antibiotics containing clavulanate may be associated with liver inflammation. Get medical advice promptly if you develop:

• Yellowing of the skin or eyes (jaundice)
• Dark urine
• Severe fatigue with abdominal pain

Antibiotic-associated diarrhoea

Some diarrhoea is expected with antibiotics, but severe diarrhoea can be a warning sign of more serious intestinal problems. If diarrhoea is severe, persistent, or accompanied by blood or fever, contact a healthcare professional immediately.

Who should take extra care

• People with a history of penicillin allergy or previous allergic reactions to beta-lactam antibiotics
• People with kidney impairment (dose adjustment may be needed)
• People with a history of liver problems related to antibiotic use
• People with a tendency to thrush or recurrent yeast infections

Practical use tips (get the best outcome)

Finish the course

Even if you feel better after a few doses, follow the full course as directed on the label. Stopping early can allow bacteria to rebound.

Manage stomach side effects

• Take with food.
• Stay well hydrated.
• If nausea occurs, taking the dose with a heavier meal may help.

Prevent dehydration if diarrhoea occurs

• Drink fluids regularly.
• Consider oral rehydration solutions if advised by a pharmacist.

Do not share antibiotics

Augmentin is tailored to specific infections. Sharing or using leftover antibiotics can be unsafe and may not treat the cause.

Keep track of strengths

Augmentin products vary in strength. Always check that you have the correct formulation for your dosing instructions.

Alternatives to Augmentin

Alternative antibiotics may be considered depending on the infection, likely bacteria, allergy history, and local resistance patterns. Possible alternatives include:

• Amoxicillin alone (not combined with clavulanate) for infections where beta-lactamase resistance is less likely
• Cephalosporins (in some cases)
• Macrolides (for specific bacterial infections or penicillin intolerance)
• Doxycycline or other agents (depending on infection type and organism)

Non-antibiotic approaches: For certain conditions, supportive care (pain relief, fluids, rest, nasal saline, etc.) is important. An appropriate assessment helps determine whether antibiotics are required.

Always choose alternatives with professional guidance, especially if you have had allergic reactions.

Market and legal context in Australia

In Australia, antibiotics are regulated medicines and are generally supplied based on Australian prescribing and dispensing frameworks. Pharmacies must follow requirements around medicine safety, supply, and patient counselling.

Key points relevant to Australian consumers:

• Medicine supply is supported by Australian health regulations and pharmacy processes.
• Pharmacists can advise on correct use, interactions, side effects, and what to do if you miss a dose.
• Antibiotic stewardship is strongly emphasised to reduce inappropriate antibiotic use and resistance.

Local clinical practice aligns with national and state-based guidance on antibiotic selection and duration for common infections.

Recent guidance and antibiotic stewardship (what to know)

Australia places emphasis on antibiotic stewardship—using the right antibiotic, at the right dose, for the right duration. This helps:

• Improve patient outcomes
• Reduce side effects
• Limit the development of antibiotic resistance

General principles often highlighted in stewardship efforts include:

• Antibiotics should be used for suspected or confirmed bacterial infections.
• If symptoms improve, you still typically need to complete the intended course.
• Do not use antibiotics for viral illnesses.

If your symptoms worsen, don’t improve after the expected time, or you develop new symptoms (such as severe rash or severe diarrhoea), seek timely medical advice.

Delivery, packaging and availability in Australia

Augmentin availability may vary by form and strength (tablets vs liquid suspension). Many online pharmacies in Australia provide:

• Clear listing of product form and strength
• Options for delivery within metro and regional areas
• Discrete packaging where available

Delivery timeframes: These depend on stock availability and your location. At checkout, an online pharmacy typically displays expected delivery estimates.

Storage: Follow the storage instructions on the packaging. Some liquid preparations may have specific storage requirements (such as room temperature vs refrigeration) depending on the product.

Check your order: When your medicine arrives, confirm the strength, form, and dosing instructions match what you expected.

FAQ — Augmentin (Amoxicillin / Clavulanate)

1) Is Augmentin effective for viral infections?

No. Augmentin is an antibiotic that treats bacterial infections. It will not treat viruses such as common colds or most cases of flu-like illness.

2) How quickly will I feel better?

Many people start to notice improvement within 24–72 hours, depending on the infection and severity. If there is no improvement after the expected timeframe, contact a healthcare professional.

3) Can I take Augmentin with food?

Yes—often it’s recommended. Taking Augmentin with food can improve stomach comfort and reduce nausea.

4) What if I forget a dose?

Take it when you remember unless it is close to the next dose. Do not double up to compensate for a missed dose.

5) Can I drink alcohol while on Augmentin?

It’s best to limit or avoid alcohol during treatment. Alcohol can worsen side effects like nausea and diarrhoea and may delay recovery.

6) What should I do if I get diarrhoea?

Mild diarrhoea can occur with antibiotics. However, seek urgent advice if diarrhoea is severe, persistent, watery or bloody, or if you develop fever or significant abdominal pain.

7) Am I allergic? What are signs of an allergic reaction?

Allergic reactions can include swelling of the face/lips/tongue, hives, wheezing, or difficulty breathing. Severe rash with blistering or peeling is also concerning. Seek urgent medical help if these occur.

8) Can Augmentin interact with warfarin?

Yes. Antibiotics may affect clotting control in some people taking warfarin. If you take warfarin or another blood thinner, ask your pharmacist or clinician about monitoring.

9) Should I stop when I feel better?

In most cases, you should complete the full course as directed on the label to reduce the chance of relapse and resistance.

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

Yes. Alternatives depend on the infection and your allergy history. Your pharmacist can help discuss options and suitability.

When to seek medical advice

Contact a healthcare professional promptly if:

• You develop signs of a serious allergic reaction
• You experience severe or persistent diarrhoea
• You do not improve within the expected timeframe
• You develop symptoms such as jaundice or dark urine
• Your infection seems to worsen despite treatment

Reminder: This information is designed to help you use Augmentin safely and effectively. Always follow the directions provided for your specific product and ask a pharmacist if you have questions about dosing, interactions, or side effects.