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Buy Amoxicillin / Clavulanic Acid online in the UK – fast delivery from a trusted pharmacy

★★★★☆ 4.5 (293 reviews)
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Choose dosage and pack size
DosagePackagePrice per DosePrice
400/57mg120 pills£2.82
£375.65
£338.08
Best Price Popular
400/57mg90 pills£3.37
£336.83
£303.14
400/57mg60 pills£3.49
£232.90
£209.61
400/57mg30 pills£4.17
£138.98
£125.08
£338.08
Quantity:
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Airmail 14–21 days
Express delivery 5–9 days
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Free Airmail from £150.26
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Crypto discount −10%

What is Amoxicillin/Clavulanic Acid

Amoxicillin with clavulanic acid is a prescription antibiotic. It combines amoxicillin, which fights many bacteria, with clavulanic acid, which blocks enzymes that some bacteria use to resist the drug. The combination broadens activity compared with amoxicillin alone and is available as tablets, chewables, and suspensions. In online pharmacies, you will often see it labeled by the dosage, such as 875 mg/125 mg or 400 mg/57 mg per unit, to reflect both ingredients. The product is intended for bacterial infections and is not effective against viruses or colds.

How it works

Amoxicillin stops bacteria from building their cell walls, which leads to the death of the germs. Clavulanic acid inhibits beta-lactamase enzymes that some bacteria produce to destroy antibiotics. By blocking these enzymes, clavulanic acid helps amoxicillin stay active longer and broadens the range of effective bacteria. This makes the combination useful against several resistant strains that plain amoxicillin would miss. It is important to remember that this medicine does not treat viral infections and should be used only as prescribed.

When it is used

Clinicians prescribe amoxicillin/clavulanic acid for sinusitis, pneumonia, ear infections, skin infections, and certain dental infections. It also helps with some urinary tract infections caused by susceptible bacteria. A healthcare professional decides if this combo is appropriate based on the illness, the local pattern of resistance, and the patient’s history. People with a known penicillin allergy should avoid this medicine and talk to their doctor about safer options.

How to take it

Take the medicine exactly as directed on the label or by your pharmacist. It can be taken with or without food, though taking it with food may lessen stomach upset for some. If you are using the suspension, shake it well and use the provided measuring device. Do not skip doses or finish the course too soon, even if you feel better. Stopping early can allow the infection to return and may increase the risk of resistant bacteria.

Possible side effects and safety tips

Most people tolerate this medicine well. Common side effects include upset stomach, diarrhea, nausea, and mild skin rash. Some patients may experience vomiting or yeast infections. Rare but serious reactions can occur, such as severe allergic reactions or signs of liver problems. Seek urgent care if you have trouble breathing, swelling of the face or tongue, severe skin blistering, yellowing of the skin, dark urine, or persistent vomiting. Tell your clinician about any persistent or unusual symptoms.

Drug interactions and safety tips

Inform your doctor about all medicines you take, including vitamins and herbal supplements. Amoxicillin/clavulanic acid can interact with certain drugs, such as some birth control pills, anticoagulants, and other antibiotics. In some people, changes in gut flora from antibiotics can affect how other medicines work. Do not share this medicine with others, and use it only for the infection it is prescribed to treat. If you have kidney disease, liver problems, or gout, discuss dose adjustments and warnings with your healthcare provider.

Storage and handling

Store tablets and chewables at room temperature away from moisture and heat. The suspension should be refrigerated and shaken before each dose; discard any unused portion after the recommended time frame. Keep all medicines out of reach of children and check the expiration date on the bottle. Proper storage helps maintain potency and reduces the chance of giving a degraded product.

Customer review and overall impression

Many customers report clear improvement when the course is followed as prescribed. They appreciate the broader coverage of this combination, especially for stubborn respiratory or dental infections. Some note mild stomach upset or loose stools, which often resolves with food or a short adjustment. A few mention the taste of the suspension and prefer brands with smoother flavors. Overall, users value clear dosing guidance, reliable supply, and pharmacist support to answer questions about when to take the medicine and what to expect during recovery.

✈️

Airmail

14–21 days. Free from £150.26 .

Express delivery

5–9 days. £22.54

🔒

Crypto discount

−10% when paying with cryptocurrency.

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Reorder discount

−10% on all repeat orders.

📦 Packaging and discretion

All orders are packed in neutral, unbranded boxes with no product name on the outside.

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Medically reviewed by
James Cartwright
GPhC-Registered Pharmacist; Chief Pharmacist & Head of Pharmacy