Augmentin 625 Duo: Uses, How It Works, Side Effects

What is Augmentin 625 Duo used for?

Augmentin 625 Duo is used for short courses to treat bacterial infections in adults and children over 12, when a doctor judges that the bacteria are likely to respond to it.

• Ear, nose and throat infections, such as sinusitis, middle ear infection and repeated tonsillitis
• Chest infections, such as flare-ups of chronic bronchitis or COPD and some types of pneumonia
• Urinary tract infections, such as bladder and kidney infections
• Skin and soft tissue infections, such as boils, abscesses, cellulitis and infected wounds
• Dental infections, such as a tooth abscess
• Some bone, joint and abdominal infections, and infections after childbirth or abortion, usually under hospital care

How does Augmentin 625 Duo work?

Augmentin 625 Duo combines two medicines. Amoxicillin, a penicillin antibiotic, stops bacteria from building their cell walls, so they burst and die. Some bacteria defend themselves by making beta-lactamase enzymes that destroy amoxicillin. Clavulanic acid blocks these enzymes, so amoxicillin can work against many bacteria that would otherwise resist it. The combination kills bacteria but has no effect on viruses.

What happens in your body after you take it

1. You swallow the tablet

   Taken whole with water at the start of a meal, the film-coated tablet breaks down in the stomach and releases both medicines. Food helps clavulanic acid to be absorbed well and lowers the chance of an upset stomach.

2. Both medicines enter the blood

   Amoxicillin and clavulanic acid are absorbed from the small intestine and reach their highest levels in the blood about 1 to 1.5 hours after the dose. Only a small part of each is bound to blood proteins, so most of it is free to spread into body tissues and fluids.

3. Clavulanic acid disarms the bacterial enzymes

   At the site of infection, some bacteria release beta-lactamase enzymes that can break amoxicillin apart. Clavulanic acid binds to many of these enzymes and switches them off, so amoxicillin is not destroyed.

4. Amoxicillin breaks the bacterial wall

   Amoxicillin attaches to penicillin-binding proteins, which bacteria use to build their cell walls. Without a strong wall, growing bacteria burst and die, and the immune system clears the infection over the following days.

5. Why the whole course matters

   Each dose kills more bacteria, but some survive longer than others. Taking every dose for as long as the doctor prescribes helps clear the infection and lowers the chance that resistant bacteria are left behind.

6. Side effects in the gut

   The medicine also kills some of the helpful bacteria that normally live in the gut and other parts of the body. This is why diarrhoea and thrush, a yeast infection of the mouth or vagina, are common side effects.

7. The kidneys clear it

   Both medicines are removed quickly, mostly by the kidneys into the urine, and each has a half-life of about 1 hour. This is why doses are spaced through the day, and why people with kidney disease may need a different dose.

How to take Augmentin 625 Duo

Take Augmentin 625 Duo exactly as your doctor prescribes or as printed on the pack. The number of doses a day and the length of the course depend on the infection, your kidney function and your doctor's advice.

• It is usually taken twice a day, about 12 hours apart, and sometimes three times a day for more severe infections, as the doctor prescribes.
• Take it at the start of a meal, with a glass of water. Swallow the tablet whole; do not break or chew it.
• Complete the course your doctor prescribes, even if you feel better sooner. Stopping early can let the infection come back and adds to antibiotic resistance.
• If you miss a dose, take it when you remember, unless the next dose is nearly due. Do not take two doses together.
• The course is usually short. The label says treatment should not go beyond 14 days without a doctor's review.
• Augmentin 625 Duo tablets are not recommended for children aged 12 and under. Other forms with different strengths are made for children and are given only on a doctor's advice.
• Do not keep leftover tablets for later or share them with anyone else. An antibiotic should be taken only for an infection a doctor has diagnosed.

Augmentin 625 Duo dosage: how to take it

Side effects of Augmentin 625 Duo

Most people take Augmentin 625 Duo without serious problems, but side effects in the stomach and gut are common, and diarrhoea is the most frequent. You can report side effects to the Pharmacovigilance Programme of India helpline, 1800-180-3024.

Uncommon or mild

• Diarrhoea or loose stools
• Nausea or vomiting (less likely if it is taken at the start of a meal)
• Thrush: white patches in the mouth, or itching and discharge from the vagina
• Indigestion or stomach discomfort
• Mild skin rash or itching
• Headache or dizziness

Augmentin 625 Duo side effects: common and serious

Who should be careful

Augmentin 625 Duo is not suitable for everyone. Tell your doctor before taking it if any of the following apply to you.

• Allergy to penicillin, amoxicillin, cephalosporins or any other antibiotic: it must not be taken by people who have had an allergic reaction to penicillins or cephalosporins
• Jaundice or liver problems in the past after taking amoxicillin with clavulanic acid: it must not be taken again
• Liver disease: the doctor may check your liver function during treatment
• Kidney disease: a lower dose or fewer doses a day may be needed
• Glandular fever (infectious mononucleosis): amoxicillin very often causes a rash in people with this viral infection, so it should be avoided
• Pregnancy: it is used in pregnancy only when a doctor judges it necessary. One study linked its use in women whose waters broke early, before labour, with a serious bowel problem in newborns
• Breastfeeding: small amounts pass into breast milk. Watch the baby for diarrhoea, thrush, rash or poor feeding, and tell your doctor
• Long courses: other germs such as yeasts can overgrow, and the doctor may check your blood, liver and kidney function
• Colds, flu and most coughs and sore throats are caused by viruses: this antibiotic does not help them

Medicines and things that interact with Augmentin 625 Duo

Augmentin 625 Duo can interact with some medicines. Tell your doctor or pharmacist about everything you take, including medicines bought without a prescription.

• Blood thinners such as warfarin or acenocoumarol: the blood can take longer to clot, so your INR may need extra checks
• Methotrexate: penicillins can slow its removal from the body and raise the risk of side effects
• Allopurinol (for gout): skin rashes become more likely
• Probenecid: raises amoxicillin levels; using them together is not recommended
• Mycophenolate mofetil (used after organ transplants): its level in the blood may fall, so the doctor may monitor you
• Birth control pills: the Indian label says antibiotics may make the combined pill less effective, and vomiting or severe diarrhoea can also stop the pill being absorbed. Ask your doctor whether you need extra contraception
• Urine sugar tests: some older urine glucose tests can give a false positive result

If someone takes too much

Storage

Store at a temperature not above 25°C, in the original pack to protect the tablets from moisture, and out of the reach of children. Do not use after the expiry date.

Regulatory status in India

Prescription antibiotic sold in India. The combination of amoxicillin 500 mg and clavulanic acid 125 mg is not on the CDSCO list of prohibited medicines and was not among the 156 fixed-dose combinations banned in August 2024. Some other combinations containing amoxicillin are banned, for example amoxicillin with dicloxacillin and lactobacillus (2024) and amoxicillin with tinidazole (2016).

Other brands with the same medicine

Other brands with the same two ingredients at the same strength (amoxicillin 500 mg + clavulanic acid 125 mg) include Clavam 625 and Moxikind-CV 625. They work the same way. Augmentin 1g Duo contains more amoxicillin (875 mg), and children's syrups have different strengths. Check the label for the ingredients and strength, and do not switch without asking your doctor or pharmacist.

Other strengths and forms

Augmentin Duo is sold by GSK India as more than one tablet strength and as suspensions. Besides the 625 tablet (amoxicillin 500 mg with clavulanic acid 125 mg), there is a 1 g tablet (amoxicillin 875 mg with clavulanic acid 125 mg), and powders to make an oral suspension, such as Duo suspension and DDS, which have different strengths. Always check the label of the one you have; the strengths are not interchangeable.

Common questions