Medically reviewed on January 2, 2018
What is amoxicillin and clavulanate potassium?
Amoxicillin is a penicillin antibiotic that fights bacteria in the body.
Clavulanate potassium is a beta-lactamase inhibitor that helps prevent certain bacteria from becoming resistant to amoxicillin.
Amoxicillin and clavulanate potassium is a combination medicine used to treat many different infections caused by bacteria, such as sinusitis, pneumonia, ear infections, bronchitis, urinary tract infections, and infections of the skin.
Amoxicillin and clavulanate potassium may also be used for purposes not listed in this medication guide.
You should not use this medicine if you have severe kidney disease, if you have had liver problems or jaundice while taking amoxicillin and clavulanate potassium, or if you are allergic to any penicillin or cephalosporin antibiotic, such as Amoxil, Ceftin, Cefzil, Moxatag, Omnicef, and others.
Before taking this medicine
You should not use this medicine if you are allergic to it, or if:
you have severe kidney disease (or if you are on dialysis);
you have had liver problems or jaundice while taking amoxicillin and clavulanate potassium; or
you are allergic to any penicillin or cephalosporin antibiotic, such as Amoxil, Ceftin, Cefzil, Moxatag, Omnicef, and others.
To make sure amoxicillin and clavulanate potassium is safe for you, tell your doctor if you have ever had:
It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
Amoxicillin and clavulanate potassium can pass into breast milk and may affect the nursing baby. Tell your doctor if you are breast-feeding.
Do not give this medicine to a child without medical advice.
The liquid or chewable tablet may contain phenylalanine. Talk to your doctor before using these forms of this medicine if you have phenylketonuria (PKU).
How should I take amoxicillin and clavulanate potassium?
Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.
Take the medicine every 12 hours, at the start of a meal to reduce stomach upset.
Do not crush or chew the extended-release tablet. Swallow the pill whole, or break the pill in half and take both halves one at a time. If you have trouble swallowing a whole or half pill, talk with your doctor about using another form of amoxicillin and clavulanate potassium.
The chewable tablet must be chewed before you swallow it.
Shake the liquid medicine well just before you measure a dose. Measure liquid medicine with the dosing syringe provided, or with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.
Use this medicine for the full prescribed length of time. Your symptoms may improve before the infection is completely cleared. Skipping doses may also increase your risk of further infection that is resistant to antibiotics. Amoxicillin and clavulanate potassium will not treat a viral infection such as the flu or a common cold.
This medicine can cause unusual results with certain lab tests for glucose (sugar) in the urine. Tell any doctor who treats you that you are using amoxicillin and clavulanate potassium.
Store the tablets at room temperature away from moisture and heat.
Store the liquid in the refrigerator. Throw away any unused liquid after 10 days.
What happens if I miss a dose?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
What should I avoid while taking amoxicillin and clavulanate potassium?
Avoid taking this medicine together with or just after eating a high-fat meal. This will make it harder for your body to absorb the medication.
Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, call your doctor. Do not use anti-diarrhea medicine unless your doctor tells you to.
Amoxicillin and clavulanate potassium side effects
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
severe stomach pain, diarrhea that is watery or bloody;
pale or yellowed skin, dark colored urine, fever, confusion or weakness;
loss of appetite, upper stomach pain, jaundice (yellowing of the skin or eyes);
easy bruising or bleeding;
little or no urination; or
severe skin reaction--fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.
Common side effects may include:
nausea, diarrhea; or
vaginal itching or discharge;
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
See also: Side effects (in more detail)
What other drugs will affect amoxicillin and clavulanate potassium?
Tell your doctor about all your current medicines and any you start or stop using, especially:
This list is not complete. Other drugs may interact with amoxicillin and clavulanate potassium, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Copyright 1996-2018 Cerner Multum, Inc. Version: 11.02.
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