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Augmentin XR

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Augmentin XR

AUGMENTIN XR®
(amoxicillin and clavulanate potassium) Extended-release Tablets

Augmentin XR

DRUG DESCRIPTION

AUGMENTIN XR (amoxicillin and clavulanate potassium) extended release tablet for oral use is an antibacterial combination consisting of the semisynthetic antibacterial amoxicillin (present as amoxicillin trihydrate and amoxicillin sodium) and the β-lactamase inhibitor clavulanate potassium (the potassium salt of clavulanic acid). Amoxicillin is an analog of ampicillin, derived from the basic penicillin nucleus 6-aminopenicillanic acid. The amoxicillin trihydrate molecular formula is C16H19N3O5S•3H2O, and the molecular weight is 419.45. Chemically, amoxicillin trihydrate is (2S,5R,6R)-6-[(R)-(-)-2-Amino-2-(p-hydroxyphenyl)acetamido]-3,3dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid trihydrate and may be represented structurally as:

Amoxicillin trihydrate - Structural Formula Illustration

The amoxicillin sodium molecular formula is C16H18N3NaO5S, and the molecular weight is 387.39. Chemically, amoxicillin sodium is [2 -[2α,5α,6β(S*)]]-6-[[Amino(4hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2carboxylic acid monosodium salt and may be represented structurally as:

Amoxicillin sodium - Structural Formula Illustration

Clavulanic acid is produced by the fermentation of Streptomyces clavuligerus. It is a βlactam structurally related to the penicillins and possesses the ability to inactivate a wide variety of β-lactamases by blocking the active sites of these enzymes. Clavulanic acid is particularly active against the clinically important plasmid-mediated β-lactamases frequently responsible for transferred drug resistance to penicillins and cephalosporins. The clavulanate potassium molecular formula is C8H8KNO5, and the molecular weight is 237.25. Chemically, clavulanate potassium is potassium (Z)-(2R,5R)-3-(2-hydroxy ethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]-heptane-2-carboxylate, and may be represented structurally as:

Clavulanic acid - Structural Formula Illustration

Inactive Ingredients

Citric acid, colloidal silicon dioxide, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, sodium starch glycolate, titanium dioxide, and xanthan gum.

Each tablet of AUGMENTIN XR contains 12.6 mg (0.32 mEq) of potassium and 29.3 mg (1.27 mEq) of sodium.

What are the possible side effects of amoxicillin and clavulanate potassium (Augmentin, Augmentin ES-600, Augmentin XR)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using this medicine and call your doctor at once if you have a serious side effect such as:

  • diarrhea that is watery or has blood in it;
  • pale or yellowed skin, dark colored urine, fever, confusion or weakness;
  • easy bruising or bleeding;
  • skin rash, bruising, severe tingling, numbness, pain, muscle weakness;
  • agitation,...

Read All Potential Side Effects and See Pictures of Augmentin XR »

What are the precautions when taking amoxicillin clavulanic potassium (Augmentin XR)?

Before taking this product, tell your doctor or pharmacist if you are allergic to amoxicillin or clavulanic acid; or to penicillin or cephalosporin antibiotics; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell the doctor or pharmacist your medical history, especially of: liver disease (including liver problems caused by previous use of amoxicillin/clavulanic acid), kidney disease (such as requiring dialysis), a certain type of viral infection (infectious mononucleosis).

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and...

Read All Potential Precautions of Augmentin XR »

Last reviewed on RxList: 12/12/2013
This monograph has been modified to include the generic and brand name in many instances.

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Augmentin XR - User Reviews

Augmentin XR User Reviews

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Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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