Do not use this medication if you are allergic to amoxicillin or clavulanate potassium, or if you have ever had liver problems caused by this medication.
Do not use if you are allergic to any other penicillin antibiotic, such as ampicillin (Omnipen, Principen), carbenicillin (Geocillin), dicloxacillin (Dycill, Dynapen), oxacillin (Bactocill), penicillin (Beepen-VK, Ledercillin VK, Pen-V, Pen-Vee K, Pfizerpen, V-Cillin K, Veetids), and others.
Before taking amoxicillin and clavulanate potassium, tell your doctor if you have liver disease (or a history of hepatitis or jaundice), kidney disease, or mononucleosis, or if you are allergic to a cephalosporin antibiotic, such as cefdinir (Omnicef), cefprozil (Cefzil), cefuroxime (Ceftin), cephalexin (Keflex), and others.
If you switch from one tablet form to another (regular, chewable, or extended-release tablet), take only the new tablet form and strength prescribed for you. This medicine may not be as effective or could be harmful if you do not use the exact tablet form your doctor has prescribed.
Amoxicillin and clavulanate potassium can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
Amoxicillin and clavulanate potassium can make birth control pills less effective. Ask your doctor about using a non-hormone method of birth control (such as a condom, diaphragm, spermicide) to prevent pregnancy while taking amoxicillin and clavulanate potassium.