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Drug Information For:


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Common Uses:

This medicine is a penicillin antibiotic used to treat infections caused by certain bacteria.

Before Using This Medicine:

Some medicines or medical conditions may interact with this medicine. INFORM YOUR DOCTOR OR PHARMACIST of all prescription and over-the-counter medicine that you are taking. DO NOT TAKE THIS MEDICINE if you are also taking a tetracycline antibiotic (eg, doxycycline). ADDITIONAL MONITORING OF YOUR DOSE OR CONDITION may be needed if you are taking probenecid; allopurinol; methotrexate; anticoagulants (eg, heparin, warfarin); aminoglycosides (eg, gentamicin); or birth control pills. DO NOT START OR STOP any medicine without doctor or pharmacist approval. Inform your doctor of any other medical conditions including a severe allergic reaction (eg, severe rash, hives, difficulty breathing, dizziness) to a cephalosporin (eg, cephalexin) or other beta-lactam antibiotic (eg, imipenem); if you have a stomach infection or diarrhea; kidney problems; allergies; pregnancy; or breast-feeding. USE OF THIS MEDICINE IS NOT RECOMMENDED if you have mononucleosis ("mono") or if you have recently received or will be receiving live oral typhoid vaccine. USE OF THIS MEDICINE IN CHILDREN under age 10 who have diarrhea or an infection of the stomach or bowel is not recommended. Discuss with your doctor the risks and benefits of giving this medicine to your child. Contact your doctor or pharmacist if you have any questions or concerns about using this medicine.

How to Use This Medicine:

Follow the directions for taking this medicine provided by your doctor. SHAKE WELL before each dose. Use a measuring device marked for medicine dosing. Ask your pharmacist for help if you are unsure of how to measure your dose. TAKE THIS MEDICINE BY MOUTH ON AN EMPTY STOMACH at least 1 hour before or 2 hours after eating. TAKE THIS MEDICINE WITH A FULL GLASS OF water (8 oz/240 ml). STORE THIS MEDICINE at room temperature, between 68 and 77 degrees F (20 and 25 degrees C), or in the refrigerator between 36 and 46 degrees F (2 and 8 degrees C). If you store this medicine at room temperature, DISCARD any unused medicine after 7 days. If you store this medicine in the refrigerator, DISCARD any unused medicine after 14 days. Store in a tightly closed container away from heat, moisture, and light. Do not store in the bathroom. TO CLEAR UP YOU INFECTION COMPLETELY, continue using this medicine for the full course of treatment even if you feel better in a few days. Do not miss any doses. IF YOU MISS A DOSE OF THIS MEDICINE, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. DO NOT use 2 doses at once.


DO NOT USE THIS MEDICINE if you are allergic to any ingredient in this medicine, to any penicillin antibiotic (eg, amoxicillin), or to any other beta-lactam antibiotic (eg, cephalexin). DO NOT EXCEED THE RECOMMENDED DOSE without checking with your doctor. Laboratory and/or medical test may be performed to monitor your progress or to check for side effects. KEEP ALL LABORATORY AND DOCTOR APPOINTMENTS while you are taking this medicine. SERIOUS AND SOMETIMES fatal liver problems have happened with this medicine. Call your doctor right away if you have symptoms of liver problems (eg, dark urine; pale stools; persistent loss of appetite; unusual nausea, stomach pain, or tiredness; yellowing of the skin or eyes). SERIOUS AND SOMETIMES fatal allergic reactions have rarely happened. Talk with your doctor. THIS MEDICINE ONLY WORKS AGAINST BACTERIA; it does not treat viral infections (eg, the common cold). BE SURE TO USE THIS MEDICINE for the full course of treatment. If you do not, the medicine may not clear up your infection completely. The bacteria could also become less sensitive to this or other medicines. This could make the infection harder to treat in the future. LONG-TERM OR REPEATED USE of this medicine may cause a second infection. Your doctor may want to change your medicine to treat the second infection. Contact your doctor if signs of a second infection occur. IF VOMITING OR DIARRHEA OCCURS, you will need to take care not to become dehydrated. Contact your doctor for instructions. MILD DIARRHEA IS COMMON with antibiotic use. However, a more serious form of diarrhea (pseudomembranous colitis) may rarely occur. This may develop while you use the antibiotic or within several months after you stop using it. CONTACT YOUR DOCTOR RIGHT AWAY if stomach pain or cramps, severe diarrhea, or bloody stools occur. Do not treat diarrhea without first checking with your doctor. HORMONAL BIRTH CONTROL (eg, birth control pills) may not work as well while you are using this medicine. To prevent pregnancy, use an extra form of birth control (eg, condoms). THIS MEDICINE MAY AFFECT CERTAIN LAB TEST RESULTS. Make sure laboratory personnel and your doctors know you are using this medicine. BEFORE YOU BEGIN TAKING ANY NEW MEDICINES, either prescription or over-the-counter, check with your doctor or pharmacist. FOR WOMEN: IF YOU PLAN ON BECOMING PREGNANT, discuss with your doctor the benefits and risks of using this medicine during pregnancy. THIS MEDICINE IS FOUND in breast milk. IF YOU ARE OR WILL BE BREAST-FEEDING while you use this medicine, check with your doctor or pharmacist to discuss the risks to your baby. IF YOU HAVE DIABETES, this medicine may cause false test results with some urine glucose tests. Check with your doctor before adjusting the dose of your diabetes medicine or changing your diet.

Possible Side Effects:

SIDE EFFECTS that may occur while taking this medicine include mild diarrhea, nausea, or vomiting. If they continue or are bothersome, check with your doctor. CONTACT YOUR DOCTOR IMMEDIATELY if you experience bloody stools; fever, chills, or sore throat; seizures; severe diarrhea; severe nausea or vomiting; stomach pain or cramps; unusual bruising or bleeding; unusual tiredness or weakness; vaginal irritation or discharge; or white patches in the mouth. AN ALLERGIC REACTION to this medicine is unlikely, but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist. This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your healthcare provider. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


IF OVERDOSE IS SUSPECTED, contact your local poison control center or emergency room immediately. Symptoms may include diarrhea, nausea, seizures, or vomiting.

Additional Information:

If your symptoms do not improve or if they become worse, check with your doctor. DO NOT SHARE THIS MEDICINE with others for whom it was not prescribed. DO NOT USE THIS MEDICINE for other health conditions. KEEP THIS MEDICINE out of reach of children and pets.

Copyright 2015 Wolters Kluwer Health, Inc.


- This information is not intended to substitute for professional medical advice. Be sure to contact your physician, pharmacist or other health care provider for more information about this medication. By searching these web site pages, you agree to our terms and conditions of use.