Cephalexin
Generic Name: cephalexin (sef a LEX in)
Brand names: Biocef, Keflex, Panixine, Zartan
What is cephalexin
Cephalexin is in a group of drugs called cephalosporin antibiotics and is used to fight bacteria in the body. It works by interfering with the bacteria's cell wall formation, causing it to rupture, and killing the bacteria.
Cephalexin is used to treat infections caused by bacteria, including upper respiratory infections, ear infections, skin infections, and urinary tract infections.
Cephalexin may also be used for purposes other than those listed.
Important information know about cephalexin
Do not use this medication if you are allergic to cephalexin, or to similar antibiotics, such as Ceclor, Ceftin, Cefzil, Duricef, Fortaz, Omnicef, Spectracef, Suprax, and others. Take this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Cephalexin will not treat a viral infection such as the common cold or flu.
Before taking cephalexin
Do not use this medication if you are allergic to cephalexin, or to other cephalosporin antibiotics, such as:
cefaclor (Ceclor);
cefadroxil (Duricef);
cefdinir (Omnicef);
cefditoren (Spectracef);
cefixime (Suprax);
cefprozil (Cefzil);
ceftazidime (Fortaz); or
cefuroxime (Ceftin).
Before using this cephalexin, tell your doctor if you are allergic to any drugs (especially penicillins), or if you have:
kidney disease;
liver disease;
a stomach or intestinal disorder such as colitis;
diabetes; or
if you are malnourished.
If you have any of these conditions, you may not be able to use cephalexin, or you may need a dosage adjustment or special tests during treatment.
The oral suspension (liquid) form of cephalexin may contain sugar. This may affect you if you have diabetes.
FDA pregnancy category B.
This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment. Cephalexin 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
How should I take cephalexin
Take the medication exactly as it was prescribed for you. Do not use the medication in larger amounts, or use it for longer than recommended by your doctor. Follow the instructions on your prescription label.
Take cephalexin with a full glass of water.
Measure the liquid form of cephalexin with a special dose-measuring spoon or cup, not a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.
Take this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Cephalexin will not treat a viral infection such as the common cold or flu.
This medication can cause you to have unusual results with certain medical tests. Tell any doctor who treats you that you are using cephalexin.
Store the tablets and capsules at room temperature away from moisture and heat. Store the liquid medicine in the refrigerator. Throw away any unused medication after 14 days.
What happens if I miss a dose
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.
What happens if I overdose
Seek emergency medical attention if you think you have used too much of this medicine.
Symptoms of a cephalexin overdose may include nausea, vomiting, stomach pain, diarrhea, and blood in your urine.
What should I avoid while taking cephalexin
Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or has blood in it, call your doctor. Do not use any medicine to stop the diarrhea unless your doctor has told you to.
Cephalexin side effects
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. Call your doctor at once if you have any of these serious side effects:
diarrhea that is watery or bloody;
seizure (convulsions);
fever, sore throat, and headache with a severe blistering, peeling, and red skin rash;
pale or yellowed skin, dark colored urine, fever, confusion or weakness;
easy bruising or bleeding, unusual weakness;
confusion, agitation, hallucinations (seeing things that are not there); or
urinating less than usual or not at all.
Less serious side effects are more likely to occur, such as:
mild nausea, vomiting, diarrhea;
dizziness, tired feeling;
joint pain; or
vaginal itching or discharge.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
What other drugs will affect cephalexin
Before using cephalexin, tell your doctor if you are using any of the following drugs:
a blood thinner such as warfarin (Coumadin);
meftormin (Fortamet, Glucophage, Riomet, Actoplus, Avandamet, Metaglip); or
probenecid (Benemid).
If you are using any of these drugs, you may not be able to use cephalexin, or you may need dosage adjustments or special tests during treatment.
There may be other drugs not listed that can affect cephalexin. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
How should I take cephalexin
Take the medication exactly as it was prescribed for you. Do not use the medication in larger amounts, or use it for longer than recommended by your doctor. Follow the instructions on your prescription label.
Take cephalexin with a full glass of water.
Measure the liquid form of cephalexin with a special dose-measuring spoon or cup, not a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.
Take this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Cephalexin will not treat a viral infection such as the common cold or flu.
This medication can cause you to have unusual results with certain medical tests. Tell any doctor who treats you that you are using cephalexin.
Store the tablets and capsules at room temperature away from moisture and heat. Store the liquid medicine in the refrigerator. Throw away any unused medication after 14 days.
What happens if I miss a dose
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.
What happens if I overdose
Seek emergency medical attention if you think you have used too much of this medicine.
Symptoms of a cephalexin overdose may include nausea, vomiting, stomach pain, diarrhea, and blood in your urine.
What should I avoid while taking cephalexin
Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or has blood in it, call your doctor. Do not use any medicine to stop the diarrhea unless your doctor has told you to.
Cephalexin side effects
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. Call your doctor at once if you have any of these serious side effects:
diarrhea that is watery or bloody;
seizure (convulsions);
fever, sore throat, and headache with a severe blistering, peeling, and red skin rash;
pale or yellowed skin, dark colored urine, fever, confusion or weakness;
easy bruising or bleeding, unusual weakness;
confusion, agitation, hallucinations (seeing things that are not there); or
urinating less than usual or not at all.
Less serious side effects are more likely to occur, such as:
mild nausea, vomiting, diarrhea;
dizziness, tired feeling;
joint pain; or
vaginal itching or discharge.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
What other drugs will affect cephalexin
Before using cephalexin, tell your doctor if you are using any of the following drugs:
a blood thinner such as warfarin (Coumadin);
meftormin (Fortamet, Glucophage, Riomet, Actoplus, Avandamet, Metaglip); or
probenecid (Benemid).
If you are using any of these drugs, you may not be able to use cephalexin, or you may need dosage adjustments or special tests during treatment.
There may be other drugs not listed that can affect cephalexin. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
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