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Keflex (cephalexin)

It is a cephalosporin antibiotic. It fights the bacteria in your body and keeps them away. It does not work on virus infections.

Keflex (cephalexin) capsules


The dosage of Keflex (cephalexin) can vary depending on the specific condition being treated, the severity of the infection, and the individual patient's medical history. It is important to follow the instructions provided by your healthcare provider or the directions on the prescription label.

For most infections, the typical adult dosage of oral Keflex is 250-500 mg every 6 hours or 500-1000 mg every 12 hours. However, the dosage may be adjusted based on the severity of the infection and the patient's response to treatment.

For children, the dosage is usually based on their weight. The recommended pediatric dosage is 25-50 mg/kg/day, divided into 2-4 equal doses.

The duration of treatment with Keflex can vary depending on the type and severity of the infection. It is important to complete the full course of treatment prescribed by your healthcare professional, even if you start feeling better before the medication is finished. Skipping doses or stopping the medication prematurely may result in incomplete treatment and the return of the infection.


This medicine is a semisynthetic cephalosporin antibacterial drug.This medicine is intended for oral uses only. It has the molecular formula C16H17N3O4S•H2O. The molecular weight is this medicine is365.41. Each capsule of this medicine contains 250 mg of cephalexin. The capsules also contain carboxymethylcellulose sodium, Dimethicone, FD&C Blue, gelatin, FD&C Yellow,magnesium stearate, microcrystalline cellulose, D&C Yellowand titanium dioxide.


This medicine is used to deal with infections, which are caused by germs. Some, such common infections are ear infections, respiratory infections, skin infections, and UTI. It can also be used before dental procedures for patients with heart conditions to prevent any type of infection.

Side Effects

Like every other medicine even Keflex can have side effects. It is important that you consult your doctor and learn more about the side effects of this medicine. You should get immediate medical help if you see any signs of an allergic reaction after using the medicine. The symptoms can vary from hives to difficulty in breathing and even swelling of your face, lips or tongue. Apart from these, there are some other side effects which a patient usually reports. Some of them are listed below:

Also, there are some less common side effects of this medicine,which are listed below:

It is a cephalosporin antibiotic


You need to consult your doctor before you start using this medicine. The doctor will try to know about your medical history. You need to let the doctor know if you are allergic to this medicine or to any ingredients of this medicine or any other type of allergies. The inactive ingredients of this medicine may cause allergies or other problems. If you have any medical history of kidney disease or stomach or intestinal diseases, inform your doctor immediately. The liquid form of this medicine may also contain sugar, which can be harmful for diabetic patients. Also, share the details of any prescription or non-prescription medicines or any other herbal products that you may be using. Especially, if you are getting operated share all these details with the user. This medicine is known to interact with other medicines, which increases the chances of side effects in a patient.

Pregnancy and Keflex

This medicine is known to cause side effects in pregnant women, hence consult your doctor before you use this medicine. This medicine can also pass into the breast milk and can adversely affect the child. Consult your doctor before using this medicine.

Some frequently asked questions about Cephalexin

What is cephalexin?

Cephalexin is an antibiotic medication belonging to the cephalosporin class. It is used to treat various bacterial infections.

What conditions can cephalexin treat?

Cephalexin is commonly prescribed for respiratory tract infections (such as bronchitis, pneumonia, and strep throat), skin and soft tissue infections, urinary tract infections (UTIs), and certain bone and joint infections.

How is cephalexin taken?

Cephalexin is typically taken orally in the form of capsules or tablets. The dosage and duration of treatment will depend on the specific infection and the severity of the condition. It is important to follow the prescribed instructions and complete the full course of treatment.

Are there any side effects associated with cephalexin?

Like any medication, cephalexin can cause side effects. Common side effects may include diarrhea, nausea, vomiting, stomach pain, and skin rash. If you experience severe or persistent side effects, it is important to contact your healthcare provider.

Can cephalexin interact with other medications?

Cephalexin may interact with certain medications, including blood thinners (such as warfarin) and probenecid. Inform your healthcare provider about all the medications you are currently taking to avoid potential interactions.

Can cephalexin be used during pregnancy or while breastfeeding?

It is important to consult with your healthcare provider before using cephalexin during pregnancy or while breastfeeding. They can evaluate the potential risks and benefits and provide guidance based on your specific situation.

What should I do if I miss a dose of cephalexin?

If you miss a dose, take it as soon as you remember. However, if it is close to the time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not double the dose to make up for the missed one.

How should cephalexin be stored?

Cephalexin should be stored at room temperature, away from moisture and heat. Follow the storage instructions provided with the specific product or consult your pharmacist for guidance.

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