Prescription Icon Prescription Required
IMPORTANT NOTE: A valid Prescription is required to be mailed or faxed to complete this order. I acknowledge that I will need to be contacted to complete a health profile before my order is shipped.


What is Keflex?

Keflex is an oral tablet made up of a cephalosporin antibiotic called cephalexin. We carry the generic alternative of this medication in 250mg, and 500mg!

What is Keflex used for?

Keflex is used to treat bacterial infections. These types of infections are caused by bacteria and can be located in the upper respiratory, ear, skin, urinary tract, and bones; there are many other places in the body a bacterial infection can occur. Examples of these infections include pneumonia, tuberculosis, gastritis, and food poisoning. Most bacterial infections cause fevers and discomfort and can be relieved with an antibiotic!

How does Kelflex work?

Keflex is effective in treating bacterial infections because it is an antibiotic capable of fighting and stopping the growth of bacteria in the body, the sole cause of bacterial infections.

Use Keflex exactly the way your doctor has directed you too.

Avoid using this medication in smaller or larger amounts and using it for a condition that it has not been prescribed for. Do not share this medication with others.

Take Keflex by mouth with or without food. This medication is commonly taken every 6-12 hours; this helps keep a consistent level of drugs in the system for the most effectiveness.

Store this medication at room temperature. Protect from heat, moisture, and light.


Do not use Keflex (cephalexin)

You should not combine this drug with other drugs like cefaclor (Ceclor, Raniclor), cefadroxil (Duricef), cefazolin (Ancef, Kefzol), cefdinir (Omnicef), cefditoren (Spectracef), cefpodoxime (Vantin), cefprozil (Cefzil), ceftibuten (Cedax), cefuroxime (Ceftin), among others; do not use this product if you take any of these listed drugs.

Dose adjustment or special precautions may be required

Tell your doctor if you have an allergy against penicillin’s or any other drug allergies, if you’ve ever had kidney disease, a history of intestinal problems such as colitis, or a medical condition that requires you to take a blood thinner.


Tell your doctor if you are pregnant; this medication is not expected to harm an unborn baby but that does not mean it doesn’t have potential too.

This medication passes into breast milk. Consult your doctor if you are breast feeding to find out about the benefits and risks.

This medication can cause unusual test results in some laboratory tests; tell all health care professionals what medications you are taking.

Side Effects

Common side effects of Keflex (cephalexin) may include:

diarrhea; dizziness, feeling tired; headache, joint pain; or vaginal itching or discharge.

The above side effects should not alarm you.

Serious side effects of Keflex (cephalexin) may include:

severe stomach pain, diarrhea that is watery or bloody; jaundice (yellowing of the skin or eyes); easy bruising, unusual bleeding (nose, mouth, vagina, or rectum), purple or red pinpoint spots under your skin; little or no urination; or agitation, confusion,  or hallucinations.

If you have any of the above side effects, contact your doctor right away.

Contact your doctor if you notice signs of…

severe skin reaction--fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.


How long until my symptoms begin to disappear?

Peak levels of the drug will occur after one hour of taking the medication however symptoms may not disappear until 48 hours after taking the medication.

What is the average dose for an adult with an upper respiratory tract infection?

This medication should be taken every 6 – 12 hours. Do not exceed more than 4g (4000mg) in a day.

If you are an adult wanting to take Keflex every 6 hours; take 250-333mg

If you are an adult wanting to take Keflex every 12 hours; take 500mg

Can children use this medication?

Yes. Depending on the condition, it may be used on a child as young as 1 year old. Talk to your doctor about more information regarding children and Keflex!

Will this medication work for the common cold?

No. This medication is for bacterial infections. The common cold is a viral infection. Other viral infections that are not treated with Keflex include smallpox, the flu, measles, mumps, shingles, chicken pox, hepatitis, herpes and cold sores, polio and rabies. Bacterial infections that can be treated with Keflex include boils, impetigo, folliculitis, cellulitis, salmonella, chlamydia, gonorrhea and strep throat.

Call To Complete

Need Help?
Call Our CareTeam


Our CareTeam Member will guide you to complete your order