Keflex (Cephalexin)

Prescription Prescription Required     Customer Reviews
Keflex Brand
Dosage Quantity & Price
Cephalexin (Generic alternate to Keflex) Generic
Dosage Quantity & Price
  • We are Certified
  • Cipa Certified Canadian
  • Norton Shopping Guarantee
  • 5 Star Excellence award from Shopper Approved for collecting at least 100 5 star reviews

Table of contents:

Keflex (Cephalexin) is an antibiotic used to treat certain types of infections caused by bacteria. Cephalexin belongs to in a group of drugs called cephalosporin antibiotics and it works by fighting bacteria in the body. It is used to treat infections such as ear infections, upper respiratory infections, urinary tract infections, and skin infections.

Cefalexin, also spelled cephalexin, is an antibiotic that can treat a number of bacterial infections. It kills gram-positive and some gram-negative bacteria by disrupting the growth of the bacterial cell wall. It can also be used to prevent infection after surgery.

Cefalexin is a beta-lactam antibiotic within the class of first-generation cephalosporins. It works similarly to other agents within this class, including intravenous cefazolin, but can be taken by mouth. Cefalexin can treat certain bacterial infections, including those of the middle ear, bone, joint, skin, and urinary tract. It may also be used for certain types of pneumonia and strep throat and to prevent bacterial endocarditis.

Uses and Dosage

Cephalexin is available in two different dosage forms: capsules and tablets. These tablets and capsules should be taken with a full glass of water. Swallow the capsules whole and do not crush, chew, or break them. The usual dose of Keflex is 250 mg every 6 hours, or 500 mg every 12 hours, depending on the severity of the infection. Depending on the severity of the infection, the doctor may adjust the dosage.

It is important to use cephalexin for the full length of the prescribed course, even if symptoms appear to improve quickly. Omitting doses can increase the risk of infection that is resistant to medication. This medication will not be effective in treating viral infections, such as the flu or a common cold.

Side effect

Keflex may cause serious side effects including:

  • Cold hands and feet
  • Diarrhea that is watery or bloody
  • Easy bruising
  • Feeling light-headed or short of breath
  • Fever
  • Seizure
  • Pain in your side or lower back
  • Painful urination
  • Pale skin
  • Purple or red spots under your skin
  • Severe stomach pain
  • Unusual bleeding and tiredness
  • Yellowed skin
  • Dark colored urine

The most common side effects of Keflex include:

Form and strength

Keflex and its generic alternative Cephalexin are available in the following forms and strength:

Keflex Capsule

  • 500 mg

Cephalexin Tablet

  • 250 mg
  • 500 mg


  • If you have existing or past kidney complications, your body may be unable to effectively metabolize this drug. This may cause an increase in the amount of the drug in your system, resulting in more severe side effects. Your doctor may adjust your dose depending on the severity of your kidney disease. It is important to discuss with your doctor whether it is safe for you to take this drug.
  • Studies conducted on animals have not indicated any risks associated with the drug in pregnant animals. However, due to the lack of clinical studies conducted on pregnant individuals, it is recommended to consult with your doctor if you are pregnant or planning to become pregnant.
  • The drug is present in breast milk and may cause side effects in infants who are breastfed. Speak with your doctor if you are nursing a child, as you may need to decide between discontinuing nursing and discontinuing the medication.
  • As renal function in the elderly is generally reduced, the body may process drugs slower than usual. This can cause an increased amount of the drug to stay in the body for longer periods of time, leading to more severe side effects.
  • There is currently a lack of evidence to suggest the safety of this drug in children aged one year or younger with respiratory tract, middle ear, skin and skin structure, bone, and urinary tract infections.
  • You should not use Keflex if you are allergic to cephalexin or to similar antibiotics, such as Ceftin, Cefzil, Omnicef, and others. Tell your doctor if you are allergic to any drugs, especially penicillin or other antibiotics.

Frequently Asked Questions (FAQ)

Here are some frequently asked questions about Keflex and their answers:

What is Keflex used for?

Keflex is an antibiotic used to treat several types of bacterial infections, such as ear infections, strep throat, and urinary tract infections.

What is the usual dose of Keflex?

The usual dose of Keflex is 250 mg every 6 hours, or 500 mg every 12 hours, depending on the severity of the infection.

How should Keflex be taken?

Keflex should be taken with a full glass of water. Swallow the capsules whole and do not crush, chew, or break them.

How long Keflex should be taken?

It is recommended to take the full course of the prescribed medication, even if the symptoms of the infection have subsided.

Are there any side effects associated with Keflex?

Common side effects of Keflex include nausea, vomiting, diarrhea, and abdominal pain. Other possible side effects include headache, dizziness, and rash.


It's important to purchase Keflex from verified Canadian pharmacy.

Additional information

Generic name:



Capsule, Tablet


250mg, 500mg

Quantities Available: