Keflex
In stock
250mg · 500mg
from A$46.93
In brief
Keflex contains cefalexin, an antibiotic used to treat bacterial infections of the respiratory tract, sinuses, ears, skin and soft tissue, kidneys and bladder.
Keflex in Australia: what it is used for
Keflex contains the antibiotic cefalexin. According to the Keflex consumer medicine information, it is used for bacterial infections of the respiratory tract (throat, tonsils, chest and lungs), the nose (sinusitis), the ears (otitis media), skin and soft tissue, and the kidneys and bladder.
This listing shows cefalexin 250 mg and 500 mg. It does not name the manufacturer of the capsules supplied, so check the label on the pack you receive and confirm with your prescriber or pharmacist that it matches your prescription.
Keflex vs Ibilex and other cefalexin brands
Cefalexin is the active ingredient; Keflex and Ibilex are brand names. The Australian sponsor of Keflex is Aspen Pharmacare Australia. Keflex is entered on the Australian Register of Therapeutic Goods as 250 mg and 500 mg capsules in blister packs. Keflex also comes as an oral suspension (125 mg/5 mL and 250 mg/5 mL); this page lists capsule strengths only.
Who should not take Keflex
Do not use Keflex if you have ever had an allergic reaction to cefalexin, penicillin, any other cephalosporin, or any ingredient in the capsules.
Kidney or liver disease calls for caution. If you are pregnant or breastfeeding, discuss Keflex with your doctor.
How Keflex is taken
Keflex can be taken with or without food. Take the dose your doctor has prescribed and finish the whole course.
Keflex side effects
Common side effects include oral or vaginal thrush, diarrhoea, nausea, vomiting, dizziness, tiredness, stomach pain and headache.
Get urgent medical help for signs of a severe allergic reaction, severe bloody diarrhoea with fever, seizures, jaundice or confusion. The consumer information also warns of a risk of severe colitis with prolonged diarrhoea.
Keflex interactions
The Keflex consumer information names probenecid and metformin. If you take metformin, check with your doctor or pharmacist.
Storage
The Keflex consumer information advises storing 250 mg capsules below 25 °C and 500 mg capsules below 30 °C. Follow the storage directions on the pack you receive.
Keflex price: compare pack sizes
Compare packs of the same strength. These examples are for 500 mg and are calculated from the listed prices at the shop’s Australian-dollar rate on 7 October 2026, before delivery or other checkout charges.
| Strength | Pack size | Pack price | Price per capsule |
|---|---|---|---|
| 500 mg | 30 | A$74.48 | A$2.48 |
| 500 mg | 90 | A$200.55 | A$2.23 |
| 500 mg | 360 | A$701.96 | A$1.95 |
At 500 mg, the 90 pack costs about 10.2% less per capsule than the 30 pack, and the 360 pack about 21.5% less.
Choose only the quantity and strength appropriate to your prescription, and check the expiry date. Prices can change, so confirm the current pack price before ordering.
Frequently asked questions
Is Keflex the same as cefalexin?
Keflex is a brand name. Its active ingredient is cefalexin.
Is Ibilex the same as Keflex?
Both brands contain cefalexin.
Can I take Keflex if I am allergic to penicillin?
The consumer information says not to use Keflex if you have ever had an allergic reaction to penicillin.
Can I take Keflex with food?
Yes. It can be taken with or without food.
Delivery across Australia
Airmail service: delivery in 14–22 days, free on orders over A$286.52. Trackable service: delivery in 7–14 days, with the tracking number sent by email. These are estimated delivery times, not guaranteed arrival dates.
Australian cities and delivery information
The Australian delivery options above apply to the destinations below. A city listing does not indicate a physical pharmacy branch or local stock.
| City | State or territory |
|---|---|
| Sydney | New South Wales |
| Melbourne | Victoria |
| Brisbane | Queensland |
| Perth | Western Australia |
| Adelaide | South Australia |
| Hobart | Tasmania |
| Gold Coast | Queensland |
| Canberra | Australian Capital Territory |
| Cairns | Queensland |
| Central Coast | New South Wales |
| Townsville | Queensland |
| Darwin | Northern Territory |
| Newcastle | New South Wales |
| Geelong | Victoria |
| Gladstone | Queensland |
| Port Macquarie | New South Wales |
| Bathurst | New South Wales |
| Forbes | New South Wales |
| Geraldton | Western Australia |
| Goulburn | New South Wales |
