When it comes to treating bacterial infections, Cephalexin is a commonly prescribed antibiotic in Australia. Whether you’ve been given a script for it or you’re just trying to understand more about how it works, this guide will walk you through everything you need to know—from its uses to precautions and potential side effects.
- What is cephalexin antibiotic used for?
- What can cefalexin be used for?
- Is cefalexin a strong antibiotic?
- Is cephalexin 500mg used for UTI?
- What is cephalexin best for?
- How long does cephalexin take to clear infection?
What is Cephalexin and What Is It Used For?
Cephalexin is an antibiotic that belongs to the cephalosporin class. It is primarily used to treat bacterial infections including:
- Respiratory tract infections such as pneumonia
- Skin infections
- Ear infections
- Bone infections
- Urinary tract infections (UTIs)
- Genital infections
Unlike medications that can tackle viral infections like the flu or the common cold, cephalexin only works against bacteria. Misusing antibiotics for viral conditions can increase the risk of antibiotic resistance, which is a growing public health issue in Australia and globally.
How Is Cephalexin Taken?
Cephalexin is available in capsules, tablets, and liquid suspension. It’s usually taken every 6 or 12 hours for a period ranging from 7 to 14 days, depending on the condition being treated.
- You can take it with or without food
- If using the liquid form, shake it well before each dose
- Try to take it at the same time(s) each day for best results
- Even if you start to feel better, complete the full course as prescribed
Skipping doses or stopping early can cause the infection to return—and potentially become harder to treat.
Important Precautions Before Using Cephalexin
Before starting cephalexin, make sure to speak with your doctor about the following:
- Any allergies, especially to penicillins or other cephalosporins
- Existing conditions like kidney problems, gastrointestinal disorders (such as colitis), or liver disease
- Whether you’re pregnant, planning to become pregnant, or breastfeeding
- Any medications, supplements, or herbal products you’re taking
It’s also important to know that Cephalexin may reduce the effectiveness of hormonal contraceptives, so using an additional form of birth control is recommended during treatment.
What Are the Side Effects of Cephalexin?
Most people tolerate cephalexin well, but like all medications, it can cause side effects. Common issues include:
- Nausea and vomiting
- Diarrhoea
- Stomach pain
- Headaches
- Fatigue or dizziness
In rare cases, more serious reactions may occur, such as:
- Severe allergic reactions (swelling, hives, trouble breathing)
- Bloody diarrhoea or stomach cramps
- Hallucinations
- Signs of a secondary infection (e.g., sore throat, fever)
Seek medical help immediately if you notice any unusual or severe symptoms.
Missed a Dose?
If you forget a dose, take it as soon as you remember. If it’s almost time for the next dose, skip the missed one—don’t double up to make up for it.
Storage and Disposal
- Tablets and capsules should be stored at room temperature, away from heat and moisture
- Liquid cephalexin must be kept in the fridge and discarded after 14 days
- Do not flush unused medicine down the toilet. Look for a local medication take-back program or ask your pharmacist for safe disposal options
Always keep this and other medications out of reach of children.
Is Cephalexin Available Over the Counter in Australia?
No, Cephalexin requires a prescription in Australia. You’ll need to consult with a healthcare provider to get the right dosage and duration based on your condition.