Keftab (Cephalexin) – Patient Information (Australia)

Keftab is a brand of cephalexin, an antibiotic belonging to the cephalosporin group. It is commonly used to treat certain bacterial infections in adults and children. This guide is designed to help you understand what Keftab does, how it is used, and important safety considerations.

Please note: Antibiotics treat bacterial infections, not viral illnesses such as colds or flu. Taking antibiotics correctly helps them work better and reduces the risk of antibiotic resistance.

Quick Product Overview

• Medicine name: Keftab (cephalexin)
• Drug class: Cephalosporin antibiotic (beta-lactam)
• Common forms: Oral capsules/tablets (strengths vary by product listing)
• How it works: Stops bacteria from building a protective cell wall
• Typical use: Skin, soft tissue, and some urinary tract and respiratory infections (depending on local guidance and sensitivity)
• Availability in Australia: Antibiotic medicines are generally supplied through pharmacies and must be used according to Australian medicines practice

How Keftab Works (Mechanism of Action)

Cephalexin works by targeting the way bacteria build and maintain their cell wall. Bacterial cell walls are essential for survival; without them, bacteria weaken and eventually die.

• Cephalexin binds to penicillin-binding proteins (PBPs) located on bacterial cell walls.
• This interferes with the cross-linking of the cell wall structure.
• As a result, bacterial cell walls become unstable and bacteria can no longer grow or reproduce effectively.

Important: Cephalexin is effective only against bacteria that are susceptible to it. Your healthcare professional may consider local resistance patterns and the likely bacteria causing your infection.

Pharmacokinetics (How Your Body Handles Cephalexin)

Pharmacokinetics describes how a medicine is absorbed, distributed, metabolised, and eliminated. Understanding these basics can help you take Keftab reliably.

• Absorption: Cephalexin is generally absorbed after oral dosing. It can be taken with or without food, though food may improve tolerance for some people.
• Distribution: It can reach many tissues and fluids, including skin and urinary tract tissues, depending on infection site.
• Metabolism: Cephalexin is not extensively metabolised by the liver.
• Elimination: It is primarily cleared through the kidneys. This is why kidney function matters for appropriate dosing.
• Half-life: The drug’s elimination half-life is typically a few hours, which is one reason multiple daily doses are needed.

Kidney health: If you have reduced kidney function, dosing intervals or amounts may need adjustment. Always follow the specific instructions provided with your medicine.

What Keftab Is Used For (Typical Use and Indications)

Cephalexin is used to treat bacterial infections. The exact choice of antibiotic depends on the likely bacteria, infection location, severity, allergy history, and local antimicrobial guidance.

Common indications may include:

• Skin and soft tissue infections (for example, uncomplicated cellulitis, infected wounds, impetigo depending on clinical assessment)
• Urinary tract infections (UTIs) when cephalexin is appropriate and the bacteria are susceptible
• Respiratory tract infections in selected cases where cephalexin is suitable (not all coughs/scolds are bacterial)
• Bone infections (osteomyelitis) in certain situations, typically under specialist guidance

Susceptibility matters: Even if an infection looks similar, different bacteria may be involved. If your symptoms don’t improve, you may need review and possible testing (e.g., culture and sensitivity) or an alternative antibiotic.

When to Take Keftab (Timing and Duration)

Most cephalexin regimens are prescribed to be taken multiple times per day (commonly every 6–12 hours depending on the strength and the infection being treated). The key is to keep drug levels steady to help your immune system and the antibiotic work together.

General timing tips:

• Try to space doses evenly across the day.
• Keep a consistent schedule (e.g., morning/afternoon/evening, or as directed).
• Complete the full course unless advised otherwise by a clinician.
• If you feel better early, do not stop just because symptoms improve—some bacteria may still remain.

Starting treatment: Begin as soon as you can after it is dispensed, especially if your infection is painful, worsening, or you’ve been advised to start promptly.

If you miss a dose:

• Take it when you remember if it is close to the next scheduled dose.
• If it is almost time for the next dose, skip the missed dose.
• Do not double up unless advised by your healthcare professional.

Food Interactions and Dietary Considerations

Cephalexin is generally not strongly affected by food. However, individual tolerance can vary.

• With or without food: You can usually take Keftab with food to reduce the chance of nausea or stomach upset.
• Maintain hydration: Drinking water can support comfort and kidney function, particularly for those being treated for urinary infections.
• Probiotics: Some people choose probiotics to help reduce antibiotic-associated diarrhoea. If you consider this, separate probiotic and antibiotic dosing by a few hours where possible, and stop if you become unwell.

Practical tip: If you’ve previously had stomach upset with antibiotics, taking Keftab with a meal or snack may help.

Alcohol and Medicine Interactions

Alcohol

Most guidance indicates that moderate alcohol is not specifically contraindicated with cephalexin. However, alcohol can worsen side effects such as dizziness, dehydration, nausea, and can slow recovery by affecting sleep and immune function.

• Best option: Avoid or limit alcohol while you are unwell.
• If you choose to drink, keep it light and monitor how you feel.

Medicine interactions

Cephalexin has a number of potential interactions, though many people take it without major issues. It’s still important to check all medicines you use—especially if you take them long-term.

• Warfarin (and other anticoagulants): Some antibiotics can affect bleeding risk in people taking warfarin. If you use warfarin, you may need closer monitoring of INR.
• Probenecid: Can affect kidney handling of some antibiotics; your clinician may adjust therapy.
• Other medicines affecting kidney function: If you take medicines that stress the kidneys, ensure your clinician is aware.
• Oral contraceptives: The evidence is mixed. Severe diarrhoea/vomiting can reduce absorption of oral contraceptives, so use additional contraception if that occurs.
• Allergy cross-reactions: If you have allergies to other beta-lactam antibiotics (including penicillins), discuss this before starting.

Always tell your pharmacist or clinician about: all prescription medicines, over-the-counter products, herbal supplements, and recent antibiotics.

Dosing (Adults and Children)

Dose and frequency depend on the infection type, severity, kidney function, and age/weight. Strengths and regimens vary between products.

Important: Use the exact instructions on your medicine label or those provided by your healthcare professional.

General dosing principles

• Infection severity: More severe infections may require different dosing or a different antibiotic.
• Kidney function: Reduced renal function may require a lower dose or longer intervals.
• Child dosing: Usually calculated by weight; do not estimate from adult dosing.
• Course length: Often 5–14 days depending on infection site and clinical response; follow the prescribed plan.

Typical schedules (examples, not a substitute for your label)

Many cephalexin regimens are taken 2–4 times daily (e.g., every 6, 8, or 12 hours). Your exact frequency should come from your dispensing information.

If you’re unsure: Check the label or speak with your pharmacist. Incorrect dosing is a common reason antibiotics don’t work as expected.

Safety Profile: Side Effects and When to Seek Help

Like all medicines, Keftab may cause side effects. Most are mild and temporary, but some require urgent attention.

Common or mild side effects

• Nausea or stomach discomfort
• Diarrhoea (mild)
• Headache
• Vaginal irritation or thrush (in some people)
• Rash (can occur even without allergy)

Seek urgent medical help if you experience

• Signs of severe allergic reaction:
  • swelling of the face, lips, tongue, or throat
  • difficulty breathing or wheezing
  • severe widespread rash or hives
• Severe or persistent diarrhoea, especially if:
  • it is watery or bloody
  • you develop fever or severe abdominal pain
• Severe skin reactions (rare): blistering, peeling, or sores in the mouth/eyes/genitals
• Yellowing of the skin/eyes or dark urine (possible liver issues—seek review)

Less common but important considerations

• Allergy and cross-reactivity: People with a history of severe penicillin allergy should inform their clinician before starting cephalexin.
• Kidney-related effects: If you have kidney disease, dosing should be adjusted to reduce risk.
• Blood tests: Rarely, antibiotics can alter blood counts. Seek medical advice if you feel unusually unwell, have easy bruising, or frequent infections.

Practical Use Tips for Better Results

• Finish the course: Stopping early can allow infection to return or worsen.
• Don’t share antibiotics: Even if someone else has similar symptoms, the cause may differ.
• Manage nausea: Taking with food may help. Staying hydrated is also useful.
• Track symptoms: If there’s no improvement after 48–72 hours, contact your clinician or pharmacist for review.
• Keep a simple symptom note: fever, pain, redness size, urinary symptoms—this can help assess response.
• Storage: Follow label instructions regarding temperature and protection from moisture/heat.

When antibiotics are not working as expected: Some infections require drainage, different antibiotics, or further assessment (e.g., abscess, kidney involvement, or unusual bacteria). Don’t assume all infections will improve quickly.

Alternative Treatment Options

“Alternative” depends on the infection and what bacteria are likely involved. Your clinician may choose:

• Different antibiotics (based on local resistance patterns and sensitivities)
• Topical treatments for certain skin conditions where appropriate (instead of oral antibiotics)
• Supportive care such as pain relief, wound care, hydration, and monitoring
• Culture testing if infection does not respond to initial therapy

Examples of alternative antibiotic classes (chosen by clinicians depending on the case): penicillins, other cephalosporins, macrolides, or other agents for specific circumstances. The right option depends on allergy history, kidney function, and the suspected organism.

Allergy note: If you have had an allergic reaction to cephalosporins or penicillins, alternatives may be needed. Always discuss allergy history with your healthcare professional.

Market and Legal Context in Australia

In Australia, antibiotic medicines are regulated under the Australian regulatory framework (including the Therapeutic Goods Administration, TGA). Medicines are supplied and used according to Australian medicine safety standards, including labelling requirements and appropriate clinical use.

Antibiotic stewardship: Australian health authorities strongly emphasise appropriate use of antibiotics to slow the development of resistance. This means antibiotics should be used when there is likely bacterial infection and when benefits outweigh risks.

For patients: If your symptoms suggest bacterial infection, seek timely advice so treatment can be targeted effectively. Using antibiotics incorrectly (for example, taking them for viral illnesses) contributes to resistance and can expose you to unnecessary side effects.

Recent Guidance and Stewardship Principles (Australia)

While exact recommendations vary by infection type and local protocols, common stewardship principles include:

• Right diagnosis: Antibiotics are most effective when bacterial infection is likely.
• Right choice: Select an antibiotic guided by local resistance patterns and patient factors (e.g., allergies, kidney function).
• Right duration: Use the shortest effective course—avoid unnecessary prolonged treatment.
• Review if not improving: Reassess if symptoms don’t improve after a short period (often 48–72 hours), especially for more severe infections.

If you’re unsure whether your illness needs antibiotics, a clinician or pharmacist can help you decide what to do next.

Delivery and Availability (Online Pharmacy in Australia)

Online pharmacies in Australia typically supply medicines to eligible customers and follow local dispensing and safety requirements. Availability can vary by brand, strength, and form.

• Packaging: Medicines are generally dispatched in manufacturer or pharmacy packaging with patient information included.
• Delivery times: Delivery speed depends on your location and pharmacy policies.
• Stock availability: If a particular strength or pack size is unavailable, alternatives may be offered where permitted.

Tip: Check the product page for current stock and delivery estimates before placing an order.

FAQ – Keftab (Cephalexin)

1. Is Keftab used for UTIs?

Cephalexin may be used for certain urinary tract infections when it is appropriate for the likely bacteria and patient factors. Your clinician may consider urine test results if available, local resistance patterns, and your allergy history.

2. How quickly should I feel better?

Many people notice some improvement within 48–72 hours. If you don’t improve, worsen, or develop new symptoms, seek medical advice promptly.

3. Can I take Keftab with food?

Yes. Keftab can usually be taken with or without food. Taking it with food may help reduce nausea or stomach upset.

4. What if I miss a dose?

Take it as soon as you remember unless it is close to the next dose. Don’t double up. If you miss multiple doses, contact your pharmacist or clinician for guidance.

5. Is it safe to drink alcohol while taking cephalexin?

Alcohol is not usually specifically contraindicated, but it may worsen side effects and slow recovery. For best results, limit alcohol or avoid it while you’re unwell.

6. Can I stop Keftab early if I feel better?

Generally, you should complete the prescribed course unless a clinician advises otherwise. Stopping early can allow infection to return.

7. What are the signs of an allergic reaction?

Seek urgent help if you develop swelling of the face/lips/tongue, difficulty breathing, severe hives, or a widespread rash. Inform your clinician if you’ve ever had a serious allergy to penicillins or cephalosporins.

8. Can Keftab cause diarrhoea?

Yes, diarrhoea can occur. Mild diarrhoea may settle. However, seek medical advice urgently if diarrhoea is severe, persistent, or includes blood, or if you have fever and significant stomach pain.

9. Are there interactions with warfarin?

Cephalexin may interact with anticoagulants such as warfarin. If you take warfarin, you may need extra monitoring of clotting tests (INR). Always consult your clinician or pharmacist.

10. What should I do if my infection keeps coming back?

Recurrent infections can have underlying causes (e.g., incomplete eradication, persistent source, resistant bacteria, skin conditions, urinary issues). You should seek medical review for assessment and possible testing.

11. Is cephalexin the same as other antibiotics?

Cephalexin is a specific antibiotic (a cephalosporin). It is different from other antibiotics such as amoxicillin, clindamycin, or azithromycin. The choice depends on the infection and the bacteria suspected.

12. Can children take Keftab?

Cephalexin is used in children in weight-based dosing determined by the prescriber. Use only the dose written on the dispensing label and confirm the dosing schedule with a pharmacist.

When to Contact a Healthcare Professional

Contact a pharmacist or clinician if you:

• have a history of severe penicillin or cephalosporin allergy
• develop a rash, swelling, or breathing difficulty
• experience severe diarrhoea, blood in stool, or severe abdominal pain
• do not improve within 48–72 hours
• have worsening symptoms, high fever, or signs that the infection is spreading

Remember: This information is general and may not cover every individual situation. Always follow the advice provided with your medicine and seek professional guidance if you have questions.