Buy Keflex
keflex
$32.98
- Active ingredient: Cephalexin
- Category: Antibiotics
- Delivery time: Airmail (14-21 days) | EMS trackable (5-9 days)
- Prescription: Included
- Availability: In Stock
Keflex (Cephalexin) 250mg and 500mg capsules are available to order from our Singapore pharmacy with reliable delivery. This cephalosporin antibiotic works by interfering with bacterial cell wall synthesis, causing the bacteria to rupture and die. Its broad-spectrum action effectively treats various bacterial infections including respiratory, skin, and urinary tract infections. It is a reliable treatment for adults with bacterial infections who require effective antibiotic therapy under medical guidance.
Table of contents
- Keflex (Cephalexin) Buyer and Patient Handbook in Singapore
- What is Keflex?
- Who Should Use Keflex?
- How Does It Work?
- Why Choose Keflex?
- Dosage, Administration, Lifestyle and Dietary Recommendations
- Recommended Dosage
- How to Take
- Missed Dose
- Overdose
- Special Populations
- Lifestyle & Diet
- Precautions and Warnings
- Drug Interactions
- Potential Side Effects
- Common Side Effects
- Less Common Side Effects
- Serious Side Effects
- Who Should Avoid This Medication?
- Storage Instructions
- Keflex Alternatives
- Frequently Asked Questions
- How long does it take for Keflex to start working?
- Can I take Keflex with alcohol?
- What should I do if I develop a rash while taking Keflex?
- Is it safe to use Keflex while breastfeeding?
- Can I use Keflex for a cold or flu?
- What if I miss several doses?
- Are there any food restrictions while on Keflex?
- How should I store leftover tablets?
- Glossary
- Disclaimer
- Keflex Drug Class
- Keflex Connected Conditions
- Related Tags / Keywords
- How to order Keflex from our Online Pharmacy
- Reviews
- Write your review
Keflex (Cephalexin) Buyer and Patient Handbook in Singapore
What is Keflex?
Keflex is a cephalosporin-type antibiotic used to treat bacterial infections. It belongs to the broad-spectrum “penicillin-like” class and is commonly prescribed for Skin Infections, Ear Infections, urinary-tract infections, and Throat Infections. The drug is approved by the Singapore Health Sciences Authority (HSA) and is available in oral tablet form (250 mg and 500 mg).
Who Should Use Keflex?
- Adults with uncomplicated bacterial skin or soft-tissue infections.
- Patients diagnosed with streptococcal Pharyngitis or tonsillitis.
- Individuals with mild to moderate urinary-tract infections caused by susceptible bacteria.
- Children (≥1 year) when dosage is adjusted by weight.
How Does It Work?
Keflex contains cephalexin, which binds to bacterial cell-wall proteins called penicillin-binding proteins. This inhibits the construction of a strong cell wall, causing the bacteria to burst and die. Think of it as a construction crew that suddenly loses its building materials; the structure collapses. The medication does not affect human cells, but it should be used only for bacterial infections-not viral illnesses like the common cold.
Why Choose Keflex?
- Proven efficacy: Clinical trials show rapid symptom relief for susceptible infections.
- Convenient dosing: Once- or twice-daily tablets fit typical daily routines.
- Cost-effective: As a generic product, Keflex offers the same therapeutic benefit as brand-name cephalexin at a lower price point.
Note: Any off-label use (e.g., for prophylaxis in surgery) should be discussed with a healthcare professional.
Dosage, Administration, Lifestyle and Dietary Recommendations
Recommended Dosage
- Adults: 250 mg every 6 hours or 500 mg every 12 hours, depending on infection severity.
- Children (≥1 yr): 25-50 mg/kg per day divided every 6 hours; adjust the tablet strength accordingly.
How to Take
- Swallow the tablet whole with a full glass of water.
- Can be taken with or without food; a meal may reduce stomach upset.
- Do not crush or chew unless advised by a pharmacist.
Missed Dose
- Take the missed dose as soon as you remember if it is within 4 hours of the scheduled time.
- Skip it if more than 4 hours have passed and resume the regular schedule. Do not double-dose.
Overdose
- If you suspect an overdose, seek immediate medical assistance (e.g., Singapore’s 995 emergency service).
- Symptoms may include Nausea, Vomiting, Diarrhea, or dizziness.
Special Populations
- Elderly: Kidney function often declines; dosage may need reduction.
- Renal impairment: Adjust dose proportionally to creatinine clearance.
- Pregnancy & lactation: Generally considered safe (Category B) but confirm with your obstetrician.
Lifestyle & Diet
- Grapefruit juice does not significantly affect cephalexin, but large amounts of antacids containing aluminum or magnesium can lower absorption-take antacids at least 2 hours apart.
- Maintain adequate hydration to help kidney clearance.
Precautions and Warnings
- Do not use Keflex if you have a known allergy to cephalosporins or penicillins.
- Monitor for signs of a serious allergic reaction: rash, itching, swelling, or difficulty breathing.
- Prolonged use may lead to Clostridioides difficile colitis; report persistent diarrhea.
- Inform your doctor of any history of Kidney Disease, liver disease, or gastrointestinal disorders.
Drug Interactions
| Drug Class | Interaction Risk | Recommended Action |
|---|---|---|
| Antacids (Al/ Mg) | ↓ absorption | Separate dosing by ≥2 hours |
| Warfarin | ↑ INR | Monitor INR closely; adjust dose if needed |
| Oral contraceptives | ↓ effectiveness | Use backup contraception during therapy |
Potential Side Effects
Common Side Effects
- Nausea
- Diarrhea (often mild)
- Headache
- Rash
Less Common Side Effects
- Vomiting
- Abdominal Pain
- Dizziness
Serious Side Effects
- Severe allergic reaction (Anaphylaxis) - seek emergency care
- Persistent, watery diarrhea (possible C. difficile infection) - consult a doctor immediately
- Liver enzyme elevation - monitor liver function tests if therapy exceeds 2 weeks
Who Should Avoid This Medication?
- Individuals with a documented hypersensitivity to cephalexin, other cephalosporins, or penicillins.
- Patients with severe renal impairment who cannot have dosage adjusted.
- Children under 1 year of age unless specifically prescribed.
Storage Instructions
- Keep tablets in the original container, tightly closed.
- Store at 15 °C-30 °C (room temperature), away from moisture and sunlight.
- Keep out of reach of children and pets.
Keflex Alternatives
| Name | Class | Key Difference |
|---|---|---|
| Augmentin | Amoxicillin-clavulanate | Broader spectrum; higher GI upset risk |
| Amoxil | Amoxicillin | Similar spectrum, may need more frequent dosing |
| Zinnat | Cefuroxime | Second-generation cephalosporin; useful for resistant strains |
Frequently Asked Questions
How long does it take for Keflex to start working?
Keflex usually begins to relieve symptoms within 48 hours, though you should complete the full course to fully eradicate the infection.
Can I take Keflex with alcohol?
Yes, moderate alcohol consumption does not interfere with the antibiotic’s effectiveness, but excessive drinking can worsen side effects like stomach upset.
What should I do if I develop a rash while taking Keflex?
Stop the medication and seek medical advice immediately, as a rash may indicate an allergic reaction.
Is it safe to use Keflex while breastfeeding?
Cephalexin passes into breast milk in small amounts and is generally considered compatible with breastfeeding, but discuss with your pediatrician.
Can I use Keflex for a cold or flu?
No, antibiotics do not treat viral infections such as the common cold or Influenza. Use only for bacterial infections confirmed by a clinician.
What if I miss several doses?
Contact a healthcare professional for guidance; missing multiple doses can reduce treatment efficacy and increase resistance risk.
Are there any food restrictions while on Keflex?
There are no major dietary restrictions, but avoid taking large doses of antacids close to the medication time.
How should I store leftover tablets?
Keep them in a cool, dry place in the original packaging until the expiration date; do not store in the bathroom or refrigerator.
Glossary
- Cephalosporin: A class of β-lactam antibiotics that target bacterial cell-wall synthesis.
- Penicillin-binding proteins (PBPs): Enzymes critical for constructing bacterial cell walls; inhibited by cephalosporins.
- Clostridioides difficile: A bacterium that can cause severe diarrhea after antibiotic disruption of normal gut flora.
Disclaimer
The information provided here is for general educational purposes only and does not replace professional medical advice. Off-label use should only be undertaken after consulting a qualified health professional. Readers are responsible for verifying the suitability of any medication for their personal health circumstances. Our online pharmacy platform offers convenient access to approved medicines, but we do not dispense prescriptions, provide medical diagnoses, or guarantee clinical outcomes. Always discuss treatment decisions with a licensed clinician.
Keflex Drug Class
Keflex Connected Conditions
Related Tags / Keywords
How to order Keflex from our Online Pharmacy
To order Keflex | Cephalexin on our online pharmacy, all you need to do is select the required dosage and quantity of pills above. The cost of the selected pack will appear automatically. Next, add the chosen amount to your cart by clicking the Add to Cart button. You can either continue shopping for more medications or head to the checkout. At the Checkout, finalize your purchase through our secure payment gateway.
Keflex / Cephalexin pills are made using high-quality generic ingredients and are subject to strict quality control in line with WHO and Health Sciences Authority (HSA) standards. However, please note that Keflex pills are dispatched from outside Singapore due to prescriptions issued overseas.
Disclaimer: The content on this website is provided solely for informational purposes and is not intended to replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with any questions or concerns regarding your health, and never disregard or delay seeking professional advice based on the information presented here. Use of this website does not create a doctor-patient relationship, and in the event of a medical emergency, please contact your local emergency services immediately. Our website assumes no responsibility or liability for any errors or omissions in the content provided.
Reviews
Got prescribed 500mg for a deep tissue infection after a motor accident. It wiped out the infection fast, I'll give it that. But the nausea hits me like a truck about 45 minutes after taking it. Seriously, if you're sensitive, DO NOT take this on an empty stomach. Always chase it with a meal, even if it's just a banana and some milk. Otherwise, you'll be hugging the bowl for an hour. Good result, rough road getting there.
This is my go-to for sinus infections that dip into my chest. Every 3-4 months, same routine. The good news: it works. The bad news: yeast infections, guaranteed. Every. Single. Time. My unofficial hack? Start probiotics (the high CFU kind) two days before the Keflex even touches your lips, and keep going for two weeks after you finish. It helps manage the fallout, but it doesn't eliminate it entirely. Cephalexin is a nuclear bomb for bacteria.
Took the 250mg dose for a mild skin abscess. After day two, I felt fantastic, energy was great, the redness was gone. Day four, however, and the brain fog started. Just complete inability to concentrate, like being underwater. I had to stop driving for a day. It feels effective, but the cognitive side effects are way underestimated. Definitely something to monitor, especially for students.
Started on 500mg pills for recurring cellulitis in my leg. The drug knocked down the swelling within 48 hours, which was critical. First four doses gave me insane diarrhea, though. Pharmacist said to split the dose and take with a yogurt cup-specifically, the plain low-sugar kind. That helped settle my stomach significantly. It's potent medicine, but treat your gut right while you're taking it.
I’ve been on and off this for years, usually shorter courses, 7-10 days maximum. It’s effective for Staph infections on the surface level. My problem is the insomnia it triggers. I try to take the last dose of the night at least three hours before bed because if I take it closer, I will stare at the ceiling until 4 AM. It works, sure, but kiss deep sleep goodbye while you're pulsing it.
First time trying Keflex for a dental procedure infection. They kept emphasizing the side effects, but man, I wasn't prepared for the metallic taste. Everything tastes like I'm chewing on old copper coins. It makes drinking water and even brushing my teeth gross. I had to switch to heavily spiced foods and fruit juice just to tolerate eating for the duration. It fixed the abscess, zero doubt, but the taste ruins everything.
My system hates most antibiotics, but Cephalexin is actually one of the gentler ones on my liver markers. I use the 500mg dose for severe sore throat/unidentified upper respiratory infections when the doctor suspects bacterial involvement. Pro tip: if you usually drink coffee, drastically cut back. The combo of caffeine and this antibiotic made my anxiety spike hard on days 3 and 4. Less coffee equals fewer jitters.
My child took this in liquid suspension form before, and it worked fine. Now I, the adult, took the 500mg pill for a lingering ear infection. The ear infection cleared right up, incredible relief there. HOWEVER, the dizziness it caused was intense. I felt completely off-balance for a full week. I had to switch to lower-impact workouts and couldn't even look at my phone for too long. Effective delivery, atrocious vertigo.