alcephin la 500 mg/500 mg tablet - Cefalexin (500mg) + Probenecid (500mg) medicine

Alcephin LA 500 mg/500 mg Tablet: Complete Medicine Guide

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🏭 Alembic Pharmaceuticals Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 26, 2026
⚠️ Hepatotoxicity Risk ⚠️ Nephrotoxicity Risk 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for approved indications.
Reviewed by
SaathiMed Expert Panel | Sep 26, 2026
🩺
Medically Fact-Checked & Clinically Verified by SaathiMed Clinical Review Board
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026

When to Call Your Doctor IMMEDIATELY

  • Blood in stool or vomit
  • Severe abdominal pain
  • Chest pain or difficulty breathing
  • Severe headache with visual changes
  • Sudden swelling of face, lips, or throat
  • Yellowing of skin or eyes
  • Decreased urine output

If experiencing severe symptoms, call emergency services immediately.

What is alcephin la 500 mg/500 mg tablet used for?

This medicine is a combination antibiotic containing cefalexin and probenecid. It is used to treat certain bacterial infections by killing bacteria and prolonging the antibiotic's effect in the body. It should be taken exactly as prescribed by a doctor.

  • Generic Name: Cefalexin + Probenecid
  • Manufacturer: Alembic Pharmaceuticals Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 alcephin la 500 mg/500 mg tablet के बारे में (Hindi Summary)

उपयोग: यह दवा सेफालेक्सिन और प्रोबेनेसिड का संयोजन है, जिसका उपयोग कुछ जीवाणु संक्रमणों के इलाज के लिए किया जाता है। यह शरीर में एंटीबायोटिक के प्रभाव को बढ़ाती है और संक्रमण को फैलने से रोकती है। इसे डॉक्टर के निर्देशानुसार ही लें।

साइड इफेक्ट्स: आम दुष्प्रभावों में मतली, उल्टी, दस्त, पेट दर्द और सिरदर्द शामिल हैं। गंभीर दुष्प्रभावों में एलर्जी, सूजन, सांस लेने में कठिनाई, गुर्दे की समस्या और रक्त विकार हो सकते हैं। कोई भी असामान्य लक्षण दिखने पर तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा को डॉक्टर के बताए अनुसार ही लें। खुराक न छोड़ें और बेहतर महसूस होने पर भी कोर्स पूरा करें। इसे भोजन के साथ लें और पर्याप्त पानी पिएं। शराब से बचें। गुर्दे या लीवर की बीमारी हो तो डॉक्टर को बताएं।

💡 Did You Know? India is the largest provider of generic medicines globally, supplying over 50% of global vaccine demand.

💊 alcephin la 500 mg/500 mg tablet Uses & Benefits

[{"condition":"Skin and soft tissue infections","description":"Used to treat bacterial infections of the skin and underlying tissues caused by susceptible gram-positive bacteria, such as cellulitis and abscesses.","evidence":"Well-established"},{"condition":"Respiratory tract infections","description":"May be used for upper and lower respiratory tract infections caused by susceptible organisms, including pharyngitis and tonsillitis.","evidence":"Well-established"},{"condition":"Urinary tract infections","description":"Effective against certain urinary tract infections caused by susceptible bacteria, especially when prolonged antibiotic levels are needed.","evidence":"Well-established"},{"condition":"Bone and joint infections","description":"Sometimes used for bone and joint infections caused by susceptible bacteria, though other antibiotics may be preferred.","evidence":"Limited"}]

Off-label uses: [{"condition":"Gonorrhea","description":"Historically, probenecid was used with certain antibiotics to treat gonorrhea, but this is not a standard current use due to resistance.","evidence":"Limited"},{"condition":"Gout","description":"Probenecid alone is used to treat gout by increasing uric acid excretion, but this combination is not intended for gout treatment.","evidence":"Not established from the available information."}]

Primary treatment for: Bacterial infections

Also treats: Skin infections, Respiratory tract infections, Urinary tract infections

📋 Drug Information

Generic Name(s)Cefalexin + Probenecid
Brand NameAlcephin LA 250 mg/250 mg Tablet
ManufacturerAlembic Pharmaceuticals Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassANTI INFECTIVES
Action ClassCephalosporin antibiotic + Uricosuric agent
Route of AdministrationOral
StorageStore at room temperature between 15°C and 30°C (59°F to 86°F). Keep away from moisture and direct sunlight.
Shelf Life24 months from the date of manufacture.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Always prescribe this combination only when a prolonged antibiotic effect is needed, such as in deep-seated infections.
2
Advise patients to take the tablet with food to minimize gastrointestinal upset.
3
Warn patients about the risk of kidney stones with probenecid and emphasize adequate hydration.
4
Monitor renal function before and during therapy, especially in elderly or renally impaired patients.
5
Instruct patients to complete the full course even if symptoms improve to prevent resistance.
6
Caution patients about potential interactions with methotrexate, warfarin, and rifampicin.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Skin infection
This medicine is commonly prescribed for this.
Likely Use
❌
Fever
This medicine is not a primary fever reducer.
Not Primary
❌
Cough
This medicine is not for viral coughs.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionCefalexin is well absorbed from the gastrointestinal tract after oral administration. Probenecid is also absorbed orally. Food may delay the absorption of cefalexin slightly but does not significantly reduce the overall amount absorbed.
DistributionCefalexin distributes widely into body tissues and fluids, including the kidneys, lungs, and skin. Probenecid is highly protein-bound and distributes mainly in the extracellular fluid.
Protein BindingCefalexin is approximately 10-15% protein-bound. Probenecid is highly protein-bound (85-95%).
MetabolismCefalexin is not significantly metabolized and is excreted largely unchanged in the urine. Probenecid is metabolized in the liver to inactive metabolites.
Half-LifeThe elimination half-life of cefalexin is approximately 0.5 to 1.2 hours, but it is prolonged when co-administered with probenecid. The half-life of probenecid is about 6 to 12 hours.
ExcretionCefalexin is excreted primarily unchanged in the urine via glomerular filtration and tubular secretion. Probenecid is excreted in the urine as metabolites and unchanged drug.
BioavailabilityCefalexin bioavailability is approximately 90% after oral administration. Probenecid bioavailability is high but not well established from available information.
Onset of ActionAntibacterial effects begin within 1 to 2 hours after oral administration, depending on the susceptibility of the bacteria.
Peak Plasma TimePeak plasma concentrations of cefalexin are reached within 1 hour; probenecid peaks in about 2 to 4 hours.
Duration of ActionThe antibacterial effect of cefalexin is prolonged by probenecid, typically lasting 6 to 12 hours per dose, but this can vary.

How It Works

Cefalexin works by binding to penicillin-binding proteins in the bacterial cell wall, inhibiting the final step of peptidoglycan synthesis, which leads to bacterial cell lysis and death. Probenecid inhibits the renal tubular secretion of cefalexin by competing for the organic anion transporter, thereby increasing cefalexin blood concentrations and prolonging its duration of action.

Mechanism Steps

1
Cefalexin binds to PBPs: Cefalexin binds to penicillin-binding proteins on the bacterial cell membrane, inhibiting cell wall synthesis.
2
Bacterial cell lysis: Inhibition of cell wall synthesis leads to weakening of the bacterial cell wall and ultimately cell death.
3
Probenecid inhibits renal secretion: Probenecid competes with cefalexin for active transport in the renal tubules, reducing its elimination.
4
Increased cefalexin levels: As a result, cefalexin plasma levels remain higher for longer, enhancing its antibacterial activity.

💡 How to Take alcephin la 500 mg/500 mg tablet

Strength: Each tablet contains cefalexin 500 mg and probenecid 500 mg.

1Take the tablet with a full glass of water.
2Swallow the tablet whole; do not crush or chew.
3Take with food to reduce stomach upset.
4Take at evenly spaced intervals as prescribed.
5Complete the full course even if you feel better.

Dosage Information

Adult DosageThe usual adult dose is one tablet taken orally every 12 hours or as directed by your doctor. The exact dose and duration depend on the type and severity of the infection, your kidney function, and other factors. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. Do not self-adjust the dose.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageElderly patients may have reduced kidney function and may require dose adjustment. Consult your doctor for personalized dosing.
Renal ImpairmentDose adjustment is required in patients with renal impairment. Consult your doctor for specific recommendations based on creatinine clearance.
Hepatic ImpairmentNo specific dose adjustment is established for hepatic impairment, but use with caution and monitor liver function.
Maximum Daily DoseThe maximum recommended daily dose is 2 tablets (1000 mg cefalexin and 1000 mg probenecid) per day, but this may vary based on clinical judgment.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

With food
Take with meals
Reduces stomach upset.
Alcohol
Avoid
May increase side effects.
Caffeine
Limit
May increase nervousness.

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Take the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than half the dosing interval has passed
→ Skip the missed dose.
💡 Do not double dose to catch up.

⚠️ Side Effects of alcephin la 500 mg/500 mg tablet

✅ Common Side Effects

Nausea (Common (5-10%))
Take with food to reduce nausea. If it persists, consult your doctor.
Diarrhea (Common (5-10%))
Stay hydrated. If diarrhea is severe or bloody, contact your doctor immediately.
Headache (Common (5-10%))
Rest and stay hydrated. Consult doctor if headache is severe or persistent.
Stomach pain (Common (5-10%))
Take with food. If pain is severe, seek medical advice.
Rash (Uncommon (1-5%))
Stop the medicine and consult your doctor if rash develops.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek emergency medical help immediately if you experience swelling of face, lips, throat, difficulty breathing, or a sudden drop in blood pressure.
Clostridioides difficile-associated diarrhea (Rare (<0.1%))
Contact your doctor if you develop severe, persistent, or bloody diarrhea, even weeks after finishing the antibiotic.
Kidney stones (Rare (<0.1%))
Drink plenty of fluids. Seek medical attention if you experience severe back or side pain, blood in urine, or painful urination.
Blood disorders (e.g., aplastic anemia) (Very rare (<0.01%))
Report unusual tiredness, bruising, or bleeding to your doctor immediately.

⚠️ Rare Side Effects

Liver toxicity
Seek medical attention if you notice yellowing of skin or eyes, dark urine, or severe abdominal pain.
Seizures
Seek emergency medical help if seizures occur.
Interstitial nephritis
Report fever, rash, and decreased urine output to your doctor promptly.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Methotrexate Major
Warfarin Major
Rifampicin Major
Furosemide Moderate
Ibuprofen Moderate
ACE inhibitors Moderate
Antacids Minor
Oral contraceptives Minor

🚨 Major Interactions

  • Methotrexate
  • Warfarin
  • Rifampicin

⚡ Moderate Interactions

  • Loop diuretics (e.g., furosemide)
  • NSAIDs (e.g., ibuprofen)
  • ACE inhibitors

🍷 Alcohol Interaction

Avoid alcohol while taking this medicine. Alcohol may increase the risk of stomach irritation, liver problems, and may worsen side effects such as nausea and dizziness.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Known allergy to cephalosporins or probenecid","Severe renal impairment","History of blood disorders (e.g., aplastic anemia) related to probenecid","Children under 2 years of age","Pregnancy (probenecid should be avoided unless clearly needed)"]

⚠️ Warnings & Precautions

["Use with caution in patients with renal or hepatic impairment.","May cause false-positive results in urine glucose tests.","Avoid in patients with a history of penicillin allergy due to cross-reactivity.","Probenecid may increase the risk of kidney stones; maintain adequate hydration.","Do not use for viral infections.","Complete the full course of therapy as prescribed."]

🤱 Lactation Safety

Cefalexin is excreted in breast milk in small amounts and is generally considered compatible with breastfeeding. Probenecid may also pass into breast milk; consult your doctor before breastfeeding while taking this medicine.

💊 Overdose Management

Overdose may cause nausea, vomiting, diarrhea, and abdominal pain. In severe cases, seizures or kidney damage may occur. Seek immediate medical attention. Treatment is supportive and symptomatic. Hemodialysis may be considered in severe cases.

⏰ Missed Dose

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose to catch up.

Additional Safety Advice

General Safety

Take this medicine exactly as prescribed by your doctor. Do not skip doses or stop early, even if you feel better, as this can lead to antibiotic resistance. Take each dose with a full glass of water and preferably with food to reduce stomach upset. Drink plenty of fluids throughout the day to help prevent kidney stones, especially while taking probenecid. Avoid alcohol while taking this medicine, as it may increase the risk of stomach irritation and liver effects. Inform your doctor if you have kidney disease, liver disease, gout, or a history of blood disorders. Do not share this medicine with others. Keep out of reach of children.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients are more likely to have reduced kidney function and may require dose adjustments. Monitor renal function closely and watch for signs of toxicity.

🤰 Pregnancy Planning (TTC)

If you are planning pregnancy, consult your doctor before taking this medicine. Probenecid should be used with caution during pregnancy.

🏥 Post-Surgery Considerations

This medicine may be prescribed after surgery to prevent or treat infection. Follow your surgeon's instructions carefully and complete the course.

🦷 Dental Procedures

Inform your dentist if you are taking this medicine, as it may interact with other medications used during dental procedures. Antibiotic prophylaxis may be needed for certain dental work.

💚 Lifestyle Tips for Better Results

🏃
Maintain a healthy weight to reduce stress on your body.
🥗
Stay well hydrated to help prevent kidney stones.
😴
Practice good hygiene to prevent infections.
💧
Include a balanced diet rich in fruits and vegetables.
🧘
Get adequate rest to support your immune system.

🏋️ Exercise Considerations

Moderate exercise is generally safe, but if you experience dizziness or fatigue, avoid strenuous activities until you feel better. Consult your doctor before starting any new exercise regimen.

🥗 Diet Recommendations

Drink plenty of water throughout the day.
Include probiotic-rich foods like yogurt to support gut health.
Avoid alcohol and caffeine.
Eat a balanced diet to support recovery.

💼 Impact on Daily Work & Life

This medicine may cause dizziness or fatigue in some people. Avoid driving or operating heavy machinery if you are affected. Most people can continue their normal activities, but listen to your body and rest when needed.

🛑 When to Stop This Medicine

Do not stop taking this medicine early unless your doctor tells you to. Complete the full course even if you feel better. If you experience severe side effects, contact your doctor immediately.

📅 Long-Term Use Effects

Long-term use of this medicine may increase the risk of antibiotic resistance and rare blood or kidney disorders. Regular monitoring of kidney and liver function is advised if prolonged therapy is necessary. Do not use for longer than prescribed without medical supervision.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Cefalexin alone

May be used for less severe infections where prolonged action is not required.

Evidence: Well-established
Other antibiotics

Depending on the infection and susceptibility, other antibiotics may be prescribed.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

Antibiotics may reduce the effectiveness of live bacterial vaccines. Consult your doctor about vaccination timing while on this medicine.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate unless specified

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

Carry this medicine in its original packaging with a copy of your prescription. Store at room temperature and protect from moisture. If traveling across time zones, adjust dosing times gradually under medical guidance. Check customs regulations for carrying prescription medicines.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 45-year-old man with a skin infection
He was prescribed this medicine for a severe skin infection. He took it with food as directed and completed the 7-day course. His infection cleared up, and he experienced only mild nausea that resolved after the first few doses.
💡 Lesson: Taking the medicine with food and completing the full course led to successful treatment with minimal side effects.
👤 A 60-year-old woman with a urinary tract infection
She was given this medicine for a complicated UTI. Her doctor monitored her kidney function and advised her to drink plenty of water. She recovered fully without any kidney problems.
💡 Lesson: Regular monitoring and adequate hydration are important when taking probenecid-containing medicines.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: You may start feeling better within 1-2 days, but it is important to complete the full course as prescribed.

Q: Can I take this medicine with food?

A: Yes, taking it with food helps reduce stomach upset.

Q: What should I do if I miss a dose?

A: Take it as soon as you remember, but if it's almost time for your next dose, skip the missed dose and continue with your regular schedule.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney function?
  • Can I drive after taking this medicine?
  • Does it interact with my blood pressure medicine?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?

🔄 Substitutes for alcephin la 500 mg/500 mg tablet

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: This medicine can cure viral infections like the flu.
    Fact: This medicine is an antibiotic and is only effective against bacterial infections, not viruses.
  • Myth: You can stop taking this medicine once you feel better.
    Fact: You must complete the full course as prescribed to prevent recurrence and resistance.
  • Myth: This medicine is safe to take without a prescription.
    Fact: This is a prescription medicine and should only be taken under a doctor's supervision.

🔄 Alternative Options

Generic Alternatives

  • Cefalexin and Probenecid combination (generic)

📊 Comparison with Similar Medicines

[{"medicine":"This medicine","composition":"Cefalexin 500 mg + Probenecid 500 mg","route":"Oral","primary_use":"Bacterial infections"},{"medicine":"Cefalexin alone","composition":"Cefalexin 500 mg","route":"Oral","primary_use":"Bacterial infections"}]

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