a-bec tablet - Abacavir (300mg) medicine

A-bec Tablet (abacavir 300mg): Complete Medicine Guide

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🏭 Emcure Pharmaceuticals Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Nov 11, 2026
⚠️ Hepatotoxicity Risk 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established
Dr. Ravishankar Kumar
Medically Reviewed by Dr. Ravishankar Kumar ✓ Verified Doctor
B.A.M.S. (RMLAU Ayodhya) • Ex-Balrampur Hospital, Lucknow
Dr. Ravishankar Kumar
Clinically Verified by Dr. Ravishankar Kumar (B.A.M.S., RMLAU) — View Medical Verification Profile ↗
Clinical Background: Balrampur Hospital, Lucknow (Emergency Medicine) & SCPM Hospital | Standards: CDSCO, Indian Pharmacopoeia (IP) & WHO

When to Call Your Doctor IMMEDIATELY

  • Fever, rash, or both after starting this medicine
  • Nausea, vomiting, diarrhea, or abdominal pain with fever
  • Sore throat, cough, or shortness of breath
  • Yellowing of the skin or eyes, or dark urine
  • Rapid breathing, extreme tiredness, or muscle pain
  • Chest pain or pain radiating to the arm or jaw
  • Severe upper abdominal pain radiating to the back
  • Swelling of the face, lips, or throat

If experiencing severe symptoms, call emergency services immediately.

What is a-bec tablet used for?

This medicine contains abacavir 300 mg, an antiretroviral medicine used in combination with other drugs to treat HIV-1 infection. It works by blocking the virus from copying its genetic material. It must only be used after testing negative for HLA-B*5701 and under a doctor's supervision.

  • Generic Name: Abacavir (300mg)
  • Manufacturer: Emcure Pharmaceuticals Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 a-bec tablet के बारे में (Hindi Summary)

उपयोग: यह दवा एबाकावीर 300 मिलीग्राम युक्त एक एंटीरेट्रोवायरल टैबलेट है, जिसका उपयोग एचआईवी-1 संक्रमण के इलाज के लिए अन्य एंटीरेट्रोवायरल दवाओं के संयोजन में किया जाता है। यह वायरस के प्रजनन को रोककर शरीर में वायरस की मात्रा को कम करती है और प्रतिरक्षा प्रणाली को मजबूत बनाने में मदद करती है। यह दवा एचआईवी का इलाज नहीं है और इसे अकेले नहीं लिया जाना चाहिए। इसे शुरू करने से पहले एचएलए-बी*5701 परीक्षण आवश्यक है। यह दवा डॉक्टर के पर्चे के बिना नहीं ली जानी चाहिए।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में मतली, उल्टी, दस्त, सिरदर्द, थकान, बुखार, दाने और भूख में कमी शामिल हैं। गंभीर दुष्प्रभावों में अति संवेदनशीलता प्रतिक्रिया, लैक्टिक एसिडोसिस, गंभीर यकृत विषाक्तता और प्रतिरक्षा पुनर्गठन सिंड्रोम शामिल हैं। यदि आपको बुखार, दाने, मतली, उल्टी, दस्त, पेट दर्द, गले में खराश, खांसी या सांस लेने में कठिनाई हो, तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: यह दवा केवल एचआईवी उपचार में विशेषज्ञ डॉक्टर की देखरेख में ही लेनी चाहिए। दवा शुरू करने से पहले एचएलए-बी*5701 परीक्षण करवाना अनिवार्य है। यदि परीक्षण सकारात्मक है, तो यह दवा नहीं लेनी चाहिए। दवा लेते समय शराब से बचें। नियमित रूप से लीवर और किडनी की जांच करवाएं। दवा को कमरे के तापमान पर सूखी जगह पर रखें। बिना डॉक्टर की सलाह के दवा बंद न करें।

💡 Did You Know? Over 80% of the antiretroviral drugs used globally to combat AIDS are supplied by Indian pharmaceutical companies.

a-bec tablet Uses & Benefits

HIV-1 infection Well-established

Used as part of combination antiretroviral therapy to suppress HIV-1 viral load and improve immune function in adults and children.

Off-Label & Investigational Uses:

[]

Primary Treatment for: Human Immunodeficiency Virus type 1 (HIV-1) infection
Also Treats:
Acquired Immunodeficiency Syndrome (AIDS) HIV-associated dementia Opportunistic infections in HIV patients

📋 Drug Information

Generic Name(s)Abacavir (300mg)
Brand Namea-bec tablet
ManufacturerEmcure Pharmaceuticals Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassANTI INFECTIVES
Action ClassNucleoside/nucleotide reverse transcriptase inhibitors (NRTIs)
Route of AdministrationOral
StorageStore this medicine at room temperature between 20°C and 25°C (68°F to 77°F). Keep it in the original container, tightly closed, away from moisture and heat. Do not refrigerate unless specified. Keep out of reach of children.
Shelf LifeThe shelf life of this medicine is typically 24 months from the date of manufacture. Check the expiry date on the pack before use. Do not use after the expiry date.
WHO GuidelineThe World Health Organization recommends abacavir as an alternative first-line antiretroviral medicine for adults and children living with HIV, in combination with other antiretrovirals. It is also recommended for use in pregnant women and in patients with kidney impairment.
ICMR GuidelineThe Indian Council of Medical Research guidelines include abacavir as an alternative nucleoside reverse transcriptase inhibitor for the treatment of HIV-1 infection in combination with other antiretroviral medicines. It is recommended after HLA-B*5701 testing.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Always test for HLA-B*5701 before starting this medicine, as carriers are at high risk of a life-threatening hypersensitivity reaction.
2
Instruct patients to stop this medicine immediately and seek medical help if they develop fever, rash, or any systemic symptoms.
3
Monitor liver function tests regularly, especially in patients with hepatitis B or C co-infection.
4
Assess cardiovascular risk factors before starting and during treatment due to a possible increased risk of heart attack.
5
Advise patients that this medicine must be used in combination with other antiretrovirals and never as monotherapy.
6
Educate patients about the symptoms of lactic acidosis and immune reconstitution syndrome.
7
Review all concomitant medications for potential interactions, especially methadone and ribavirin.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
HIV infection
This medicine is used as part of combination therapy for HIV-1.
Likely Use
❌
Fever
This medicine is not a primary fever reducer.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionAbacavir is rapidly and extensively absorbed after oral administration. The absolute bioavailability in adults is approximately 83%. Food does not significantly affect the extent of absorption, but it may slightly delay the time to peak concentration.
DistributionAbacavir distributes widely into body tissues and fluids. It crosses the blood-brain barrier and is found in cerebrospinal fluid. It also crosses the placenta and is excreted in human breast milk.
Protein BindingAbacavir is approximately 50% bound to plasma proteins, primarily to albumin.
MetabolismAbacavir is primarily metabolized in the liver by alcohol dehydrogenase and glucuronyl transferase to inactive metabolites. It does not significantly inhibit or induce the cytochrome P450 enzyme system.
Half-LifeThe mean elimination half-life of abacavir is approximately 1.5 to 2 hours in adults.
ExcretionAbout 83% of an oral dose is excreted in the urine, mostly as inactive metabolites. Approximately 16% is excreted in the feces. Only about 1.2% of the dose is excreted unchanged in the urine.
BioavailabilityThe absolute bioavailability of abacavir in adults is approximately 83%.
Onset of ActionThe antiviral effect begins after the drug is converted to its active metabolite inside cells. A measurable reduction in viral load is usually seen within weeks of starting combination therapy.
Peak Plasma TimePeak plasma concentrations of abacavir are reached approximately 1.5 hours after oral administration.
Duration of ActionThe intracellular active metabolite carbovir triphosphate has a longer half-life than the parent drug, allowing twice-daily or once-daily dosing. The duration of antiviral effect is maintained with regular dosing.

How It Works

Abacavir is an intracellularly activated nucleoside reverse transcriptase inhibitor. Inside the body, it is converted into its active metabolite, carbovir triphosphate. This active metabolite competes with the natural building block deoxyguanosine triphosphate and gets incorporated into the viral DNA chain. Because it lacks the necessary chemical group for further chain elongation, it stops the reverse transcriptase enzyme from building the viral DNA. This prevents the virus from multiplying. Abacavir has a high genetic barrier to resistance when used with other active antiretrovirals.

Mechanism Steps

1
Cellular uptake: Abacavir enters cells and is converted by cellular enzymes into its active form, carbovir triphosphate.
2
Competitive inhibition: Carbovir triphosphate competes with the natural nucleotide deoxyguanosine triphosphate for binding to HIV-1 reverse transcriptase.
3
DNA chain termination: Once incorporated into the growing viral DNA chain, carbovir triphosphate lacks the 3'-hydroxyl group needed for further chain elongation, so viral DNA synthesis stops.
4
Viral suppression: The inability to complete viral DNA synthesis prevents HIV-1 from replicating and reduces the viral load in the body.

💡 How to Take a-bec tablet

Strength: This medicine is available as an immediate-release tablet containing 300 mg of abacavir.

1Take this medicine exactly as prescribed by your doctor.
2Swallow the tablet whole with a glass of water.
3You may take it with or without food.
4Take it at the same time each day to maintain steady levels in your body.
5Do not crush, chew, or break the tablet unless your doctor advises.
6If you have trouble swallowing, ask your doctor about other formulations.
7Do not stop taking this medicine without consulting your doctor.

Dosage Information

Adult DosageThe usual adult dose of this medicine is 300 mg taken orally twice daily or 600 mg once daily, in combination with other antiretroviral medicines. The dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. Do not change the dose without medical advice.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician. For children weighing at least 14 kg, the dose is usually calculated based on body weight and must be prescribed by a pediatric HIV specialist.
Elderly DosageThere is limited information on the use of this medicine in patients above 65 years of age. The dose should be selected with caution because elderly patients may have reduced liver, kidney, or heart function. Regular monitoring is advised.
Renal ImpairmentNo dose adjustment is required for patients with mild kidney impairment. For patients with severe kidney impairment or those on dialysis, the dose should be used with caution and may need adjustment. Consult a doctor for individualized dosing.
Hepatic ImpairmentThis medicine should not be used in patients with moderate to severe liver impairment. For patients with mild liver impairment, the dose may be used with caution and regular monitoring of liver function. Consult a doctor for individualized dosing.
Maximum Daily DoseThe maximum recommended daily dose of this medicine is 600 mg, taken as either 300 mg twice daily or 600 mg once daily. Do not exceed this dose unless directed by a specialist.

Dosage Timeline

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

🍽️ Food Timing Guide

With food
May take with or without food
Food does not significantly affect absorption.
Alcohol
Avoid or limit
May increase drug levels and liver side effects.

⏰ 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 a-bec tablet

✅ Common Side Effects

Nausea (Common (5-10%))
Take with food if it upsets your stomach. If nausea persists or is severe, contact your doctor.
Headache (Common (5-10%))
Rest and stay hydrated. Consult your doctor if headaches are severe or persistent.
Fatigue (Common (5-10%))
Get adequate rest. If fatigue interferes with daily activities, speak to your doctor.
Diarrhea (Common (5-10%))
Drink plenty of fluids. Seek medical advice if diarrhea is severe or contains blood.
Rash (Common (5-10%))
Report any rash to your doctor immediately, as it may be an early sign of a hypersensitivity reaction.

🚨 Serious Side Effects

Hypersensitivity reaction (Uncommon (1-5%))
Stop this medicine and seek emergency medical help if you develop fever, rash, nausea, vomiting, diarrhea, abdominal pain, sore throat, cough, or shortness of breath.
Lactic acidosis (Rare (<0.1%))
Seek immediate medical attention if you experience rapid breathing, extreme tiredness, muscle pain, or stomach pain with nausea and vomiting.
Severe liver toxicity (Rare (<0.1%))
Report yellowing of the skin or eyes, dark urine, or severe abdominal pain to your doctor right away.
Immune reconstitution syndrome (Uncommon (1-5%))
Tell your doctor if you notice new symptoms like fever, swollen glands, or worsening of existing infections after starting HIV treatment.
Heart attack (Rare (<0.1%))
Seek emergency care for chest pain, shortness of breath, or pain radiating to the arm or jaw.

⚠️ Rare Side Effects

Pancreatitis
Seek immediate medical attention for severe upper abdominal pain that may radiate to the back.
Severe skin reactions such as Stevens-Johnson syndrome
Stop the medicine and go to an emergency room if you develop a painful rash with blisters or peeling skin.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Methadone Major
Ribavirin Major
Alcohol Moderate
Orlistat Moderate

🚨 Major Interactions

  • Methadone
  • Ribavirin

⚡ Moderate Interactions

  • Alcohol
  • Orlistat

🍷 Alcohol Interaction

Alcohol may increase the blood levels of this medicine by competing for the same liver enzymes. This can increase the risk of side effects, especially liver problems. It is best to avoid alcohol or limit its use while taking this medicine. Discuss with your doctor if you consume alcohol regularly.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Patients who are positive for the HLA-B*5701 allele","Patients with a previous hypersensitivity reaction to abacavir","Patients with moderate to severe liver impairment","Breastfeeding mothers in settings where safe alternatives are available","Use as monotherapy for HIV infection"]

⚠️ Warnings & Precautions

["Serious hypersensitivity reactions can occur, sometimes without a rash. Stop the medicine and seek medical help immediately if a reaction is suspected.","Lactic acidosis and severe liver enlargement can occur, sometimes fatally. Report symptoms like rapid breathing, extreme tiredness, or abdominal pain.","Immune reconstitution syndrome may occur when starting HIV treatment, causing hidden infections to become active.","This medicine does not cure HIV and does not prevent transmission of the virus to others.","Patients with liver disease should be monitored closely because the medicine can worsen liver function.","Redistribution of body fat may occur with long-term antiretroviral therapy.","This medicine may interact with other medicines, so inform your doctor about all medicines you take."]

🤱 Lactation Safety

Abacavir is excreted in human breast milk. In many settings, breastfeeding is not recommended for mothers with HIV because of the risk of transmitting the virus to the baby. However, in some resource-limited settings, exclusive breastfeeding may be advised when safe alternatives are not available. Mothers should consult their healthcare provider to make an informed decision.

💊 Overdose Management

There is no specific antidote for an overdose of this medicine. If an overdose is suspected, seek emergency medical care immediately. Treatment should be supportive and symptomatic, including monitoring of vital signs and liver function. Hemodialysis may not significantly remove abacavir from the body.

⏰ Missed Dose

If you miss a dose of this medicine, 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 take two doses at the same time to make up for a missed dose. If you are unsure what to do, contact your doctor or pharmacist.

Additional Safety Advice

General Safety

This medicine must only be taken under the supervision of a doctor experienced in treating HIV infection. Never start, stop, or change the dose without medical advice. Always take this medicine with other antiretroviral medicines as prescribed. Before starting, a blood test for HLA-B*5701 must be done. If the test is positive, this medicine should not be used. If you develop a rash, fever, nausea, vomiting, diarrhea, abdominal pain, sore throat, cough, or difficulty breathing, stop taking this medicine and seek medical help immediately. Do not restart this medicine after such symptoms unless a specialist confirms it is safe. Regular blood tests for liver function, kidney function, viral load, and CD4 count are important. This medicine does not prevent the transmission of HIV to others, so continue safe practices. Store this medicine at room temperature away from moisture and heat. Keep all appointments with your healthcare team.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may have reduced liver and kidney function, so this medicine should be used with caution. Regular monitoring is advised. The dose may need adjustment.

🤰 Pregnancy Planning (TTC)

If you are planning pregnancy, consult your doctor. This medicine can be continued during pregnancy under medical supervision. Effective HIV treatment is important for both mother and baby.

🏥 Post-Surgery Considerations

Inform your surgeon and anesthesiologist that you are taking this medicine. It may interact with some anesthetic agents. Continue taking it unless told otherwise.

🦷 Dental Procedures

Inform your dentist that you are taking this medicine. It may interact with some medicines used in dentistry. Maintain good oral hygiene.

💚 Lifestyle Tips for Better Results

🏃
Take your medicine at the same time every day.
🥗
Maintain a healthy balanced diet.
😴
Exercise regularly to support immune function.
💧
Get adequate sleep.
🧘
Avoid alcohol and smoking.
🌞
Practice safe sex to prevent transmission.
🚭
Keep all medical appointments.

🏋️ Exercise Considerations

Moderate exercise is encouraged, but if you experience fatigue, dizziness, or shortness of breath, stop and consult your doctor. Avoid strenuous activity if you have heart risk factors.

🥗 Diet Recommendations

Eat a balanced diet rich in fruits and vegetables.
Include lean proteins and whole grains.
Stay well hydrated.
Limit processed foods and sugary drinks.

💼 Impact on Daily Work & Life

This medicine may cause fatigue or dizziness in some people. Avoid driving or operating heavy machinery until you know how it affects you. Most people can continue their normal daily activities.

🛑 When to Stop This Medicine

Do not stop this medicine without consulting your doctor. If you experience a hypersensitivity reaction, stop immediately and seek medical help. Your doctor may stop the medicine if you develop severe liver toxicity or lactic acidosis.

📅 Long-Term Use Effects

Long-term use of this medicine is generally safe when monitored properly. However, it may cause fat redistribution, increased cholesterol, and a possible increased risk of heart attack. Regular monitoring of liver function, kidney function, viral load, and CD4 count is essential. Do not stop the medicine without medical advice.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Other antiretroviral regimens

Alternative NRTIs or other classes may be used if this medicine is not suitable.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

Patients with HIV should receive recommended vaccines, including influenza, pneumococcal, and hepatitis B vaccines. Live vaccines should be avoided if the CD4 count is very low. Discuss with your doctor.

📦 Storage Guide

✅ DO

Store at room temperature (20-25°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 and moisture

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

When traveling, carry this medicine in its original packaging with a copy of your prescription. Keep it in your hand luggage to avoid loss or temperature extremes. Carry enough supply for the entire trip plus extra in case of delays. If crossing time zones, adjust dosing times gradually in consultation with your doctor. Store at room temperature and avoid leaving it in a hot car. Check customs regulations for carrying prescription medicines in your destination country.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 35-year-old man newly diagnosed with HIV
He was started on a combination regimen including this medicine after testing negative for HLA-B*5701. Within a few weeks, his viral load dropped significantly and his CD4 count improved. He experienced mild nausea initially, which resolved after taking the medicine with food. He emphasized the importance of never missing a dose.
💡 Lesson: Adherence to combination therapy and regular monitoring are key to successful HIV treatment.
👤 A 28-year-old woman with HIV planning pregnancy
She was already on a stable regimen containing this medicine. Her doctor monitored her closely throughout pregnancy. She delivered a healthy baby and continued treatment. She was advised not to breastfeed due to the risk of HIV transmission.
💡 Lesson: This medicine can be used safely during pregnancy under medical supervision, but breastfeeding is generally not recommended.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine starts reducing the virus within weeks, but the full benefit is seen over months with consistent use.

Q: Can I stop taking this medicine if I feel better?

A: No, you must not stop without your doctor's advice. Stopping can cause the virus to become resistant.

Q: Is this medicine a cure for HIV?

A: No, it controls the virus but does not cure HIV. You must continue treatment lifelong.

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

A: Take it as soon as you remember. If it is almost time for the next dose, skip the missed dose. Do not double dose.

Q: Can I take this medicine with other medicines?

A: Some medicines can interact. Always inform your doctor about all medicines you take.

🤔 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 a-bec 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 HIV infection.
    Fact: This medicine does not cure HIV. It controls the virus and must be taken lifelong as part of combination therapy.
  • Myth: This medicine can be taken alone to treat HIV.
    Fact: This medicine must always be used with other antiretroviral medicines to prevent resistance.
  • Myth: This medicine is safe for everyone.
    Fact: This medicine is not safe for people who carry the HLA-B*5701 allele or those with a previous hypersensitivity reaction to abacavir.

🔄 Alternative Options

Generic Alternatives

  • Abacavir 300 mg tablet

Brand Alternatives

  • A-Bec Tablet

📊 Comparison with Similar Medicines

MedicineClassCommon UseKey Side Effect
AbacavirNRTIHIV-1 infectionHypersensitivity reaction
LamivudineNRTIHIV-1 infection, Hepatitis BHeadache, nausea
TenofovirNtRTIHIV-1 infection, Hepatitis BKidney toxicity, bone loss

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