Eufal 100mg Tablet (Quinine): Complete Medicine Guide
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
- Unusual bruising or bleeding
- Severe dizziness or fainting
- Ringing in ears or hearing loss
If experiencing severe symptoms, call emergency services immediately.
What is Sulfaquin 100mg Tablet used for?
This medicine contains quinine, an antimalarial drug used to treat uncomplicated malaria. It works by killing the malaria parasite in red blood cells. It is also sometimes used for leg cramps but is not recommended for routine use due to safety concerns. Always take it exactly as prescribed by your doctor.
- Generic Name: Quinine (100mg)
- Manufacturer: Indica Laboratories Pvt Ltd
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 Sulfaquin 100mg Tablet के बारे में (Hindi Summary)
उपयोग: यह दवा क्विनाइन नामक एंटीमलेरियल दवा है, जिसका उपयोग मलेरिया के इलाज के लिए किया जाता है। यह मलेरिया परजीवी को मारती है और बुखार, ठंड लगना और पसीना जैसे लक्षणों को कम करती है। यह दवा कभी-कभी पैरों की ऐंठन के लिए भी दी जाती है, लेकिन इसके गंभीर दुष्प्रभावों के कारण इसका नियमित उपयोग नहीं किया जाता। इस दवा को डॉक्टर के निर्देशानुसार ही लें, और बिना सलाह के बंद न करें।
साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में जी मिचलाना, उल्टी, सिरदर्द, चक्कर आना, धुंधली दृष्टि और कानों में घंटी बजना शामिल हैं। गंभीर दुष्प्रभावों में खून में शर्करा की कमी, रक्त विकार, हृदय की धड़कन में गड़बड़ी और दृष्टि या सुनने की समस्या हो सकती है। यदि आपको सीने में दर्द, सांस लेने में कठिनाई, त्वचा या आंखों का पीला पड़ना, या गंभीर पेट दर्द हो, तो तुरंत डॉक्टर से मिलें।
सुरक्षा सलाह: इस दवा को डॉक्टर के बताए अनुसार ही लें। इसे भोजन के साथ लें ताकि पेट की जलन कम हो। शराब का सेवन न करें क्योंकि इससे दुष्प्रभाव बढ़ सकते हैं। अपने डॉक्टर को अपनी सभी दवाओं और स्वास्थ्य समस्याओं के बारे में बताएं। यदि आपको चक्कर आते हैं या धुंधला दिखता है, तो वाहन न चलाएं। दवा को ठंडी, सूखी जगह पर रखें और बच्चों की पहुंच से दूर रखें।
💊 Sulfaquin 100mg Tablet Uses & Benefits
- [{"condition":"Uncomplicated malaria due to Plasmodium falciparum","description":"This medicine is used to treat uncomplicated malaria in settings where artemisinin-based combination therapies are not available or are contraindicated.
- It is often combined with other antimalarials such as doxycycline or clindamycin to improve efficacy and reduce the risk of resistance.","evidence":"Well-established"},{"condition":"Nocturnal leg cramps","description":"Quinine has been used off-label for the prevention of nocturnal leg cramps in adults, but regulatory agencies have restricted this use because of serious hematologic and cardiac risks.
- It is generally not recommended unless other treatments have failed and the benefits clearly outweigh the risks.","evidence":"Limited"},{"condition":"Babesiosis","description":"This medicine may be used in combination with clindamycin for the treatment of babesiosis, a tick-borne parasitic infection, in selected patients.
- It is not a first-line therapy in all cases and should be guided by an infectious disease specialist.","evidence":"Moderate"}]
Off-label uses: [{"condition":"Nocturnal leg cramps","description":"Sometimes prescribed off-label for leg cramps, but this use is discouraged due to safety concerns and lack of consistent efficacy.","evidence":"Limited"},{"condition":"Myotonia congenita","description":"Rarely used off-label to reduce muscle stiffness in myotonia congenita, but evidence is limited and safer alternatives exist.","evidence":"Limited"}]
Primary treatment for: Malaria
Also treats: Babesiosis, Nocturnal leg cramps
📋 Drug Information
| Generic Name(s) | Quinine (100mg) |
| Brand Name | Sulfaquin 100mg Tablet |
| Manufacturer | Indica Laboratories Pvt Ltd |
| Packaging / Form | strip of 10 tablets (Allopathy) |
| Therapeutic Class | |
| Action Class | |
| Route of Administration | Oral |
| Storage | Store at room temperature between 15°C and 30°C (59°F to 86°F). Keep in a dry place, away from direct sunlight and moisture. Keep out of reach of children. |
| Shelf Life | 24 months from the date of manufacture, unless otherwise specified on the packaging. |
| WHO Guideline | The World Health Organization recommends artemisinin-based combination therapies (ACTs) as first-line treatment for uncomplicated Plasmodium falciparum malaria. Quinine is recommended as an alternative when ACTs are not available or are contraindicated. For severe malaria, intravenous artesunate is preferred over quinine. |
| ICMR Guideline | The Indian Council of Medical Research recommends ACTs as first-line treatment for uncomplicated P. falciparum malaria in India. Quinine may be used as an alternative in specific situations, but it is not the preferred first-line agent. |
👨⚕️ Doctor's Practical Tips
Evidence-based practical advice from experienced clinicians
🔍 Is This Medicine Right for Your Symptom?
Educational reference. Always consult a doctor for diagnosis.
🔬 How This Medicine Works (Pharmacology)
Pharmacokinetics
How It Works
This medicine works by accumulating in the food vacuole of susceptible malaria parasites, where it interferes with the digestion of hemoglobin. Quinine forms a complex with heme, preventing its conversion into hemozoin, which leads to the buildup of toxic free heme and reactive oxygen species that kill the parasite. It also affects the parasite's membrane transport and may inhibit nucleic acid synthesis. In humans, quinine has mild analgesic, antipyretic, and anti-inflammatory effects, and it can affect skeletal muscle membrane excitability, which explains its use in leg cramps.
Mechanism Steps
💡 How to Take Sulfaquin 100mg Tablet
Strength: Each tablet contains 100 mg of quinine.
Dosage Information
| Adult Dosage | The usual adult dose of this medicine for uncomplicated malaria is 600 mg to 650 mg of quinine salt every 8 hours for 3 to 7 days, often combined with doxycycline or clindamycin. For nocturnal leg cramps, a lower dose may be used, but this is generally discouraged. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function, and concurrent medications. Do not self-medicate. |
| Pediatric Dosage | Pediatric dosing is not established from available information. Consult a pediatrician for appropriate dosing based on weight and clinical condition. |
| Elderly Dosage | Elderly patients may be more sensitive to the effects of quinine, especially cardiac and neurological effects. Dose should be individualized by a clinician, and renal function should be assessed before starting treatment. |
| Renal Impairment | In patients with renal impairment, quinine dose may need to be reduced. Monitor renal function and adjust dose as clinically indicated. Consult a nephrologist or clinical pharmacist for guidance. |
| Hepatic Impairment | In patients with hepatic impairment, quinine metabolism may be prolonged, increasing the risk of toxicity. Dose reduction and close monitoring are recommended. Consult a hepatologist for individualized dosing. |
| Maximum Daily Dose | The maximum daily dose of quinine for adults is generally 1,800 mg to 2,000 mg, but this must be determined by a qualified clinician based on the indication and patient factors. |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of Sulfaquin 100mg Tablet
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Warfarin | Major | |
| Digoxin | Major | |
| Amiodarone | Major | |
| Mefloquine | Major | |
| Ritonavir | Major | |
| Cimetidine | Moderate | |
| Rifampicin | Moderate | |
| Antacids | Moderate | |
| Sucralfate | Moderate | |
| Grapefruit juice | Moderate |
🚨 Major Interactions
- Warfarin
- Digoxin
- Amiodarone
- Mefloquine
- Ritonavir
⚡ Moderate Interactions
- Cimetidine
- Rifampicin
- Antacids
- Sucralfate
🍷 Alcohol Interaction
Alcohol should be avoided while taking this medicine because it can worsen side effects such as dizziness, drowsiness, and low blood sugar. Alcohol may also increase the risk of liver toxicity and cardiac arrhythmias. It is best to abstain from alcohol during treatment.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Hypersensitivity to quinine or any component of the formulation.","Glucose-6-phosphate dehydrogenase (G6PD) deficiency.","History of optic neuritis or quinine-induced visual disturbances.","History of blackwater fever.","Prolonged QT interval or congenital long QT syndrome.","Myasthenia gravis.","Severe hepatic impairment.","Concurrent use with mefloquine or other QT-prolonging drugs."]
⚠️ Warnings & Precautions
["Quinine can cause severe hypoglycemia; monitor blood glucose closely, especially in patients with diabetes or those receiving intravenous therapy.","Quinine can cause cinchonism, a syndrome of tinnitus, deafness, visual disturbances, nausea, and confusion; discontinue if symptoms occur.","Quinine can cause hemolysis in patients with G6PD deficiency; screen before use if risk factors present.","Quinine can prolong the QT interval; use with caution in patients with cardiac disease and avoid concurrent QT-prolonging drugs.","Quinine can cause thrombocytopenia and other blood dyscrasias; monitor CBC if symptoms develop.","Quinine may impair mental alertness; caution patients about driving or operating machinery.","Quinine should not be used for routine treatment of leg cramps due to safety concerns.","Quinine can interact with many drugs; review all medications before prescribing."]
🤱 Lactation Safety
Quinine is excreted in breast milk in small amounts. It is generally considered compatible with breastfeeding, but monitoring the infant for signs of hypoglycemia, jaundice, or irritability is advised. Consult a healthcare provider before use during lactation.
💊 Overdose Management
Overdose of quinine can cause severe cinchonism, cardiac arrhythmias, hypotension, respiratory depression, and death. Treatment is supportive and symptomatic. Activated charcoal may be administered if the patient presents within 1-2 hours of ingestion. Gastric lavage may be considered in severe cases. Monitor ECG, blood pressure, and blood glucose. Sodium bicarbonate may be used to treat cardiac toxicity. Hemodialysis or hemoperfusion may be considered in severe cases. There is no specific antidote. Seek immediate emergency medical care.
⏰ 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. If you are unsure, consult your doctor or pharmacist.
Additional Safety Advice
Take this medicine exactly as prescribed by your doctor, and do not change the dose or stop treatment early without medical advice. Swallow the tablet whole with a full glass of water, preferably with food to reduce stomach upset. Avoid alcohol while taking this medicine because it can worsen side effects and increase the risk of low blood sugar. Inform your doctor about all other medicines, supplements, and herbal products you are taking, as quinine interacts with many drugs. Do not drive or operate heavy machinery if you feel dizzy or have blurred vision. Keep all follow-up appointments and blood tests, especially if you have diabetes, heart problems, or kidney or liver disease. Store this medicine in its original container at room temperature, away from moisture and direct sunlight. Keep it out of reach of children. If you miss a dose, follow your doctor's instructions and never double the dose to catch up.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients are more susceptible to the cardiac, neurological, and metabolic side effects of this medicine. Dose reduction and close monitoring of renal function, blood glucose, and ECG are recommended. Falls risk may be increased due to dizziness.
🤰 Pregnancy Planning (TTC)
If you are planning pregnancy, discuss with your doctor before taking this medicine. Quinine may affect fertility or early pregnancy. Use effective contraception during treatment and consult your doctor for preconception counseling.
🏥 Post-Surgery Considerations
This medicine may affect blood clotting and blood sugar levels, which are important considerations after surgery. Inform your surgeon and anesthesiologist if you are taking this medicine. It may need to be stopped before elective surgery.
🦷 Dental Procedures
Inform your dentist if you are taking this medicine, as it can affect blood clotting and interact with anesthetics or other medications used during dental procedures. Your dentist may recommend monitoring or adjusting your treatment.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
Avoid strenuous exercise while taking this medicine, especially if you experience dizziness, fatigue, or muscle weakness. Light activities like walking may be fine if you feel up to it. Consult your doctor before resuming intense workouts.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine may cause dizziness, blurred vision, or fatigue, which can affect your ability to drive or operate machinery. Avoid these activities until you know how the medicine affects you. If your job requires mental alertness, discuss with your doctor about temporary adjustments.
🛑 When to Stop This Medicine
Do not stop taking this medicine without consulting your doctor. If you experience serious side effects such as ringing in the ears, vision changes, severe dizziness, or signs of an allergic reaction, stop the medicine and seek immediate medical attention. Your doctor will advise whether to discontinue or switch to an alternative treatment.
📅 Long-Term Use Effects
Long-term use of this medicine is not recommended unless specifically prescribed for a chronic condition. Prolonged use can increase the risk of blood disorders, cardiac arrhythmias, and visual or auditory damage. Regular monitoring of blood counts, liver and kidney function, and ECG may be required. Consult your doctor if you need to take this medicine for more than a few weeks.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
ACTs are the preferred first-line treatment for uncomplicated malaria and are generally more effective and better tolerated than quinine.
Evidence: Well-establishedFor severe malaria, intravenous artesunate is the treatment of choice and is superior to quinine.
Evidence: Well-establishedStretching exercises, hydration, and magnesium supplementation may help prevent leg cramps without the risks of quinine.
Evidence: Moderate💉 Vaccination Considerations
💉 If You're Getting Vaccinated
There are no known interactions between this medicine and vaccines. However, if you are acutely ill with malaria, vaccination may be deferred until you recover. Consult your doctor for personalized advice.
📦 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
When traveling with this medicine, carry it in its original packaging with a copy of your prescription. Keep it in your carry-on luggage to avoid temperature extremes. If crossing time zones, consult your doctor about adjusting dosing times. Store it at room temperature and avoid direct sunlight. Check customs regulations for carrying prescription medicines in your destination country.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: This medicine starts working within hours, but you may notice improvement in malaria symptoms within 24-48 hours. Complete the full course as prescribed.
A: Yes, taking it with food or milk helps reduce stomach upset and nausea.
A: 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.
A: Quinine should be used during pregnancy only if the potential benefit justifies the potential risk. Consult your doctor for individualized assessment.
A: No, alcohol should be avoided as it can worsen side effects and increase the risk of low blood sugar.
🤔 Common Patient Concerns
🔄 Substitutes for Sulfaquin 100mg Tablet
View AllAlternative brands with exact same active ingredient:
-
eufal 100mg tabletShreeyam Healthcare ₹20.00 64.1% CHEAPER
-
quiny 100mg tabletRelax Pharma ₹20.00 64.1% CHEAPER
-
malarquine 100mg tabletAcron Pharmaceuticals ₹20.80 62.7% CHEAPER
-
qinet 100mg tabletBennet Pharmaceuticals Limited ₹21.15 62% CHEAPER
-
qsp 100mg tabletSpire Pharma ₹21.50 61.4% CHEAPER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: Quinine is a safe and effective treatment for leg cramps.
Fact: Quinine is not recommended for routine treatment of leg cramps due to serious risks such as blood disorders and cardiac arrhythmias. It should only be used under strict medical supervision. - Myth: Quinine can be taken without a prescription.
Fact: Quinine is a prescription medicine and should only be taken under the guidance of a qualified healthcare provider. - Myth: Quinine is the best treatment for malaria.
Fact: Artemisinin-based combination therapies are the preferred first-line treatment for malaria. Quinine is an alternative in specific situations.
🔄 Alternative Options
Generic Alternatives
- Quinine sulfate 100mg tablet
- Quinine bisulfate 100mg tablet
- Quinine dihydrochloride 100mg tablet
Brand Alternatives
- Eufal 100mg tablet