Hydroxychloroquine 300mg Tablet: 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
- Blurred vision, difficulty reading, or changes in color vision
- Muscle weakness or numbness in the hands or feet
- Irregular heartbeat, palpitations, or fainting
- Severe hypoglycemia symptoms such as confusion, sweating, or shakiness
- Signs of a severe allergic reaction such as swelling of the face, lips, or throat, or difficulty breathing
- Yellowing of the skin or eyes, dark urine, or severe abdominal pain
- Unusual bruising or bleeding, or signs of infection such as fever or sore throat
- Severe skin rash with blistering or peeling
If experiencing severe symptoms, call emergency services immediately.
What is hcqs 300 tablet used for?
This medicine contains hydroxychloroquine 300 mg, an antimalarial and disease-modifying antirheumatic drug used to treat rheumatoid arthritis, lupus, and malaria. It works by reducing inflammation and immune system activity. It requires regular eye exams due to the risk of retinal damage.
- Generic Name: Hydroxychloroquine (300mg)
- Manufacturer: Ipca Laboratories Ltd
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 hcqs 300 tablet के बारे में (Hindi Summary)
उपयोग: यह दवा हाइड्रॉक्सीक्लोरोक्वीन 300 मिलीग्राम युक्त एक टैबलेट है, जिसका उपयोग मुख्य रूप से रूमेटॉइड आर्थराइटिस, सिस्टमिक ल्यूपस एरिथेमेटोसस और मलेरिया के इलाज में किया जाता है। यह शरीर की प्रतिरक्षा प्रणाली को नियंत्रित करके सूजन और दर्द को कम करने में मदद करती है। यह दवा धीरे-धीरे काम करती है और इसका पूरा असर दिखने में कई हफ्ते लग सकते हैं। इसका सेवन डॉक्टर के निर्देशानुसार ही करें।
साइड इफेक्ट्स: इस दवा के आम दुष्प्रभावों में जी मिचलाना, उल्टी, पेट दर्द, दस्त, सिरदर्द, चक्कर आना और त्वचा पर रैश शामिल हैं। ये आमतौर पर हल्के होते हैं और कुछ समय में ठीक हो जाते हैं। दवा को भोजन के साथ लेने से पेट की तकलीफ कम हो सकती है। गंभीर दुष्प्रभावों में दृष्टि में बदलाव, मांसपेशियों में कमजोरी, अनियमित दिल की धड़कन और एलर्जी की प्रतिक्रिया शामिल हैं। अगर आपको आंखों में कोई बदलाव दिखे या सांस लेने में तकलीफ हो, तो तुरंत डॉक्टर से संपर्क करें।
सुरक्षा सलाह: इस दवा को हमेशा डॉक्टर के बताए अनुसार ही लें। अपनी मर्जी से दवा की मात्रा न बढ़ाएं और न ही कम करें। दवा को भोजन या दूध के साथ लें ताकि पेट में जलन न हो। नियमित रूप से आंखों की जांच करवाएं क्योंकि यह दवा लंबे समय तक लेने पर आंखों को प्रभावित कर सकती है। शराब का सेवन न करें। एंटासिड या काओलिन लेने से पहले या बाद में कम से कम 4 घंटे का अंतराल रखें। गर्भवती या स्तनपान कराने वाली महिलाएं डॉक्टर से सलाह लें। दवा को ठंडी और सूखी जगह पर रखें।
💊 hcqs 300 tablet Uses & Benefits
- [{"condition":"Rheumatoid arthritis","description":"This medicine is used as a disease-modifying antirheumatic drug to reduce joint pain, inflammation" class="semantic-link" title="Medicines for swelling">swelling, and stiffness, and to slow joint damage in patients with active rheumatoid arthritis.","evidence":"Well-established"},{"condition":"Systemic lupus erythematosus (SLE)","description":"It helps control skin rashes, joint pain, fatigue, and other symptoms of lupus, and it reduces the frequency of disease flares.
- It is often used as a cornerstone therapy in lupus.","evidence":"Well-established"},{"condition":"Sjögren's syndrome","description":"This medicine can improve dryness, joint pain, and fatigue in some patients with Sjögren's syndrome, although response varies.","evidence":"Moderate"},{"condition":"Malaria (treatment and prevention)","description":"Hydroxychloroquine is used to treat uncomplicated malaria caused by susceptible strains of Plasmodium species and to prevent malaria in travelers to endemic areas, though resistance is increasing in some regions.","evidence":"Well-established for susceptible strains"},{"condition":"Discoid lupus erythematosus","description":"It is effective for treating chronic skin lesions of discoid lupus, helping to reduce redness, scaling, and scarring.","evidence":"Well-established"}]
Off-label uses: [{"condition":"Porphyria cutanea tarda","description":"Low-dose hydroxychloroquine may be used off-label to reduce iron overload and skin blistering in porphyria cutanea tarda, but it requires close specialist supervision.","evidence":"Limited"},{"condition":"Antiphospholipid syndrome","description":"Sometimes added to anticoagulation therapy to reduce thrombosis risk, but evidence is not definitive.","evidence":"Limited"},{"condition":"Sarcoidosis","description":"May be used off-label for skin and joint involvement of sarcoidosis, but it is not a first-line treatment.","evidence":"Limited"},{"condition":"Q fever","description":"Hydroxychloroquine has been used off-label in combination with doxycycline for chronic Q fever, but this is not a standard approved use.","evidence":"Limited"}]
Primary treatment for: Rheumatoid arthritis
Also treats: Systemic lupus erythematosus, Sjögren's syndrome, Malaria, Discoid lupus erythematosus
📋 Drug Information
| Generic Name(s) | Hydroxychloroquine (300mg) |
| Brand Name | hcqs 300 tablet |
| Manufacturer | Ipca Laboratories Ltd |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | PAIN ANALGESICS |
| Action Class | Disease Modifying Anti-Rheumatoid Drugs (DMARDs)- Non biologics |
| Route of Administration | Oral |
| Storage | Store this medicine at room temperature between 15°C and 30°C (59°F to 86°F) in a dry place. Keep the tablets in their original container, tightly closed, and protect them from light and moisture. Do not store in the bathroom. Keep out of reach of children and pets. |
| Shelf Life | The shelf life of this medicine is typically 24 months from the date of manufacture, but it may vary. Always check the expiry date on the packaging before use. Do not use the medicine after the expiry date has passed. |
| WHO Guideline | The World Health Organization recommends hydroxychloroquine as a treatment option for uncomplicated malaria in areas where the parasite is susceptible, but resistance has led to decreased use in some regions. For autoimmune diseases, WHO does not provide specific guidelines, but it is recognized as an essential medicine. |
| ICMR Guideline | The Indian Council of Medical Research (ICMR) includes hydroxychloroquine in its guidelines for the management of rheumatoid arthritis and systemic lupus erythematosus. It is recommended as a first-line disease-modifying antirheumatic drug for these conditions, with regular monitoring for ocular toxicity. |
👨⚕️ 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
Hydroxychloroquine is a weak base that accumulates in lysosomes and other acidic intracellular compartments. By raising the pH within these organelles, it interferes with antigen processing and presentation, reduces the activity of toll-like receptors, and dampens the production of pro-inflammatory cytokines such as tumor necrosis factor-alpha and interleukin-6. It also inhibits the activation of T cells and reduces the formation of immune complexes, which are key drivers of autoimmune tissue damage. In malaria, hydroxychloroquine concentrates in the food vacuole of the parasite, where it prevents the polymerization of toxic heme into hemozoin, leading to accumulation of free heme that kills the parasite. These combined actions explain its dual role as an antimalarial and as a disease-modifying antirheumatic drug.
Mechanism Steps
💡 How to Take hcqs 300 tablet
Strength: This medicine is available as an immediate-release tablet containing 300 mg of hydroxychloroquine.
Dosage Information
| Adult Dosage | The dose of this medicine must be individualized by a qualified clinician based on the indication, age, weight, renal and hepatic function, and response to therapy. For rheumatoid arthritis, a common starting dose is 400 to 600 mg daily, which may be reduced to 200 to 400 mg daily for maintenance. For systemic lupus erythematosus, the usual dose is 200 to 400 mg daily. For malaria treatment, a loading dose followed by a maintenance dose is used, and for prophylaxis, a weekly dose is taken. Do not adjust the dose without consulting your doctor. |
| Pediatric Dosage | Pediatric dosing is not established from available information. Consult a pediatrician for appropriate dosing in children. |
| Elderly Dosage | Elderly patients may be more sensitive to the effects of this medicine, particularly ocular and cardiac toxicity. The dose should be individualized by a clinician, and renal function should be assessed before starting therapy. Regular monitoring for side effects is recommended. |
| Renal Impairment | In patients with renal impairment, the dose of this medicine may need to be reduced. The extent of dose adjustment depends on the degree of impairment and should be determined by a qualified clinician. Close monitoring for toxicity is advised. |
| Hepatic Impairment | In patients with hepatic impairment, the dose of this medicine may need to be reduced or the medicine avoided. The dose should be individualized by a clinician based on liver function tests and clinical response. |
| Maximum Daily Dose | The maximum daily dose of hydroxychloroquine should not exceed 400 mg per day for most indications, although higher doses may be used in acute malaria treatment under medical supervision. Exceeding the recommended dose increases the risk of serious side effects, including retinal toxicity and cardiac arrhythmias. |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of hcqs 300 tablet
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Digoxin | Major | |
| Methotrexate | Major | |
| Insulin | Major | |
| Amiodarone | Major | |
| Antacids | Major | |
| Fluoxetine | Moderate | |
| Rifampin | Moderate | |
| Ketoconazole | Moderate | |
| Mefloquine | Moderate | |
| Penicillamine | Moderate |
🚨 Major Interactions
- Digoxin
- Methotrexate
- Antidiabetic drugs (insulin, sulfonylureas)
- QT-prolonging drugs (e.g., amiodarone, sotalol, azithromycin)
- Antacids and kaolin
⚡ Moderate Interactions
- CYP2D6 inhibitors (e.g., fluoxetine, paroxetine)
- CYP3A4 inducers (e.g., rifampin, carbamazepine)
- CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin)
- Other antimalarials (e.g., mefloquine)
- Penicillamine
🍷 Alcohol Interaction
Alcohol should be avoided while taking this medicine. Both alcohol and hydroxychloroquine can affect the liver, and combining them may increase the risk of liver damage. Alcohol can also worsen stomach irritation and increase the risk of gastrointestinal bleeding. Additionally, alcohol may exacerbate the dizziness and drowsiness that some patients experience with this medicine. If you drink alcohol regularly, discuss it with your doctor before starting this medicine.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Known hypersensitivity to hydroxychloroquine, chloroquine, or any component of the formulation.","Pre-existing retinopathy or visual field changes attributable to 4-aminoquinoline compounds.","Use in patients with severe hepatic impairment without specialist supervision.","Use in patients with severe renal impairment without dose adjustment and close monitoring.","Concurrent use with other drugs that are known to prolong the QT interval, unless under specialist care.","Patients with a history of porphyria, as hydroxychloroquine can exacerbate the condition.","Patients with psoriasis, as hydroxychloroquine can worsen skin lesions."]
⚠️ Warnings & Precautions
["Ocular toxicity: Hydroxychloroquine can cause irreversible retinal damage. Baseline and regular eye examinations are mandatory. Discontinue if retinopathy is detected.","Cardiomyopathy: Rare cases of cardiomyopathy and heart failure have been reported. Monitor cardiac function in high-risk patients.","Hypoglycemia: Hydroxychloroquine can cause severe hypoglycemia, especially in diabetic patients. Monitor blood glucose closely.","Bone marrow suppression: Rare cases of aplastic anemia, agranulocytosis, and thrombocytopenia have been reported. Monitor CBC periodically.","Neuromuscular effects: Proximal myopathy and neuropathy can occur. Report muscle weakness or numbness promptly.","Skin reactions: Severe skin reactions such as Stevens-Johnson syndrome and toxic epidermal necrolysis have been reported rarely. Discontinue at first sign of rash.","Gastrointestinal effects: Nausea, vomiting, and diarrhea are common. Taking with food may help.","Pediatric use: Safety and effectiveness in children have not been fully established for all indications. Use only under specialist supervision.","Elderly use: Elderly patients may be more susceptible to side effects, especially ocular and cardiac toxicity. Use with caution.","Pregnancy and lactation: Use only if clearly needed. Consult your doctor."]
🤱 Lactation Safety
Hydroxychloroquine passes into breast milk in small amounts. The amount is generally considered too low to cause harm to a nursing infant, and it is often compatible with breastfeeding. However, because of the potential for serious adverse reactions in the infant, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother. Consult your doctor before breastfeeding while taking this medicine.
💊 Overdose Management
Overdose of hydroxychloroquine can be life-threatening and requires immediate medical attention. Symptoms of overdose include severe headache, drowsiness, visual disturbances, convulsions, irregular heartbeat, and cardiac arrest. If you suspect an overdose, call emergency services immediately. Treatment is supportive and may include gastric lavage, activated charcoal, and management of cardiac arrhythmias. There is no specific antidote, but intravenous diazepam and epinephrine may be used for cardiovascular support. Patients should be monitored in a hospital setting until stable.
⏰ Missed Dose
If you miss a dose of this medicine, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose to make up for a missed one. If you are unsure what to do, contact your doctor or pharmacist for advice.
Additional Safety Advice
Always take this medicine exactly as prescribed by your doctor. Do not increase, decrease, or stop the dose on your own, because sudden changes can worsen your condition or cause withdrawal effects. Take the tablet with food or milk to reduce stomach irritation. Keep all scheduled appointments, especially eye examinations, because this medicine can affect the retina over time. Tell your doctor if you have kidney or liver problems, G6PD deficiency, psoriasis, or porphyria, as these conditions may require dose adjustments or extra monitoring. Avoid alcohol while taking this medicine because it can increase the risk of liver problems and stomach bleeding. Do not take antacids, kaolin, or sucralfate within four hours of this medicine, as they can reduce its absorption. If you are pregnant, planning pregnancy, or breastfeeding, discuss the risks and benefits with your doctor before continuing. Store the tablets in their original container at room temperature, away from moisture and direct sunlight. Keep out of reach of children. Do not share this medicine with anyone else, even if they have similar symptoms.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients are at higher risk of retinal toxicity, cardiac complications, and drug interactions. Renal function should be assessed before starting therapy, and regular monitoring is essential. Lower doses may be appropriate. Falls risk may be increased if dizziness occurs.
🤰 Pregnancy Planning (TTC)
If you are planning to become pregnant, discuss this medicine with your doctor. Hydroxychloroquine is generally considered safe during pregnancy for autoimmune conditions, but the dose may need adjustment. For malaria prevention, alternative options may be considered. Do not stop the medicine without medical advice.
🏥 Post-Surgery Considerations
This medicine may increase the risk of bleeding and impair wound healing. Inform your surgeon that you are taking this medicine before any surgery. Your doctor may advise you to temporarily stop the medicine before surgery, depending on the procedure and your condition.
🦷 Dental Procedures
Inform your dentist that you are taking this medicine before any dental procedure. It may increase the risk of bleeding and infection. Your dentist may recommend antibiotics or other precautions. Do not stop the medicine without consulting your doctor.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
While exercise is beneficial, patients with rheumatoid arthritis or lupus should avoid high-impact activities that stress the joints. Low-impact exercises like swimming, cycling, and walking are recommended. If you experience muscle weakness or neuropathy, consult your doctor before starting any new exercise regimen. Always warm up and cool down to prevent injury.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine may cause dizziness or blurred vision in some patients, which can affect your ability to drive or operate machinery. Avoid driving until you know how the medicine affects you. Most patients can continue their normal work and daily activities, but those with physically demanding jobs may need to take precautions. Discuss any work-related concerns with your doctor.
🛑 When to Stop This Medicine
Do not stop taking this medicine without consulting your doctor. If you experience serious side effects such as vision changes, severe allergic reactions, or irregular heartbeat, seek immediate medical attention and your doctor will decide whether to discontinue. For planned discontinuation, your doctor will taper the dose gradually to prevent a flare of your condition.
📅 Long-Term Use Effects
Long-term use of this medicine requires regular monitoring for retinal toxicity, which can be irreversible. The risk increases with higher doses and longer duration of therapy. Other long-term effects may include skin pigmentation changes, hair lightening, and rare cardiac or neuromuscular complications. Regular eye exams, blood tests, and clinical assessments are recommended to detect and manage these effects early. The benefits of controlling autoimmune disease often outweigh the risks when monitored appropriately.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Can complement medicine for chronic pain and improve joint function.
Evidence: Well-establishedAnti-inflammatory diets may help reduce symptoms in autoimmune conditions.
Evidence: ModerateTechniques like yoga and meditation can improve quality of life.
Evidence: ModerateMay provide pain relief in some patients with rheumatoid arthritis.
Evidence: Limited💉 Vaccination Considerations
💉 If You're Getting Vaccinated
This medicine may suppress the immune system, which could affect your response to vaccines. Live vaccines should be avoided while taking this medicine. Inactivated vaccines are generally safe, but their effectiveness may be reduced. Consult your doctor before receiving any vaccine.
📦 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
✅ DO
Keep out of reach of children
❌ DON'T
Do not use after expiry date
✈️ Traveling with This Medicine
When traveling, carry this medicine in its original packaging with a copy of your prescription. Keep it in your carry-on luggage to avoid loss or temperature extremes. If you are crossing time zones, consult your doctor about adjusting the dosing schedule, especially for malaria prophylaxis. Store the tablets at room temperature and protect them from moisture. Check the customs regulations of your destination regarding prescription medicines. Carry enough supply for your entire trip and a little extra in case of delays.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: For autoimmune conditions like rheumatoid arthritis and lupus, it may take 4 to 12 weeks to notice improvement, and up to 6 months for full effect. For malaria, it works within 24 to 48 hours.
A: Yes, taking it with food or milk is recommended to reduce stomach upset. Avoid taking antacids within 4 hours of this medicine.
A: Long-term use can cause retinal damage, which may present as blurred vision, difficulty reading, or changes in color vision. Regular eye exams are essential to detect early changes.
A: Hydroxychloroquine is generally considered safe during pregnancy when prescribed for autoimmune conditions. However, consult your doctor to weigh the benefits and risks.
A: No, do not stop without consulting your doctor. Stopping suddenly can cause a flare of your condition. Your doctor will decide if and when to discontinue.
🤔 Common Patient Concerns
🔄 Substitutes for hcqs 300 tablet
View AllAlternative brands with exact same active ingredient:
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hqra 300mg tabletRhumasafe Pharmaceutical ₹103.13 70.2% CHEAPER
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dxq 300 tabletNahren Lifesciences ₹107.81 68.8% CHEAPER
-
had q 300mg tabletUHC Life Sciences ₹117.19 66.1% CHEAPER
-
hetquenil 300 tabletHetero Healthcare Limited ₹132.66 61.6% CHEAPER
-
vohq 300mg tabletVasu Organics Pvt Ltd ₹142.00 58.9% CHEAPER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: Hydroxychloroquine is a cure for COVID-19.
Fact: Hydroxychloroquine is not approved for the treatment or prevention of COVID-19. Clinical trials have not shown a consistent benefit, and it can cause serious side effects. - Myth: Hydroxychloroquine is a painkiller that works immediately.
Fact: Hydroxychloroquine is not a painkiller. It works slowly to modify the immune system and may take weeks to months to show benefit in autoimmune diseases. - Myth: You can stop taking hydroxychloroquine once you feel better.
Fact: You should not stop taking hydroxychloroquine without consulting your doctor. Stopping suddenly can cause a flare of your underlying condition. - Myth: Hydroxychloroquine is safe for everyone.
Fact: Hydroxychloroquine is not safe for everyone. It is contraindicated in certain conditions and requires monitoring for side effects, especially eye toxicity.
🔄 Alternative Options
Generic Alternatives
- Hydroxychloroquine sulfate 300 mg tablet
Brand Alternatives
- Plaquenil
- HCQS
- Zy-Q
- Hydroquin