| SKU: | 5 |
|---|---|
| Generic For: | Diamox |
| Active Ingredient: | Acetazolamide |
| Manufacturer: | FDC, India |
Buy Iopar SR 250mg (Acetazolamide) Online
Lopar SR 250 mg contains Acetazolamide, which reduces eye pressure. This pressure can lead to glaucoma. Too much pressure in your eye can damage your eyesight. Acetazolamide, the medicine's active ingredient, decreases the amount of fluid inside the eye. It reduces the production of aqueous humour (fluid in the eye) and lowers the eye's intraocular pressure (IOP).
Seek immediate medical attention if you get any of these conditions while taking Lopar SR: sore throat, fever, unusual bleeding or bruising, tingling or tremors in your hands or feet, pain in your side or groin area, or a rash. These symptoms could be early signs of a serious side effect.
Take extra care while driving or doing anything which requires a high level of alertness and attention. Lopar SR may cause drowsiness or dizziness, impacting your thinking and reflexes.
Acetazolamide is a sulfa-based drug. If you have ever had an allergic reaction to sulfa drugs like sulfamethoxazole, taking Acetazolamide may also cause an allergic reaction. Also, before taking Acetazolamide, inform your doctor if you have any pre-existing conditions: liver, kidney, heart, or lung disease, or if you are taking aspirin. You may not be able to take Acetazolamide safely on top of these conditions, or you may need a lower-than-usual dosage of this medication. It is unknown if this medication can harm an unborn baby while pregnant. It can pass into breast milk. However, it is not known whether it can harm a nursing baby. Notify your doctor if you are pregnant, planning to become pregnant, or breastfeeding a baby. Your thinking capability and reflexes may be impacted after taking Acetazolamide. Take care while doing an activity that requires greater mental alertness and reflexes, such as driving.
Some drugs that can interact with Acetazolamide are cyclosporine, primidone, diflunisal, lithium, aspirin, salsalate, choline salicylates, magnesium salicylates, and other drugs like aspirin. These drugs can either increase the side effects of the respective medications or reduce their effectiveness. Some medications may also be removed from the body due to the interaction.
The list of drugs mentioned above is not complete, and there may be other drugs that can interact with Lopar SR. Always consult your doctor before starting a new medication and before stopping or altering the course of any existing ones.
Some common side effects of Lopar SR are dizziness, lightheadedness, or increased urination in the first few days as your body adjusts to this medication. You may also experience blurred vision, dry mouth, drowsiness, appetite loss, stomach upset, headache, and tiredness. If any of these conditions persist or deteriorate, get medical attention immediately.
A serious side effect due to Acetazolamide is unlikely. However, get medical attention immediately if you experience any rare but serious side effects: increased body hair, hearing loss, ringing in ears, unusual tiredness, persistent nausea or vomiting, or severe stomach or abdominal pain.
However, these are not all the side effects you may notice due to Acetazolamide intake. There may be others as well.
You can take Lopar SR before or after consuming food. The dose usually depends on your condition and your response to the medicine. It is important to take this medicine until your doctor tells you not to. Use this medicine regularly to benefit from it, even if you do not have symptoms.
What is Iopar SR 250mg used for?
Iopar SR 250mg is a sustained-release tablet containing acetazolamide, a systemic carbonic anhydrase inhibitor with multiple clinical uses. In ophthalmology, it is used to lower elevated intraocular pressure (IOP) in acute angle-closure glaucoma and as adjunctive therapy when topical IOP-lowering drops are insufficient. Outside ophthalmology, acetazolamide is also used to prevent and treat altitude sickness (acute mountain sickness), manage certain types of epilepsy, and occasionally treat conditions associated with fluid retention. The 'SR' formulation provides slower, sustained drug release for more consistent plasma levels throughout the day.
How does acetazolamide in Iopar SR 250mg lower eye pressure?
Acetazolamide inhibits carbonic anhydrase II and IV — the enzymes responsible for driving aqueous humour secretion in the ciliary body of the eye. By blocking these enzymes systemically, Iopar SR significantly reduces aqueous humour production, lowering intraocular pressure. Unlike topical eye drops that act locally, oral acetazolamide works through systemic circulation, reaching the ciliary body via the bloodstream. This makes it particularly effective in acute angle-closure glaucoma where maximum IOP reduction is urgently needed, though its systemic mechanism also means a broader side effect profile compared to eye drops.
How quickly does Iopar SR 250mg lower intraocular pressure?
Iopar SR 250mg (sustained-release acetazolamide) begins lowering intraocular pressure within 2 hours of the first oral dose, with significant IOP reduction occurring within the first few hours. The sustained-release formulation maintains effective drug levels for approximately 12 hours, allowing twice-daily dosing. In acute angle-closure glaucoma, immediate-release acetazolamide is preferred for faster onset. For ongoing adjunctive IOP control in open-angle glaucoma, Iopar SR provides convenient twice-daily sustained pressure reduction as part of a combination treatment plan overseen by your ophthalmologist.
How should Iopar SR 250mg tablets be taken?
Iopar SR 250mg is typically taken twice daily — morning and evening — with food to reduce gastrointestinal side effects. Swallow the tablet whole with a full glass of water. Do not crush, chew, or split the sustained-release tablet. Maintain adequate fluid intake throughout the day while taking Iopar SR to reduce the risk of kidney stones. Avoid prolonged sun exposure, as acetazolamide can increase photosensitivity. Your ophthalmologist will determine the appropriate dose and duration based on your IOP target and overall treatment plan.
Is Iopar SR 250mg safe for long-term use in glaucoma?
Long-term use of oral acetazolamide (Iopar SR) is associated with more side effects than topical glaucoma drops, limiting its suitability for indefinite chronic use. Extended use can cause electrolyte disturbances (particularly low potassium and Sodiumium), metabolic acidosis, paraesthesias, fatigue, kidney stones, and blood disorders. Most ophthalmologists reserve Iopar SR for short-term acute use or as a bridge therapy. Regular monitoring of electrolytes, full blood count, and renal function is recommended for patients on longer courses. Discuss sustainable long-term management with your ophthalmologist.
Can Iopar SR be used for altitude sickness prevention?
Yes. Acetazolamide (Iopar SR 250mg) is a well-established preventive treatment for acute mountain sickness (AMS) — the headache, nausea, dizziness, and fatigue that occur when ascending to high altitude too quickly. It works by stimulating faster, deeper breathing (reducing altitude-induced respiratory alkalosis). The standard prophylactic dose is 125–250mg twice daily, started 1 to 2 days before ascent and continued for 2 days after reaching peak altitude. Iopar SR is particularly convenient for trekkers and climbers visiting destinations in the Himalayas, Andes, Alps, or other high-altitude regions.
Iopar SR vs topical carbonic anhydrase inhibitors: which is better for glaucoma?
Oral acetazolamide (Iopar SR) provides greater IOP reduction than topical carbonic anhydrase inhibitors like dorzolamide or brinzolamide, because systemic administration delivers higher drug concentrations to the ciliary body. However, topical agents are far better tolerated long-term, as oral acetazolamide causes systemic side effects including frequent urination, paraesthesias, fatigue, and GI upset that significantly impact quality of life. Most glaucoma guidelines recommend maximising topical therapy first, reserving oral agents like Iopar SR for acute presentations, refractory cases, or short-term bridging before surgical intervention.
Is acetazolamide (Iopar SR) the same as Diamox?
Yes. Iopar SR 250mg and Diamox SR 250mg both contain acetazolamide 250mg in a sustained-release formulation and are therapeutically equivalent. Diamox is the well-known original branded product, while Iopar SR is a trusted generic equivalent manufactured to the same pharmaceutical standards. Both are used for glaucoma (acute and adjunctive), altitude sickness prevention, and epilepsy. Patients who use Diamox for trekking or glaucoma management can switch to the more affordable Iopar SR without any loss of efficacy.
Where can I buy Iopar SR 250mg acetazolamide online?
Iopar SR 250mg is available from AllDayChemist.com, a licensed pharmacy supplying genuine ophthalmic and prescription medicines to patients in the USA, UK, Australia, and most of the countries since 2002. AllDayChemist offers authentic acetazolamide at competitive prices with discreet packaging and free worldwide shipping on eligible orders. Whether you need Iopar SR for glaucoma management or altitude sickness prevention before a high-altitude trek, AllDayChemist provides a reliable source of genuine, manufacturer-sourced acetazolamide.
Can I order Iopar SR 250mg online for altitude sickness prevention?
Yes. AllDayChemist.com ships Iopar SR 250mg internationally to the USA, UK, Australia, and most of the countries. As a trusted licensed pharmacy since 2002, AllDayChemist offers genuine acetazolamide at affordable prices with discreet packaging and free tracked shipping on qualifying orders. For trekkers and mountaineers needing altitude sickness prevention, AllDayChemist is a convenient source for stocking up before a high-altitude expedition. Always consult a travel medicine doctor before starting acetazolamide, as it is a prescription medicine requiring medical evaluation.
What are the common side effects of Iopar SR 250mg acetazolamide?
Common side effects of Iopar SR 250mg include increased urination (diuretic effect), tingling or numbness in the hands, feet, and face (paraesthesias), fatigue, nausea, appetite loss, and altered taste (particularly for carbonated beverages which taste flat). These effects are dose-related and often reduce over time. Less common but important side effects include hyponatraemia, hypokalaemia, metabolic acidosis, and kidney stones with prolonged use. Rarely, serious blood disorders such as aplastic anaemia or agranulocytosis have been reported. Ensure adequate fluid intake throughout treatment.
Who should not take Iopar SR 250mg?
Iopar SR 250mg is contraindicated in patients with known hypersensitivity to acetazolamide, sulphonamides, or related drugs. It should not be used in patients with severe renal or hepatic impairment, hyponatraemia, hypokalaemia, adrenocortical insufficiency, or hyperchloraemic acidosis. Patients with a history of kidney stones should use it with caution and ensure high fluid intake. Iopar SR should not be combined with high-dose aspirin due to a risk of metabolic acidosis. Pregnant women (especially in the first trimester) and breastfeeding women should avoid acetazolamide. Always disclose all medical conditions before use.
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