Lasix 40 is a prescription medication containing Furosemide, a loop diuretic that helps the body eliminate excess salt and water through urine. It is primarily used to reduce swelling (edema) caused by conditions such as heart failure, liver disease, or kidney disorders. In Bangladesh, Lasix is a primary choice for managing fluid overload and is manufactured by Synovia Pharma PLC (formerly Sanofi Bangladesh).
What is Lasix 40 Used For?
Lasix 40 mg is prescribed for several critical conditions:
-
Edema Management: Treatment of fluid retention associated with congestive heart failure, cirrhosis of the liver, and renal disease (including nephrotic syndrome).
-
Hypertension: Used alone or in combination with other antihypertensive agents to lower high blood pressure.
-
Acute Conditions: Management of fluid excretion in acute renal failure or pulmonary edema.
Dosage
Dosage must be individualized based on patient response. Standard guidelines include:
-
For Edema: The usual initial dose for adults is 20 mg to 80 mg as a single dose. This may be increased by 20 mg–40 mg every 6 to 8 hours until the desired effect is achieved.
-
For Hypertension: The common starting dose is 80 mg daily, usually divided into 40 mg twice a day (e.g., at 8 am and 2 pm).
-
Timing: It is strongly recommended to take Lasix in the morning to avoid frequent nighttime urination (nocturia).
Common Side Effects
While life-saving, Lasix can cause several side effects:
-
Dizziness or lightheadedness (due to low blood pressure)
-
Dehydration and increased thirst
-
Headache and blurred vision
-
Muscle cramps or weakness (often due to potassium loss)
-
Electrolyte imbalance (low potassium, sodium, or magnesium)
2026 Safety Update: Clinical reviews by the Mayo Clinic warn that excessive diuresis can lead to circulatory collapse, particularly in elderly patients. It is also associated with ototoxicity (hearing loss or ringing in ears) if administered in very high doses or combined with certain antibiotics.
Important Warnings & Precautions
-
Electrolyte Monitoring: Regular blood tests are necessary to monitor potassium and kidney function.
-
Anuria: Do not use Lasix if you are unable to pass urine (anuria).
-
Sulfa Allergy: Patients allergic to sulfonamides may also be allergic to Furosemide.
-
Gout: Use with caution as Lasix can increase uric acid levels, potentially triggering gout attacks.
Lasix 40 vs. Fusid Plus: Key Differences and Usage
Lasix is a single-ingredient diuretic, whereas “Plus” versions often combine Furosemide with a potassium-sparing diuretic (like Spironolactone) to prevent the common side effect of potassium loss.
| Feature | Lasix 40 (Furosemide) | Fusid Plus (Furosemide + Spironolactone) |
| Drug Class | Loop Diuretic | Combined Loop & Potassium-Sparing Diuretic |
| Primary Use | Rapid Fluid Removal | Fluid removal while maintaining potassium |
| Potassium Risk | High risk of Low Potassium | Lower risk of Potassium loss |
| Action | Strong and fast | Moderate and balanced |
| Unit Price | ৳1.00 | ৳8.00 – ৳10.00 |
Lasix 40 Price in Bangladesh (January 2026 Update)
The following table provides the current retail prices for Lasix 40 mg.
| Product Name | Strength | Unit Price (BDT) | Strip Price (10 Tablets) |
| Lasix 40 | 40 mg | ৳1.00 | ৳10.00 |
| Lasix Injection | 20 mg/2 ml | ৳9.00 | ৳45.00 (5 Ampoules) |
Lasix 40 Alternative Brands & Prices
The following are the top 10 alternative brands for Furosemide 40 mg in Bangladesh as of January 2026:
| Brand Name | Company Name | Price per Unit (BDT) |
| Fusid 40 | Square Pharmaceuticals | ৳1.00 |
| Frusin 40 | Opsonin Pharma | ৳1.00 |
| Wataris 40 | Incepta Pharmaceuticals | ৳1.00 |
| G-Furosemide 40 | Gonoshasthaya Pharma | ৳0.80 |
| Trofurit 40 | Ambee Pharmaceuticals | ৳0.53 |
| Frudema 40 | Pacific Pharmaceuticals | ৳0.53 |
| Uteric 40 | Orion Pharma | ৳0.50 |
| Furo 40 | Delta Pharma | ৳0.80 |
| Diretic 40 | Drug International | ৳1.00 |
| Edemide 40 | ACME Laboratories | ৳1.00 |
Frequently Asked Questions (FAQ) About Lasix 40
Q: What is the Lasix 40 mg price in Bangladesh?
As of January 2026, the retail price for Lasix 40 is ৳1.00 per tablet (৳10 per strip of 10).
Q: What is Lasix 40 used for?
It is used to treat edema (swelling) caused by heart, liver, or kidney disease and to manage high blood pressure.
Q: What are the Lasix 40 side effects?
Common side effects include dizziness, dehydration, low potassium levels, and increased thirst. Serious cases can lead to hearing loss if not monitored.
Q: Is Lasix 40 safe during pregnancy?
Lasix is generally not recommended during pregnancy unless the benefits significantly outweigh the risks to the fetus. It should only be used if clearly prescribed by a specialist. More information can be found on the NHS Pregnancy Guide.
Q: What is the recommended Lasix 40 dose?
For adults with edema, the initial dose is typically 20–80 mg once daily. For hypertension, 40 mg twice daily is common.
Q: Does Lasix 40 make you urinate frequently?
Yes, as a diuretic, it will significantly increase the frequency and volume of urination, usually starting within an hour of intake.
Q: Is Lasix 40 safe for kidneys?
While it treats kidney-related swelling, high doses can cause dehydration which may strain the kidneys. Doctors often monitor kidney function (Creatinine) during treatment.
Q: Can I take Lasix 40 with food?
Yes, it can be taken with or without food. Taking it with a meal can help reduce stomach upset.
Q: Are there alternatives to Lasix 40 in Bangladesh?
Yes, widely available alternatives include Fusid 40, Frusin 40, and Wataris 40, all priced similarly at ৳1.00 per tablet.
Disclaimer: This is educational information only (updated January 2026). Not a substitute for professional medical advice. Always consult a qualified physician before starting/stopping any medication.
