Lasix Tablet: Uses, Dosage & Side Effects in Pakistan

Lasix Tablet Uses, Dosage, Side Effects & Price in Pakistan

1. Quick Info (Mukhtasir Maloomat)

2. What is Lasix Tablet? (Lasix kya hai)

Lasix Tablet is a powerful diuretic used in Pakistan for oedema (swelling) caused by heart failure, liver disease, and kidney disease. It belongs to the Loop Diuretic class. Furosemide blocks the sodium/potassium/2Cl- cotransporter in the thick ascending portion of the loop of Henle in the kidney — this prevents the kidney from reabsorbing salt and water, resulting in powerful diuresis. Effect begins 30-60 minutes after the oral tablet.

3. Uses (Fayde / Kis kaam aati hai)

• Oedema (sojan) due to heart failure, hepatic cirrhosis, or renal disease
• Hypertension (high blood pressure) — adjunct therapy
• Acute pulmonary oedema (emergency — IV form used in hospital setting)
• Hypercalcaemia (raised calcium levels)

4. Who Should Take (Kis ko leni chahiye)

• Patients with oedema due to heart failure, liver cirrhosis, or kidney disease
• Patients with hypertension where other diuretics are insufficient
• Patients with acute pulmonary oedema (hospital setting, IV use)
• Patients with hypercalcaemia under specialist care

5. When NOT to Take (Kab nahi leni chahiye)

• If you are allergic to furosemide or sulfonamides (cross-allergy possible)
• If you are severely dehydrated or have very low blood pressure
• In anuria (no urine output) — kidneys not functioning
• Without regular potassium and electrolyte monitoring

6. Dosage (Kitni leni hai)

• As prescribed — dose depends on indication and severity

• Varies widely — oedema management to acute pulmonary oedema differ significantly

• Do not exceed the recommended limit

• If you miss a dose, take it as soon as you remember. If the next dose is close, skip the missed dose. Never take a double dose.

7. How to Take (Kaise leni hai)

• Morning is preferred — diuresis occurs during the day and sleep is not disturbed at night

• Take at the same time every day

• Can be taken with or without food — both are acceptable

• Rise slowly after taking the medicine — blood pressure may drop

8. Best Time (Kab leni chahiye)

• Morning is essential so that frequent urination at night does not disrupt sleep

• Maintain a regular routine

9. Empty Stomach or After Food (Khali pait ya khane ke baad)

Lasix Tablet can be taken on an empty stomach or after food. If the stomach is sensitive, taking it after food is better.

10. Warnings (Ihtiyat)

• Don't use Lasix if you are allergic to furosemide or sulfonamides
• Avoid in severe dehydration or anuria

• Monitor potassium levels — hypokalemia can cause cardiac arrhythmia, especially with digoxin (CRITICAL)
• Blood pressure monitoring is essential — blood pressure may drop significantly
• Ototoxicity risk with high IV doses or rapid infusion — lower risk with oral use

11. Precautions (Ahm ehtiyaat)

• Store in a cool, dry place — below 30°C
• Keep away from direct sunlight
• Keep out of the reach of children

• Diabetes: Furosemide can raise blood glucose — antidiabetic dose adjustment may be necessary
• Gout: Furosemide can raise uric acid levels
• Elderly: Higher risk of volume depletion and falls — titrate dose carefully

12. Side Effects (Nuksanat)

• Frequent urination (diuresis), dizziness on standing, electrolyte disturbances (hypokalemia, hyponatraemia, hypocalcaemia), muscle cramps, dehydration

• Severe hypokalemia — cardiac arrhythmia (especially with digoxin)
• Ototoxicity — hearing loss or tinnitus (rare, high IV doses)
• Severe dehydration and volume depletion
• Metabolic alkalosis

13. Drug Interactions (Dawaon ke sath reaction)

• Digoxin — CRITICAL: furosemide lowers potassium, which can raise digoxin toxicity to a serious level — always monitor potassium levels when both are prescribed together
• NSAIDs (such as ibuprofen, diclofenac) — reduce Lasix's diuretic effect
• ACE inhibitors / ARBs — additive blood pressure reduction — blood pressure may drop significantly
• Aminoglycosides (such as gentamicin) — increased risk of ototoxicity and nephrotoxicity
• Lithium — furosemide reduces renal clearance of lithium — lithium toxicity risk
• Antidiabetics — furosemide can raise blood glucose, reducing the effectiveness of antidiabetics

14. When to See Doctor (Kab doctor ke paas jayein)

• Muscle cramps and extreme weakness (severe hypokalemia)
• Irregular heartbeat or chest palpitations (electrolyte disturbance — especially if on digoxin)
• Severe dizziness on standing or fainting
• Tinnitus (ringing in ears) or sudden hearing changes (ototoxicity)
• Dramatically reduced urine output (possible volume depletion)
• Signs of severe dehydration — dry mouth, extreme thirst, no urination

15. Alternatives (Sasti Dusri Dawaein)

16. Price in Pakistan (Price kitni hai)

17. FAQs (Aksar poochay jane walay sawalat)

Q: Lasix kis kaam aata hai?

A: Lasix (Furosemide) is used for oedema (swelling) caused by heart failure, liver disease, or kidney disease. It should be taken after a doctor's prescription.

Q: Lasix ke side effects kya hain?

A: Common side effects include frequent urination, dizziness, and low potassium. When taken with digoxin, pay special attention to potassium levels.

Q: Lasix kitni der kaam karta hai?

A: Diuresis begins 30-60 minutes after the oral tablet and lasts 6-8 hours.

Q: Lasix ki Pakistan mein price kya hai?

A: The price depends on the pharmacy and pack size. Verify the current rate at a local store or online listing.

Q: Lasix se potassium kyun kam hota hai?

A: Furosemide causes the kidneys to excrete both sodium and potassium along with water. Potassium supplementation or potassium-rich foods (banana, dates) are therefore necessary as directed by the doctor.

18. Medical Review (Medical jaiza)

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: 2026-06-17

19. Disclaimer (Zaroori tanbeeh)

The information on this page is for awareness only. It is not medical advice. Always consult your doctor or pharmacist before taking any medicine. PakVita is not responsible for any harm.