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Lasipen 40mg (Furosemide)

Qty Price per Unit Price
Lasipen 40mg (furosemide) x 60 $0.60 $36.00
Lasipen 40mg (furosemide) x 90 $0.50 $45.00
Lasipen 40mg (furosemide) x 180 $0.40 $72.00
Lasipen 40mg (furosemide) x 360 $0.30 $108.00


Product Information


Diuretics are medications designed to increase the volume of urine by stimulating the excretion of salt and water from the kidneys. These types of medications are sometimes called “water pills”.


Lasipen contains 40mg of the loop diuretic Furosemide as its active ingredient. Being a loop diuretic, it inhibits the reabsorption of water by blocking the co-transporter of sodium, potassium and chloride in the ascending limb of the loop of Henle inside the kidneys. This drug helps the body rid of extra salt and water which makes it one of the prescribed medication for the treatment of fluid retention or edema. Fluid retention may be caused by a number of medical conditions such as heart failure, kidney diseases or liver diseases. The drug will lessen symptoms like shortness of breath and swelling of arms, legs, and abdomen. Furosemide is also prescribed for the treatment of hypertension which will then reduce the risk of stroke, heart attack and other kidney problems.


This drug may also be prescribed by a healthcare professional for other medical conditions not mentioned above.




Lasipen 40 is manufactured by Morepen




Each patient varies in medication doses for it will depend greatly on one’s medical condition, age, weight and even on the response to the treatment. This medication must be taken only as directed by a physician.


A Lasipen tablet is taken orally, with or without food, usually once or twice daily. The recommended initial adult dose of Furosemide tablets is 20mg to 80mg and the maintenance dose is 20mg to 40mg every 6 to 8 hours. It is important not to exceed the 600mg maximum daily dose of Furosemide. A dose must never be doubled just to make up for a missed dose.


This tablet must be taken regularly to get utmost benefit from the drug. If this drug is taken for the treatment of high blood pressure, it must be taken continuously even if one feels fine as high blood pressure do not usually present any symptoms. Blood pressure medications may need to be used for the rest of one’s life.


The prescribed dose must not be changed without the advice of a healthcare professional and must strictly be followed to prevent the risk of irreversible hearing loss from high doses of Furosemide. Avoid taking the medication within 4 hours of bedtime so as not to get up in the middle of the night to urinate.


Furosemide will increase the amount of urine, making a patient get easily dehydrated. Furosemide may also reduce the levels of potassium in the blood. So, a physician may instruct taking of potassium supplements and intake of enough salt and potassium-rich foods in a diet. 




Patients with known hypersensitivity to the active ingredient Furosemide and all the inactive ingredients of the tablet must not use this medication. This drug is also contraindicated to patients who are unable to urinate.


Side Effects


Stop the medication and seek urgent medical help if an allergic reaction to the drug occurs. Symptoms include hives, difficulty in breathing, or swelling of lip, face, tongue and throat.


As the body adjusts to the medication, a patient may experience these common side effects that will usually subside overtime:

  • Headache
  • Dizziness
  • Lightheadedness
  • Blurred vision

To prevent from getting dizzy or lightheaded, one must slowly rise from a sitting or lying position.


This medication may also cause serious dehydration. Symptoms of electrolyte imbalance may be observed. Notify a physician if any of the serious side effects are experienced:

  • Muscle cramps
  • Weakness
  • Unusual tiredness
  • Unusual dry mouth or thirst
  • Nausea
  • Vomiting
  • Fast or irregular heartbeat
  • Severe dizziness
  • Mood changes


More serious side effects are listed below. Call a physician right away for any of these side effects: 

  • Ringing in the ears or hearing loss
  • Confusion
  • Drowsiness
  • Memory or speech problems
  • Jaundice (yellowing of skin or eyes, dark urine)
  • Sudden weakness, fever, chills
  • Pale skin, bruising or bleeding
  • Nausea, vomiting, appetite loss, sweet or musty breath odor
  • Severe pain in the upper stomach radiating to the back
  • Symptoms of kidney problems such as little or no urination, painful or difficult urination, swollen feet or ankles, feeling of tiredness or shortness of breath


Side effects from Lasipen are not limited to the list above. Consult a healthcare provider for more information on Lasipen side effects.


Warnings and Precautions


It is important to know if a medication is safe to take because it may interact with other medications or can cause further damage to other medical conditions. A physician must be consulted and informed of the following medical conditions prior to taking Lasipen in order to determine the safety in using the medication:

  • Gout
  • Lupus
  • Kidney disease
  • Diabetes – Furosemide may affect blood sugar level
  • Liver disease
  • High cholesterol
  • Electrolyte imbalance
  • Enlarged prostate
  • Bladder obstruction or other problems with urination
  • Sulfa drug allergy


Sun exposure for long periods, tanning booths and sunlamps must be avoided because Lasipen may cause increased sensitivity to sun. The use of sunscreen and protective clothing is recommended when going outdoors.


It is unknown whether Lasipen harms unborn babies, but is known to be passed onto breast milk and may slow down breast milk production. This medication may be used by pregnant and lactating women only as prescribed by a physician, after weighing the benefits over the risks.


Lasipen may also interact with other medications, causing serious side effects or change in how medications work. Ototoxic effects may be increased if Furosemide is taken concomitantly with aminoglycoside antibiotics, ethacrynic acid and cisplatin. Aside from these, Furosemide also interacts with the following medications:

  • Salicylates - salicylate toxicity if used with Furosemide
  • Tubocurarine – Furosemide can antagonize the skeletal muscle effect of this drug
  • Succinylcholine – Furosemide may potentiate the action of this drug
  • Lithium – increased risk of lithium toxicity if combined with diuretics
  • ACE inhibitors – may cause severe hypotension if combined with Furosemide. Dose adjustment may be necessary
  • Phenytoin – interferes with renal action of Furosemide


Increased damage to kidneys will occur if Furosemide interacts with the following medications:

  • Antivirals
  • Chemotherapy
  • Bowel disorder medications
  • Medications that prevent organ transplant rejection
  • Osteoporosis and antibiotic injectable medications
  • Other pain and arthritis medications


Sucralfate must be taken at least 2 hours before or after taking Furosemide because simultaneous use can reduce the hypotensive and diuretic effect of Furosemide.


Concomitant use of Lasipen and chloral hydrate is not recommended as it may lead to flushing, sweating attacks, restlessness, nausea, increased blood pressure and tachycardia.


Consult a healthcare professional for more information on Lasipen drug interactions.


Lasipen and Alcohol


Alcohol in combination with Furosemide (Lasipen) may cause side effects such as headache, dizziness, lightheadedness, fainting or changes in heart rate, due to the additive effects as both can lower blood pressure.