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Lasix is administered in persons suffering edema resulting from a cardiac, renal, or hepatic condition. It is also administered in adults as combination therapy or single dosage for high blood pressure. It rules out the emergence of cardiac conditions, including stroke. This medication increases the production of urine during treatment because it’s a diuretic.

Dosage & Administration

Before commencing treatment with Lasix, read the drug information guide. If anything seems unclear, consult a specialist. The dose may be adjusted, depending on the patient’s response to therapy. Don’t consume more than the prescribed dose.


Edema treatment in adults requires an initial dosage between 20 to 80 mg of Furosemide. After six to eight hours, the dose could be repeated or adjusted by 20 or 40 mg.

If the edema subsides, the doctor can administer Furosemide as a double dose. For instance, a 20 mg dose can be divided into 10 mg in the morning and the other at noon.

Avoid ingesting Lasix at night to prevent waking up at intervals to urinate. Not getting enough sleep may lead to hypertension.

Furosemide is prescribed according to weight in children. The starting dosage is 2 mg/ kg. The doctor may change it to three or four mg/ kg if the expected result isn’t achieved within eight hours. Children should never ingest more than six mg.

It may not be safe for elderly persons to consume Lasix. Hence, a consultant must administer the medicine with caution.


Adults can consume 40 mg twice daily. The physician may increase the dosage or add another antihypertensive, depending on your response to the therapy. The physician must apply caution when combining Furosemide with another medication to prevent hypotension.

Treatment in elderly people should begin with a very low dosage and frequent monitoring for any side effects.


  • Inform a physician about all allergies you’ve experienced or when you notice a drop in urine level.
  • If you have experienced these medical conditions, inform a physician:
    • High blood sugar
    • Gout
    • Lupus
    • Thyroid issues
    • Low potassium
    • High dietary fat
    • Renal and hepatic diseases
  • Avoid direct exposure to sunlight when ingesting Lasix because it could result in sunburn.
  • Limit alcohol intake, and inform the physician if you’re consuming cannabis.
  • Avoid engaging in activities that require alertness while on Lasix therapy.
  • Avoid getting up too quickly when ingesting Lasix to avoid dizziness.
  • Lasix may trigger dehydration. Ensure you consume more fluid daily.
  • Lasix shouldn’t be administered in pregnancy unless the risks are minimal.
  • Traces of Lasix could be found in breastmilk. Lactating women must consult a specialist before ingesting the medicine.
  • Furosemide may decrease breast milk production. Affected persons should consume more water or seek alternative feeding methods for their babies.
  • This medication must be ingested at a specific time every day. It will prevent the occurrence of missing dosage.
  • If consuming Lasix for high blood pressure, don’t discontinue therapy without a physician’s approval.
  • If the symptoms become worse, inform a specialist immediately.
  • Lifestyle changes like stress reduction, exercising, and proper diet could enhance Furosemide efficacy.

Side Effects

This medicine may trigger allergies such as:

  • Rashes
  • Difficulty in breathing
  • Fever
  • Eye inflammation
  • Swollen face
  • Difficulty in swallowing

The following side effects are common:

  • Dizziness
  • Diarrhea
  • Headaches
  • Blurry vision

Lasix may cause serious side effects such as:

  • High blood sugar
  • No appetite
  • Fatigue
  • Breathlessness
  • Inability to urinate
  • Hearing impairment
  • Irregular heartbeat
  • Tinnitus
  • Abdominal pain
  • Jaundice
  • Urine incontinence
  • Numbness

Missed Doses

Usually, physicians administer Lasix in single doses, which makes it difficult to miss. But if consuming it two times daily, consume a missed dosage immediately after you remember it. However, if the time for your next dosage is approaching, skip it.


If someone consumes an overdose of Lasix, call for help immediately. Lasix overdose symptoms include:

  • Difficulty in breathing
  • Passing out
  • Dehydration
  • Hypotension
  • Electrolyte imbalance

A physician will treat these symptoms by replacing the lost electrolytes. Patients suffering from urinary obstruction should be adequately drained. A specialist should also request laboratory tests like serum electrolyte. Also, the patient’s blood pressure readings should be tabulated frequently.

Drug Interaction

The following drugs will interact with Furosemide:

  • Salicylates
  • Phenytoin
  • Nephrotoxic drugs e.g., Cisplatin
  • Lithium
  • Aminoglycoside antibiotics
  • Angiotensin receptor blockers
  • Norepinephrine
  • Sucralfate
  • Chloral hydrate
  • Methotrexate
  • Ethacrynic acid
  • Cyclosporine
  • Indomethacin

Lasix might interfere with thyroid tests. Therefore, inform a physician about what you’re consuming before undergoing therapy or surgery. This article doesn’t reflect a comprehensive list of medications that could interact with Lasix.

However, supplements and other products may alter its functions. A physician would either decrease the dosage of other medicines or space them adequately to prevent the development of side effects.