Active Ingredient

Furosemide (Frusemide)

Furosemide (Frusemide) is a medication that helps remove excess fluid from the body. It is often used in conditions where fluid retention is a problem.

This medication is commonly prescribed to manage symptoms related to heart, liver, or kidney conditions.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Furosemide (Frusemide) Brands

Lasix

Strengths 40mg, 100mg

Furosemide (Frusemide) Uses

Furosemide (Frusemide) is typically used to treat conditions that cause fluid buildup in the body.

Edema associated with congestive heart failure
Edema due to liver disease
Kidney disorders causing fluid retention
High blood pressure management
Swelling caused by certain medications

How Furosemide (Frusemide) Works

Furosemide (Frusemide) works by acting on the kidneys to increase the amount of urine produced. This helps to remove excess fluid and reduce swelling.

It belongs to a class of medications known as loop diuretics, which target specific parts of the kidneys to enhance fluid removal.

By reducing fluid in the body, it can also help lower blood pressure.

Common side effects of Furosemide (Frusemide)

Not everyone experiences side effects with Furosemide (Frusemide), and many are mild and temporary.

Dizziness
Dehydration
Electrolyte imbalance
Increased urination
Headache
Stomach upset
Muscle cramps

If side effects persist or become bothersome, consult a healthcare professional.

Monitor your weight regularly to track fluid changes.
Avoid alcohol as it can increase dizziness and dehydration.
Maintain a balanced diet to prevent electrolyte imbalances.
Do not use this medication if you experience severe dehydration or kidney problems.
Let your doctor know about all other medications you are taking to avoid interactions.

Always consult your doctor for personal medical advice and before making any changes to your medication regimen.

Frequently Asked Questions

How quickly does Furosemide (Frusemide) work?

Furosemide (Frusemide) typically begins to work within an hour of taking it, but this can vary among individuals.

How long do the effects of Furosemide (Frusemide) last?

The effects of Furosemide (Frusemide) can last for several hours, helping to remove excess fluid from the body.

Can I take Furosemide (Frusemide) with other medications?

It’s important to inform your doctor about all medications you are taking, as Furosemide (Frusemide) can interact with other drugs.

Is Furosemide (Frusemide) safe for long-term use?

Long-term use of Furosemide (Frusemide) should be monitored by a healthcare professional to avoid potential side effects and complications.

What should I do if I miss a dose of Furosemide (Frusemide)?

If you miss a dose, take it as soon as you remember unless it is almost time for your next dose. Do not double up doses.