Lasix is the brand name for the medication furosemide. It is a diuretic, commonly known as a "water pill," that helps increase urine production and remove excess water and salt from the body. Medicine is primarily used to treat conditions such as edema (fluid retention) and hypertension (high blood pressure).

Drug Name: Lasix

Active Ingredient: Furosemide

Lasix tablets



Form: Tablet

Type: Generic

Prescription Required: Rx

Availability: In Stock

Here are some key points about Lasix:

  1. Mechanism of Action: Medicine works by inhibiting the reabsorption of sodium and chloride in the kidneys, leading to increased urine output. This helps reduce fluid buildup in the body and can help lower blood pressure.
  2. Uses: Lasix is commonly prescribed to treat conditions characterized by excess fluid accumulation, including edema associated with heart failure, liver disease, or kidney disease. It is also used to manage hypertension and may be used in certain cases of hypercalcemia (high blood calcium levels).
  3. Administration: Drug is usually taken orally as tablets or liquid, and it is typically recommended to take it in the morning to avoid nighttime urination. It can be taken with or without food, but consistency in taking it with or without food is recommended.
  4. Monitoring: You may monitor your blood pressure, electrolyte levels (such as potassium, sodium, and magnesium), and kidney function regularly while you are taking Lasix. This helps ensure the medication is working effectively and helps identify any potential side effects or imbalances.
  5. Interactions and Precautions: Furosemide may interact with other medications, supplements, and herbal products. It is also crucial to disclose any medical conditions you have, such as kidney problems, liver disease, or diabetes, as these can affect the use of Lasix.

How to use

Here are some general guidelines on how to use Lasix:

  1. Oral Administration: Medicine is usually taken orally in the form of tablets or liquid. Swallow the tablet with a glass of water without crushing or chewing it. If you are using the liquid form, measure the dose using a special measuring device or an oral syringe provided by your pharmacist.
  2. Timing: Lasix is typically taken once or twice a day. It is often recommended to take it in the morning to avoid nighttime urination.
  3. Food and Fluids: Furosemide can be taken with or without food. However, it is generally recommended to maintain a consistent routine regarding food and fluid intake while taking Lasix.


Here are some general guidelines regarding the dosage of Lasix:

  1. Edema (Fluid Retention): For treating edema, the initial recommended dose of Lasix for adults is usually 20-80 mg taken orally once or twice a day.
  2. Hypertension (High Blood Pressure): When using Lasix to manage hypertension, the initial recommended dose for adults is typically 40 mg taken orally once daily. Higher doses or additional antihypertensive medications may be needed to achieve the desired blood pressure control.
  3. Pediatric Dosage: The dosage for children will be determined by your pediatrician based on the child's weight, medical condition, and response to the medication. Pediatric dosages are typically lower than adult dosages and may be given as a single dose or divided into multiple doses throughout the day.

Side effects

Lasix may cause side effects in some individuals. It is important to be aware of these potential side effects while taking the medication. While not everyone will experience side effects, here are some common ones:

  1. Increased Urination: Medicine is a diuretic that increases urine production. As a result, you may experience more frequent urination.
  2. Dehydration: Excessive fluid loss due to increased urine production can lead to dehydration. It is important to maintain adequate fluid intake while taking Lasix, especially in hot weather or during physical activity.
  3. Electrolyte Imbalances: Drug can cause imbalances in electrolytes such as potassium, sodium, magnesium, and calcium. This can lead to symptoms such as muscle weakness or cramps, irregular heartbeat, fatigue, and dizziness.
  4. Low Blood Pressure: Furosemide can lower blood pressure, which may cause symptoms like dizziness, lightheadedness, or fainting.
  5. Ototoxicity: In rare cases, Lasix can cause damage to the inner ear, leading to hearing loss or ringing in the ears (tinnitus).
  6. Allergic Reactions: Although uncommon, some individuals may develop allergic reactions to Lasix. Signs of an allergic reaction include rash, itching, swelling (particularly of the face, lips, or throat), severe dizziness, or difficulty breathing. Seek immediate medical attention if you experience these symptoms.
  7. Other Side Effects: Additional side effects that may occur include nausea, vomiting, diarrhea, constipation, headache, blurred vision, and sensitivity to sunlight.


To properly store Lasix, follow these guidelines:

  1. Keep in a Cool, Dry Place: Store tablets at room temperature, away from excessive heat, moisture, and direct sunlight.
  2. Avoid Bathroom Storage: Do not store Lasix in the bathroom or other areas with high humidity. The humidity and temperature fluctuations in these areas can degrade the medication.
  3. Keep Out of Reach of Children and Pets: Store Lasix in a secure location, out of the reach of children and pets. Consider using child-proof containers or cabinets to prevent accidental ingestion.
  4. Original Packaging: Keep tablets in its original packaging, including the blister pack or bottle provided by the pharmacy. This packaging helps protect the medication from light, moisture, and contaminants.
  5. Follow Specific Instructions: If there are any specific storage instructions on the medication packaging, follow them accordingly. Some medications may have specific storage requirements, such as refrigeration, and it is important to adhere to those instructions.
  6. Dispose of Expired Medication: Check the expiration date on the Lasix packaging and discard any expired medication. Expired medications may not be effective and should not be used.


An overdose of Furosemide can be potentially serious and requires immediate medical attention. If you suspect an overdose or have taken more Lasix than prescribed, take the following steps:

  1. Contact Emergency Services: Call your local emergency number or go to the nearest emergency room immediately. Inform them that you have taken an overdose of Lasix.
  2. Do Not Induce Vomiting: Do not attempt to induce vomiting unless specifically instructed to do so by medical professionals.
  3. Medical Evaluation and Treatment: Treatment may involve measures to remove the medication from your body, such as inducing vomiting or using activated charcoal. Intravenous fluids may be given to maintain hydration and support kidney function. Other treatments will be administered based on your specific symptoms and needs.

It is important to seek immediate medical help in the event of a Lasix overdose. Never ignore or downplay the seriousness of an overdose, as it can have potentially life-threatening consequences.

Missed Doses

If you miss a dose of Lasix, take it as soon as you remember. However, if it is close to the time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not double the dose to make up for a missed one.

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