Lasix – Top Level Diuretic – A Review

Water retention. If you have been working out for a while, then you probably know already that this condition is no joke. It is painful, embarrassing and very annoying. Lasix is one of the many drugs in the market today that is used to treat this condition. And a very popular one at that too! So we are going to explore the credibility of this drug and assess its efficacy, results and side effects and so much more. But first things first, let’s start with the name. You should know that Lasix is the brand name for the drug furosemide. However, it can be found both in brand and generic forms. The molecular formula for furosemide can be expressed as C12H10ClN2O5S or C12H11ClN2O5S. Essential, this drug is what we called a diuretic. It is derived from sulfamoylanthranilic acid which is also known as frusemide. What does it do? Well, furosemide or Lasix is popularly and very widely used to treat edema (water retention in the body) and hypertension.

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Lasix is a product of sanofi-aventis U.S. LLC. sanofi-aventis U.S. LLC is a healthcare company that works toward in discovering, developing, producing, and marketing therapeutic solutions focused on patients’ needs in the USA. It specializes in healthcare solutions and treatments for cardiovascular diseases, oncology, sleep disorder, thrombosis, allergy and respiratory illness, diabetes, central nervous system, internal medicine, metabolic disorders, osteoporosis, and hypertension. They have a wide range of treatments based on prescription products, vaccines, biologics and much more. Founded in 1999, sanofi-aventis U.S. LLC is based in Bridgewater, New Jersey and operates as a subsidiary for sanofi. However, the most important thing is that the company has an excellent record and is very well-trusted by consumers. And in the world of pharmaceuticals, that means A LOT!

What will you learn from here?

The basics have been presented and covered, but we know that not what you are here for. Our article today is put together with you in mind. We will cover everything you need to know about Lasix and all the package it comes with. If you are a smart consumer, then read through all that we offer about this drug so that that you know what you are getting into. Awareness, alone, is half the treatment done. Here’s what on the menu today:

  • History and Discovery
  • What does it do for you?
  • Mode of action
  • How to use it
  • Expected effects
  • Side effects
  • Interactions

History and Discovery

The use of furosemide has been around for quite some time. And pin pointing its exact date of discovery and formulation is tough job. However, the compound was developed in the early 60s, say 1962, as a treatment for water retention and hypertension for patients suffering from heart, liver and kidneys diseases. Fast forward, the FDA approved the drug for consumer use in July, 1982. Not too late after that, came Lasix from sanofi-aventis U.S. LLC as a brand from furosemide. Which is now manufactured by many manufacturers all over the world. Pretty smooth and straightforward for a drug that is so fundamental to millions of people all around the world, right? Now, let’s dive into one of the most important piece of information on our article which explores the functions of Lasix.

What does it do for you?

Alrighty then! Let’s get to the meatier parts. We have yapped enough about a bit of this and a bit of that. But not enough on what the drug actually does for you. So! What does it do? What’s it for? Who’s this for? Well, to start off, Lasix is a diuretic drug containing furosemide. Such drugs are also known as water pills for very fitting reasons.

  • Lasix is mainly used to treat edema.

What’s edema you ask? Edema is the condition of water retention and fluid buildup in tissues or cavities of the body. Edema has multiple causes like kidney or liver issues. But it is also something that is very commonly experienced by bodybuilders or athletes after a series of physically vigorous activities. But that’s not it.

  • Lasix is also a very popular treatment for hypertension or high blood pressure.

Lasix can be taken by both males and females. Mind you, it isn’t an over the counter sort of thing that you can chow down with a glass of orange juice. It is a serious drug that could have serious complications if you are not careful and conscious (We’ll cover that in a second shortly).

How does it work its magic?

With such great functions and powers, one must also know how it does what it does… . .So what exactly happens when you use Lasix? Well, to understand this, we will carefully unravel this drug’s mode of action. When you take Lasix, it should start to do its job within the next 5 minutes or an hour depending on the formula. What Lasix does, essentially, is discard the excess water and salt from your body. Your kidney is a natural filter which filters out salt, water and other small molecules from the blood stream. The byproduct? Urine! However. Most of these salts and waters is reabsorbed by your blood before it could become urine and get discharged from the body. This is where Lasix comes to play!

Lasix function is to the block the reabsorption of the water and salts back into the body! As a result, you will find yourself running to the loo more than often and more than you prefer. That’s your body, on Lasix, flushing out the excess water and salts! It’s not called “water pill” for nothing, eh? The reduction in pressure on the arteries from the decreased fluid circulation eventually reduces your blood pressure as well!



The first thing you need to know about Lasix is that it can be taken orally or intravenously. The tablets come in 20, 40 and 80 mg. You also have an oral solution which come in 8 mg per ml (or 40 mg per 5 ml) and 10 mg per ml. The IV solution comes in 10 mg per ml.


Dosage of Lasix will vary from purpose. Dosage for treating edema is different from the dosage of treating hypertension. It will also vary from age, gender, and other factors like pregnancy, medical conditions, etc. It is very important that your consult with your doctor before starting to take Lasix. Here’s a general guideline:

Dosage for hypertension

Age 18 to 64

  • The recommended starting dose of Lasix among people from the age group of 18 to 64 is 20 to 80 mg per day, twice a day.

Dosage for Edema

Age 18 to 64

  • The starting dose for treating edema is from 20 mg to 120 mg per day. However, you will only take it once per day.

When to take it?

The best time to take Lasix is in the morning when you have plenty of time and energy to be running to the loo whenever needed. What’s neat is that you can take it whenever you like. You don’t have to take it at the same time every day. We recommend that you take it at lunch time and avoid taking it anywhere near bedtime. Taking Lasix close to bedtime will have you running to the bathroom at odd hours.

Just for your information, tablet form of this drugs start doing its job within an hours or so. As for the IV form, it starts doing its thing in as fast as 5 minutes!



One thing that’s really great about Lasix is that they are very acceptable to stacking. This allows you to amp up the results. The most common complementary drugs taken with Lasix is Potassium. It is also taken in conjunction with other diuretics like amiloride, triamterene, and spironolactone.


What are some of the expected effects of Lasix?

Lasix is what Lasix does. It is a diuretic drug which means it will flush out water and salts from your system. It is very therefore common to experience:

  • Frequent urination
  • Overall lightness
  • Thirstiness

Keep in mind, that all these effects are normal and there to counteract the excessiveness of the respective effects.

  • You can expect your body pressure to go down
  • As well as, your fluid retention to shrink through frequent urinating.

How does it compare?

Lasix is just one of the many furosemide drug available in the market today. However, there is no doubt that this brand name is a consumer’s choice over many other diuretic. It comes in many forms, is very inexpensive end is very effective too.

We particular like that it comes in tablets, oral solution and IV solution in various dosage sizes. Makes using it so much more convenient and efficient.


Side effects

Lasix is just like any other drug. It is tailored to help and serve, but it comes with its own problems and side effects. Some of the most common side effects of using Lasix include:

  • Dehydration
  • Low blood pressure
  • Dry mouth
  • Headaches
  • Dizziness
  • Muscle cramps

Some serious side effects include:

  • Diarrhea
  • Rash
  • Pancreatitis
  • photophobia

However, most of these side effects are associated with overdosing or taking the incorrect dose. It is also very important that your check with your doctor regarding any allergic reaction to this drug.


Lasix, which filters out salts, can interact with other medicines which contain salt. This includes:

  • Paracetamol
  • Co-codamol
  • Gavison

Lasix also interacts with:

  • Aspirin
  • Other diuretics
  • Sucralfate
  • Drugs that manipulate levels of potassium

Once again, it is very important to consult with your physician prior to starting Lasix. Do NOT forget to inform them about your current (if any) treatment and medicines.


Swelling up like a water balloon and driving your blood pressure through the roof is very common for us in today’s day and age. It is especially frequent among bodybuilders or people who rely on heavy physical training. For them, a furosemide drug like Lasix is no less than a godsend. We will admit, this product is nowhere near perfect. Gosh no! It has quite a few side effects that show up in many users. There are quite a few restrictions and whatnot too. Whatever it is, there is always room for improvement, and Lasix has a long way to go. Having said that, the drug does what it says it will do! It serves the purpose and is effective most of the times.

Our look into all the in and outs and do’s and don’ts of Lasix should give you a clear idea of the drug, its benefits, its complications and limitations. Don’t forget to talk to your doctor about Lasix before using it. It’s so much better, faster and cheaper if you are a little careful and conscious about drugs like these! Take care.



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