The Science Of Relief: Understanding The Inner Workings Of Laxatives

how a laxative works

Laxatives are a type of medicine used to treat constipation. They work by either softening stools or stimulating the bowels to get moving so you can pass them. There are four main types of laxatives: bulk-forming, osmotic, stimulant, and stool softener. Bulk-forming laxatives increase the bulk of stools by getting them to retain liquid, which encourages the bowels to push them out. Osmotic laxatives soften the stool by increasing the amount of water secreted into the bowels, making it easier to pass. Stimulant laxatives stimulate the digestive tract walls, speeding up bowel movements. Stool softener laxatives decrease the surface tension of stools so that they absorb more water, making them softer.

Characteristics Values
Definition Medicines that help treat constipation by stimulating bowel movements
Types Bulk-forming, osmotic, stool softeners, lubricants, stimulants
How they work Softening stools, stimulating bowel muscles, increasing stool bulk
Forms Tablets, capsules, liquids, gels, suppositories, enemas
Usage Take as directed to prevent side effects like bloating, gas, stomach cramps
Availability Over-the-counter, prescription
Side effects Dehydration, bloating, gas, stomach cramps, diarrhoea, intestinal obstruction

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Laxatives work by softening stools

Laxatives are a type of medicine that can help people empty their bowels when they are constipated. They are available over the counter without a prescription, but they are not suitable for everyone. For example, laxatives are not recommended for children unless advised by a doctor.

There are several types of laxatives that work in different ways to achieve this. Bulk-forming laxatives, for instance, contain soluble fibre, which draws water from the body into the stool, making it softer and easier to pass. They are considered the gentlest type of laxative and are often recommended as the first option to try. Osmotic laxatives also work by drawing water into the intestines, which softens the stool and helps it move. Stool softener laxatives are another type that works by increasing the water and fat content of the stool, making it softer. Lubricant laxatives, such as mineral oil, coat the colon, making it slick and preventing water absorption from the stool, thus keeping it soft.

It is important to take laxatives as directed to prevent side effects such as bloating, gas, and stomach cramps. They should also be used only occasionally and for short periods of time, as long-term use can cause health problems and mask underlying conditions.

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They can also increase the bulk of stools with fibre

Laxatives are a type of medicine used to treat constipation. They work by softening stools or stimulating the bowels to get moving. There are several types of laxatives, including bulk-forming laxatives, which work by increasing the bulk or weight of the stool. This is done by adding soluble fibre to the stool, which draws water from the body into the stool, making it bigger, softer, and easier to pass.

Bulk-forming laxatives are often recommended as a first-line treatment for constipation. They are generally considered the gentlest type of laxative and are the least likely to cause side effects. These laxatives typically take 12 to 72 hours to start working, and sometimes even up to a few days. They are available in various forms, including capsules, tablets, liquids, and powders that can be mixed with water.

The bulk-forming laxatives include common brands such as Fybogel (ispaghula husk), Metamucil (psyllium), FiberCon (polycarbophil), and Citrucel (methylcellulose). These products are often marketed as laxatives or fibre supplements and can be purchased over the counter in pharmacies and supermarkets.

It is important to note that laxatives should only be used occasionally and for a short period, typically up to a week. If constipation persists or occurs frequently, it is recommended to consult a healthcare professional. Additionally, individuals should carefully read the instructions and follow the recommended dosage to avoid potential side effects such as bloating, gas, and stomach cramps.

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They are available over the counter and on prescription

Laxatives are available over the counter and on prescription. They are a type of medicine used to treat constipation. They are available in pharmacies and supermarkets, and can also be prescribed by a doctor.

Laxatives are typically used when lifestyle changes, such as increasing fibre intake, drinking more fluids, and exercising, have not helped with constipation. They are not usually recommended for children unless advised by a doctor, and are not suitable for those with certain health conditions, such as Crohn's disease or ulcerative colitis.

There are four main types of laxatives: bulk-forming, osmotic, stool softener, and stimulant. Bulk-forming laxatives increase the weight of stools by drawing water from the body into the bowel, stimulating the bowel to push out the stool. Osmotic laxatives also draw water into the bowel, softening the stool and making it easier to pass. Stool softener laxatives decrease the surface tension of stools, allowing them to absorb more water and become softer. Stimulant laxatives stimulate the digestive tract walls, speeding up bowel movements.

It is important to carefully read the instructions before taking laxatives, as they can have side effects such as bloating, gas, and stomach cramps. They should only be taken occasionally and for up to a week at a time. If constipation persists or worsens after taking laxatives, it is important to speak to a healthcare professional.

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They can be taken by mouth or through the rectum

Laxatives are available in a variety of forms, including tablets, capsules, liquids, gels, and suppositories. They can be taken by mouth or administered through the rectum. When taken by mouth, laxatives come in the form of tablets, capsules, liquids, or powders that can be mixed with water. On the other hand, rectal administration involves inserting suppositories or enemas into the rectum.

Rectal administration of laxatives, such as suppositories or enemas, offers a faster route for relief. They work within minutes to an hour and are often chosen when faster relief is needed. However, it is important to note that these methods come with a higher risk of side effects, such as diarrhoea and stomach cramps.

Oral administration of laxatives, on the other hand, usually takes longer to provide relief. Bulk-forming laxatives, for example, can take up to a few days to be effective. While oral laxatives may take longer to work, they are generally gentler on the body and have a lower risk of side effects.

It is important to follow the instructions provided with the laxative to ensure proper usage and reduce the risk of side effects. Additionally, staying well-hydrated is crucial when taking laxatives, especially with bulk-forming and osmotic types, as they can lead to dehydration.

In summary, laxatives can be administered orally or rectally, each method having its own advantages and considerations. Oral administration is generally gentler and safer, while rectal administration provides faster relief but with a higher risk of side effects.

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They should be used sparingly and occasionally

Laxatives are a type of medicine used to treat constipation. They are available over the counter and by prescription. While they can be effective, they should be used sparingly and occasionally.

Laxatives can have side effects, and overuse can lead to health complications. For example, excessive or prolonged use of laxatives can cause diarrhoea, intestinal obstruction, and imbalances in electrolytes and minerals. In addition, laxatives can cause dehydration, which can lead to lightheadedness, headaches, and dark urine. In extreme cases, dehydration can even be fatal.

Furthermore, laxative misuse is relatively common. Some people attempt to lose weight by using laxatives frequently, which can lead to health complications and contribute to an eating disorder diagnosis. People with anorexia and bulimia sometimes use large amounts of laxatives as part of their disordered eating behaviour.

Laxatives should only be used occasionally and for short periods. They are not usually recommended for children or people with certain health conditions, such as Crohn's disease or ulcerative colitis. Instead, it is better to make lifestyle changes, such as increasing fibre and fluid intake and regular exercise, to prevent constipation.

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Frequently asked questions

Laxatives are a type of medicine that can treat constipation by softening stools or stimulating the bowels to move. They contain chemicals that increase stool motility, bulk, and frequency, thus relieving temporary constipation.

There are four main types of laxatives: bulk-forming, osmotic, stool softener, and stimulant. Less common types include lubricant, saline, prokinetic, and prescription laxatives.

Laxatives come in different forms, including pills, capsules, liquids, syrups, suppositories, and enemas. They should be taken as directed to prevent side effects and reduce the risk of overdose.

General side effects may include bloating, gas, and stomach cramps. Overuse can lead to complications such as electrolyte imbalance, chronic constipation, and intestinal blockage.

If you are experiencing occasional constipation that has not improved with lifestyle changes, or if you have tried a laxative that is not working, it is recommended to consult a doctor. Constipation may be a warning sign of a more serious condition.

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