Loperamide
Functional Colonic Diseases, Bacillary Dysentery ... show more
Drug Status
Government Approvals
US(FDA), UK(BNF)
WHO Essential Medicine
YES
Known Teratogen
No
Pharmaceutical Class
Opioid Agonist
Controlled Drug Substance
No

Loperamide
Summary
Loperamide is primarily used to treat diarrhea. It's also used to manage symptoms of Irritable Bowel Syndrome (IBS).
Loperamide works by slowing down the movement of the intestines. This allows more water to be absorbed from the stool, which helps to reduce the frequency of bowel movements. It does not affect the central nervous system.
The usual dosage of Loperamide for adults is 4 mg (2 capsules) after the first loose stool, followed by 2 mg (1 capsule) after each subsequent stool, up to 8 mg (4 capsules) per day. It should be taken orally with water.
Common side effects of Loperamide include constipation, dizziness, nausea, and abdominal discomfort. Rarely, it can cause allergic reactions or heart rhythm disturbances.
Loperamide can interact with certain medications and reduce their effectiveness. It should not be used in children under 2 years of age. Overuse or misuse may lead to serious complications. If diarrhea persists for more than 48 hours, consult a healthcare provider.
Indications and Purpose
How does Loperamide work?
Loperamide works by acting on the opioid receptors in the intestinal muscles, slowing down the movement of the intestines. This allows for more water absorption from the stool, leading to firmer stools and reduced bowel frequency. Unlike other opioids, Loperamide does not affect the central nervous system, so it does not cause sedation or euphoria.
Is Loperamide effective?
Studies show that Loperamide effectively reduces diarrhea by slowing down gut movement and increasing water absorption, which results in firmer stools and fewer bowel movements. Clinical trials have demonstrated its effectiveness in treating acute diarrhea, chronic diarrhea associated with conditions like IBS, and traveler’s diarrhea, providing rapid relief and improving quality of life.
What is Loperamide?
Loperamide is commonly used to treat diarrhea and manage symptoms of irritable bowel syndrome (IBS). It works by slowing down the movement of the intestines, allowing for more water to be absorbed from the stool, which helps to reduce the frequency of bowel movements. Loperamide acts on the opioid receptors in the gut without affecting the central nervous system.
Directions for Use
For how long do I take Loperamide?
If your diarrhea doesn't get better in two days, stop taking the medicine and see a doctor. Adults and kids 12 and older can take a maximum of 4 tablets a day. Kids aged 9-11 should take no more than 3, and kids aged 6-8 should take no more than 2.
How do I dispose of Loperamide?
If you can, bring unused medicines to a drug take-back program or collection site at a pharmacy or hospital. They will dispose of this medicine properly so they don't harm people or the environment. If you can't find a take-back program, you can throw most medicines in the trash at home. But first, take them out of their original containers, mix them with something undesirable like used coffee grounds, seal the mixture in a plastic bag and throw it away.
How do I take Loperamide?
Loperamide can be taken with or without food. There are no specific food restrictions when using Loperamide. However, it’s important to stay hydrated, especially if you have diarrhea, as dehydration can occur. Always follow the dosing instructions and avoid taking more than the recommended amount. If symptoms persist, consult your healthcare provider.
How long does it take for Loperamide to start working?
Loperamide typically starts working within 1 hour of taking the dose. It helps to reduce the frequency of bowel movements and control diarrhea by slowing down gut movement. For best results, follow the recommended dosage, and if symptoms persist after 48 hours, consult a healthcare provider.
How should I store Loperamide?
Loperamide should be stored at room temperature, between 59° to 86°F (15° to 30°C). It should be kept away from light, moisture, and heat.
What is the usual dose of Loperamide?
Adults should take 4 to 8 milligrams a day, that's two to four capsules. The most you should take is 16 milligrams (eight capsules). For kids aged 2 to 5 and weighing 20 kilograms or less, use the liquid medicine. For kids 6 to 12, you can use capsules or liquid, but the amount depends on their weight. If you're still sick after taking the maximum dose for ten days, see a doctor.
Warnings and Precautions
Can I take Loperamide with other prescription drugs?
Antacids: Taking Loperamide with antacids can reduce its effectiveness by reducing the amount of Loperamide that is absorbed by the body.
Antibiotics: Taking Loperamide with antibiotics such as erythromycin and rifampin can increase the risk of side effects, including constipation and abdominal cramps.
Opioid pain medications: Taking Loperamide with opioid pain medications can increase the risk of side effects, including drowsiness, constipation, and respiratory depression.
Can Loperamide be taken safely while breastfeeding?
Breastfeeding mothers should avoid Loperamide unless the potential benefits outweigh the potential risks to the infant.
Can Loperamide be taken safely while pregnant?
Loperamide is classified as a Pregnancy Category B drug, but there is limited information available on its safety during pregnancy. Pregnant women should discuss the risks and benefits with their healthcare provider.
Does Loperamide have adverse effects?
Adverse effects, which are unwanted or harmful reactions to a medicine, can occur with any medication. For this medicine, common adverse effects might include nausea, headache, dizziness, fatigue, and dry mouth. These effects can vary in how often they occur, but they are generally not severe. However, there are rare but serious adverse effects that require immediate medical attention, such as difficulty breathing, severe rash, or swelling of the face and throat. It's crucial to report any new or worsening symptoms to a healthcare provider. Never stop taking a medicine without consulting a healthcare professional, as they can provide guidance on managing side effects or adjusting treatment.
Does Loperamide have any safety warnings?
To determine if a medicine has safety warnings, you should first check the prescription information provided with the medicine. This information often includes a section on warnings and precautions. For example, if a medicine has a warning about causing drowsiness, the rationale is that it affects the central nervous system, which is the part of the body that controls most functions of the mind and body. The possible consequence is that it may impair your ability to drive or operate machinery. Symptoms to monitor include feeling unusually sleepy or having trouble concentrating. If you notice these symptoms, it’s important to avoid activities that require full alertness and consult your healthcare provider for advice.
Is it safe to drink alcohol while taking Loperamide?
Drinking alcohol with Loperamide may increase drowsiness or dizziness. It’s best to limit alcohol intake and consult your doctor for personalized advice.
Is it safe to exercise while taking Loperamide?
Exercise is generally safe while taking Loperamide, but dehydration from diarrhea and potential dizziness or fatigue may make strenuous activity challenging. Ensure you are well-hydrated and avoid intense exercise until symptoms improve. Consult your doctor for guidance.
Is it safe to stop Loperamide?
To determine if it's safe to stop a medicine, first identify its purpose. If it's for managing a chronic condition like hypertension or diabetes, stopping it suddenly can lead to serious health risks, such as increased blood pressure or blood sugar levels. For medicines providing symptomatic relief or treating temporary conditions, stopping might lead to the return of symptoms or incomplete treatment of the condition. Some medicines can cause withdrawal symptoms or rebound effects, which means symptoms can return worse than before. Abruptly stopping certain medicines can be life-threatening, especially if they affect the heart or brain. Always consult a doctor before stopping any medicine to ensure it's done safely and appropriately.
Is Loperamide addictive?
This medicine does not have any known potential for dependence or addiction. It is considered safe in terms of habit-forming properties. Therefore, there is no need to worry about developing a physical or psychological dependence on this medication. However, it is always important to follow the prescribed dosage and instructions provided by your healthcare provider to ensure safe and effective use. If you have any concerns or experience any unusual symptoms, it is advisable to consult with your healthcare provider for further guidance.
Is Loperamide safe for the elderly?
Older people's bodies can react differently to some medicines, especially those affecting their heart rhythm. One such medicine is loperamide (used for diarrhea). If an older person is already taking heart medicines that might cause heart rhythm problems, adding loperamide could be risky. The doctor doesn't need to change the loperamide dose for older adults, but they need to be extra careful because the medicine might stay in their body longer, increasing the chance of side effects.
What are the most common side effects of Loperamide?
A side effect is an unwanted or unexpected symptom caused by a medicine. For this medicine, common side effects may include nausea, which is feeling sick to your stomach, dizziness, which is feeling lightheaded or unsteady, headache, which is pain in the head, fatigue, which is feeling very tired, and dry mouth, which is a lack of saliva. The frequency of these side effects can vary, but they are generally considered common. It's important to note that when starting a new medicine, people might experience new symptoms that could be coincidental, unrelated, or temporary. These symptoms might also be due to another health issue. Always talk to a healthcare provider before stopping any medicine, as they can provide guidance on managing side effects and ensure your treatment is safe and effective.
Who should avoid taking Loperamide?
Loperamide can cause serious allergic reactions and abnormal heart rhythms, and should not be used in children under 2 years of age.