Description
What It Is
Lactulin is a lactulose-based osmotic laxative (synthetic disaccharide) used to treat chronic constipation and manage hepatic encephalopathy (a brain condition caused by liver dysfunction)
Mechanism of Action
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Softens stool by drawing water into the colon, promoting easier bowel movements
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Reduces blood ammonia levels—beneficial in liver disease—by converting ammonia into non-absorbable ammonium in the colon
Uses & Indications
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Chronic or occasional constipation, especially when stool is hard or infrequent
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Hepatic encephalopathy, to help prevent confusion, tremors, and lowered consciousness due to high blood ammonia
Onset & Safety
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Usually takes 2–3 days (up to 48 hours) to show an effect
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Common side effects: bloating, flatulence, nausea, abdominal cramps, and diarrhea (particularly if dosage is too high)
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Generally safe during pregnancy and breastfeeding, but consult a healthcare provider if used long-term in vulnerable populations
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Avoid in cases of galactosemia or lactose intolerance due to sugar content of the syrup
Practical Use Tips
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Dosage: Typically adjusted to produce 2–3 soft stools per day; adults often start with 15–30 ml daily; for hepatic encephalopathy, up to 30–50 ml three times daily under medical supervision
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Administration: Can be taken with or without food. If the taste is too sweet, mix with water or fruit juice
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Stay hydrated: Drink plenty of fluids, especially during treatment, to prevent dehydration
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