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Loperamide, sold under the brand name Imodium, among others, [1] is a medication of the opioid receptor agonist class used to decrease the frequency of diarrhea. [ 5 ] [ 4 ] It is often used for this purpose in irritable bowel syndrome , inflammatory bowel disease , short bowel syndrome , [ 4 ] Crohn's disease , and ulcerative colitis . [ 5 ]
It contains loperamide and simethicone. Loperamide is a μ-opioid receptor agonist that works in the intestines. [1] Although it is an opioid, it has no effects on the central nervous system. It reduces diarrhea by slowing the transit time of contents through the intestinal tract thereby allowing more water to be reabsorbed from the intestinal ...
[7] [19] [20] The medication loperamide may be used to help with diarrhea while laxatives may be used to help with constipation. [7] There is strong clinical-trial evidence for the use of antidepressants, often in lower doses than that used for depression or anxiety, even in patients without comorbid mood disorder.
4-Phenylpiperidine is the base structure for a variety of opioids, such as pethidine (meperidine), ketobemidone, alvimopan, loperamide, and diphenoxylate. See also [ edit ]
Partial agonists, like the anti-diarrhea drug loperamide and antagonists, like naloxegol for opioid-induced constipation, do not cross the blood–brain barrier, but can displace other opioids from binding to those receptors in the myenteric plexus. Because opioids are addictive and may result in fatal overdose, most are controlled substances.
In 1944, two clinicians who evaluated the expectorant action of paregoric, concluded: The survival of paregoric through the centuries, and particularly through recent critical decades, is probably due to keen clinical observation and stubborn adherence to the clinical deduction that paregoric is useful in certain types of cough.
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Codeine is used to treat mild to moderate pain. [4] It is commonly used to treat post-surgical dental pain. [13]Weak evidence indicates that it is useful in cancer pain, but it may have increased adverse effects, especially constipation, compared to other opioids. [14]