Fexan 200 mg Tablet
Fexan 200 mg Tablet Uses, Dosage, Side Effects, Food Interaction and all others data.
Fexan 200 mg Tablet is a non-aminoglycoside semi-synthetic antibacterial derived from rifamycin SV. It inhibits bacterial RNA synthesis by binding to the bacterial DNA-dependent RNA polymerase and has antibacterial activity against Escherichia coli (E. coli).
Fexan 200 mg Tablet is a structural analog of rifampin and a non-systemic, gastrointestinal site-specific antibiotic. This non-systemic property of the drug is due to the addition of a pyridoimidazole ring, which renders it non-absorbable. Fexan 200 mg Tablet acts by inhibiting bacterial ribonucleic acid (RNA) synthesis and contributes to restore intestinal microflora imbalance. Other studies have also shown rifaximin to be an pregnane X receptor (PXR) activator. As PXR is responsible for inhibiting the proinflammatory transcription factor NF-kappa B (NF-κB) and is inhibited in inflammatory bowel disease (IBD), rifaximin was proven to be effective for the treatment of IBS-D.
| Trade Name | Fexan 200 mg Tablet |
| Availability | Prescription only |
| Generic | Rifaximin |
| Rifaximin Other Names | Rifaxidin, Rifaximin, Rifaximina, Rifaximine, Rifaximinun |
| Related Drugs | ciprofloxacin, dicyclomine, sulfamethoxazole / trimethoprim, Bactrim, loperamide, lactulose, Bentyl, hyoscyamine, Xifaxan, Imodium |
| Weight | 200 mg |
| Type | Tablet |
| Formula | C43H51N3O11 |
| Weight | Average: 785.8785 Monoisotopic: 785.352359489 |
| Groups | Approved, Investigational |
| Therapeutic Class | Miscellaneous Antibiotics |
| Manufacturer | Drug International Ltd. |
| Available Country | Bangladesh |
| Last Updated: | September 24, 2024 at 5:38 am |
Uses
Acute infectious diarrhoea including travelers diarrhoea, Diarrhoea predominant Irritable Bowel Syndrome (IBS-D), Hepatic Encephalopathy (H.E.)
Fexan 200 mg Tablet is also used to associated treatment for these conditions: Bacterial Infections, Clostridium difficile infection recurrence, Hepatic Encephalopathy (HE), Irritable Bowel Syndrome (IBS), Traveler's Diarrhea
How Fexan 200 mg Tablet works
Fexan 200 mg Tablet acts by inhibiting RNA synthesis in susceptible bacteria by binding to the beta-subunit of bacterial deoxyribonucleic acid (DNA)-dependent ribonucleic acid (RNA) polymerase enzyme. This binding blocks translocation, which stops transcription.
Dosage
Fexan 200 mg Tablet dosage
Acute Infectious Diarrhoea including Travelers’ Diarrhoea: 200 mg three times daily for 3 days.
Diarrhoea predominant Irritable Bowel Syndrome (IBS-D): 550 mg three times daily for 14 days.
Hepatic Encephalopathy (H.E.): 550 mg twice daily
Side Effects
Common side effects are nausea, vomiting, abdominal pain, flatulence, headache and dizziness.
Toxicity
LD50 > 2 g/kg (orally, in rats)
Precaution
Pregnancy and lactation. Caution in severe hepatic impairment (Child-Pugh class C). Not effective against diarrhoea caused by pathogen other than E. coli ; or diarrhoea complicated by fever and/or blood in the stool. Prolonged use may result in Clotridum difficile-associated diarrhoea. Severe hepatic impairment (Child-pugh class C).
Interaction
Although In vitro studies demonstrated the potential of Fexan 200 mg Tablet to interact with cytochrome P450 (CYP3A4), a clinical drug-drug interaction study demonstrated that Fexan 200 mg Tablet did not significantly affect the pharmacokinetics of midazolam. An additional clinical drug-drug interaction study showed no effect of Fexan 200 mg Tablet on the presystemic metabolism of an oral contraceptive containing ethinyl estradiol and norgestimate. Therefore, clinical interactions with drugs metabolized by human cytochrome P450 isozymes are not expected.
Food Interaction
- Take with or without food. Fatty meals may increase the systemic AUC of rifaximin, but do not impact Cmax. Fexan 200 mg Tablet is an antibacterial used for local action in the gastrointestinal tract; therefore, changes in systemic exposure may not significantly impact efficacy.
Fexan 200 mg Tablet Drug Interaction
Unknown: aspirin, lorazepam, amoxicillin / clavulanate, diphenhydramine, duloxetine, metronidazole, furosemide, pregabalin, polyethylene glycol 3350, esomeprazole, acetaminophen, pantoprazole, acetaminophen, cyanocobalamin, ascorbic acid, cholecalciferol, alprazolam, ondansetron, sertraline, cetirizine
Fexan 200 mg Tablet Disease Interaction
Elimination Route
Low absorption in both the fasting state and when administered within 30 minutes of a high-fat breakfast.
Half Life
Approximately 6 hours.
Elimination Route
In a mass balance study, after administration of 400 mg 14C-rifaximin orally to healthy volunteers, of the 96.94% total recovery, 96.62% of the administered radioactivity was recovered in feces almost exclusively as the unchanged drug and 0.32% was recovered in urine mostly as metabolites with 0.03% as the unchanged drug.Fexan 200 mg Tablet accounted for 18% of radioactivity in plasma. This suggests that the absorbed rifaximin undergoes metabolism with minimal renal excretion of the unchanged drug
Pregnancy & Breastfeeding use
Pregnancy Category C. There are no adequate and well-controlled studies in pregnant women. Fexan 200 mg Tablet should be used during pregnancy only if the potential benefit outweighs the potential risk to the fetus.
Use in Lactation: It is not known whether Fexan 200 mg Tablet is excreted in human milk. Because many drugs are excreted in human milk and because of the potential for adverse reactions in nursing infants from Fexan 200 mg Tablet, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.
Contraindication
Fexan 200 mg Tablet is contraindicated in patients with a hypersensitivity to Fexan 200 mg Tablet, or any of the Rifamycin antimicrobial agents, or any of the components of Fexan 200 mg Tablet.
Special Warning
Use in Children: The safety and effectiveness of Fexan 200 mg Tablet 200 mg in pediatric patients with travelers’ diarrhoea less than 12 years of age have not established.The safety and effectiveness of Fexan 200 mg Tablet 550 mg for hepatic encephalopathy have not been established in patients <18 years of age.
Use in geriatric patients: Clinical studies of Fexan 200 mg Tablet tablets did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently than younger subjects.
Use in Renal Insufficient Patients:The pharmacokinetics of Fexan 200 mg Tablet in patients with impaired renal function has not been studied.
Use in Hepatic Insufficient Patients:No dosage adjustment with Fexan 200 mg Tablet is necessary due to its limited systemic absorption. Nonetheless, caution should be exercised when Fexan 200 mg Tablet is administered to patients with severe hepatic impairment.
Acute Overdose
No specific information is available on the treatment of over dosage with Fexan 200 mg Tablet. In case of over dosage, discontinue Fexan 200 mg Tablet, treat symptomatically and institute supportive measures as required.
Storage Condition
Store at 20-25° C; excursions permitted to 15-30° C.
Innovators Monograph
You find simplified version here Fexan 200 mg Tablet
Fexan 200 mg Tablet contains Rifaximin see full prescribing information from innovator Fexan 200 mg Tablet Monograph, Fexan 200 mg Tablet MSDS, Fexan 200 mg Tablet FDA label
FAQ
What is Fexan 200 mg Tablet used for?
Fexan 200 mg Tablet is used to treat traveler's diarrhea that is caused by a bacteria called Escherichia coli. It is also used to prevent hepatic encephalopathy, which is a condition that occurs when your liver does not work normally.Fexan 200 mg Tablet is also used to treat irritable bowel syndrome with diarrhea.
How safe is Fexan 200 mg Tablet?
Fexan 200 mg Tablet is safe and well tolerated for long-term maintenance of remission from overt hepatic encephalopathy.
How does Fexan 200 mg Tablet work?
Fexan 200 mg Tablet treats traveler's diarrhea and irritable bowel syndrome by stopping the growth of the bacteria that cause diarrhea. Fexan 200 mg Tablet treats hepatic encephalopathy by stopping the growth of bacteria that produce toxins and that may worsen liver disease.
What are the common side effects of Fexan 200 mg Tablet?
Common side effects of Fexan 200 mg Tablet are include:
- Gas (flatulence)
- Headache
- Feeling as if your bowels are not completely emptied
- Feeling you need to urgently empty your bowels
- Abdominal or stomach pain
- Nausea
- Constipation
- Fever
- Vomiting
- Bloating
- Dizziness
- Tired feeling
- Swelling in your hands, feet, or torso
Is Fexan 200 mg Tablet safe during pregnancy?
There are no adequate and well controlled studies in pregnant women.Fexan 200 mg Tablet tablets should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
Is Fexan 200 mg Tablet safe during breastfeeding?
Fexan 200 mg Tablet is poorly absorbed orally and used only for gastrointestinal infections. It is not likely to reach the breastmilk or bloodstream of the infant or cause any adverse effects in breastfed infants after maternal use.
When Is the best taken of Fexan 200 mg Tablet?
Fexan 200 mg Tablet usually 2 times a day (every 12 hours).Take this medication at the same time(s) every day.
Can I take Fexan 200 mg Tablet on an empty stomach?
Fexan 200 mg Tablet should be taken on an empty stomach.
Should Fexan 200 mg Tablet be taken with food?
You may take this medicine with or without food.
Is Fexan 200 mg Tablet strong antibiotic?
Fexan 200 mg Tablet is a gastrointestinal-selective antibiotic with a broad spectrum of antimicrobial activity, an excellent safety profile, minimal drug interactions, and negligible impact on the intestinal microbiome.
How fast does Fexan 200 mg Tablet work?
After just two weeks of treatment, relief lasted for up to 6 months.
Who should not take Fexan 200 mg Tablet?
You should not take Fexan 200 mg Tablet if you are allergic to Fexan 200 mg Tablet. Tell your doctor if you have ever had.Tell your doctor if you are pregnant or breastfeeding.Fexan 200 mg Tablet should not be given to a child younger than 12 years old.
Is Fexan 200 mg Tablet safe for liver?
Fexan 200 mg Tablet could theoretically prevent SBP in patients with liver cirrhosis by reducing gut bacteria.
Can Fexan 200 mg Tablet help constipation?
The antibiotic Fexan 200 mg Tablet is used to treat non-constipated irritable bowel syndrome (IBS).
How long can I take Fexan 200 mg Tablet?
You may take Fexan 200 mg Tablet with or without food. For travelers' diarrhea, Fexan 200 mg Tablet is usually taken for only 3 days.
Is Fexan 200 mg Tablet safe for kidneys?
While the effects of Fexan 200 mg Tablet have been shown to be protective against acute kidney injury and hepatorenal syndrome in alcohol-induced cirrhosis, its long-term effects on the renal function of other cirrhotic patients are unknown.
What happens if I miss a dose of Fexan 200 mg Tablet?
Take Fexan 200 mg Tablet as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.
What should I avoid while taking Fexan 200 mg Tablet?
Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, call your doctor before using anti-diarrhea medicine.
How many Fexan 200 mg Tablet can Fexan 200 mg Tablet take in a day?
Adults and children 12 years of age and older 200 milligrams (mg) three times a day for 3 days. Children younger than 12 years of age.Use and dose must be determined by your doctor.
