What are the indications of Normix (rifaximin) and the recommended dosing?

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Last updated: March 10, 2026 • View editorial policy

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Mga Indikasyon at Dosis ng Normix (Rifaximin)

Ang Normix (rifaximin) ay ginagamit para sa tatlong pangunahing indikasyon: travelers' diarrhea, irritable bowel syndrome with diarrhea (IBS-D), at prevention ng recurrent hepatic encephalopathy.

Mga Pangunahing Indikasyon at Dosis

1. Travelers' Diarrhea (Severe, Non-dysenteric)

  • Dosis: 200 mg tatlong beses sa isang araw (600 mg/araw) sa loob ng 3 araw 1
  • Epektibo para sa severe, non-dysenteric travelers' diarrhea
  • Mahalagang babala: Huwag gamitin kung may suspetya ng Campylobacter, Salmonella, Shigella, o iba pang invasive diarrhea (dysentery na may dugo o mataas na lagnat) 1
  • Para sa dysentery o febrile diarrhea, azithromycin ang mas mainam na gamot 1

2. Irritable Bowel Syndrome with Diarrhea (IBS-D)

  • Dosis: 550 mg dalawang beses sa isang araw sa loob ng 14 araw 2, 3
  • Pwedeng ulitin ang treatment hanggang dalawang beses kung bumalik ang mga sintomas 3
  • Epektibo para sa global symptoms at bloating, ngunit limitado ang epekto sa abdominal pain 2
  • Ito ay second-line treatment sa secondary care 2

3. Prevention ng Recurrent Hepatic Encephalopathy

  • Dosis: 550 mg dalawang beses sa isang araw (1100 mg/araw) bilang long-term maintenance 4, 5
  • Ginagamit kasama ng lactulose para sa secondary prophylaxis pagkatapos ng >1 episode ng overt hepatic encephalopathy 5
  • Nabawasan ang breakthrough HE episodes (22% vs 46% sa placebo) at hospitalization rates 6
  • Maximum dose ay 1200 mg/araw 4

4. Recurrent Clostridium difficile Infection (CDI)

  • Dosis: 400 mg tatlong beses sa isang araw sa loob ng 20 araw, pagkatapos ng 10-day vancomycin treatment 7
  • Ginagamit para sa second o subsequent recurrence ng CDI 7
  • Ito ay weak recommendation dahil sa limited evidence 7

Mahahalagang Babala

Mga kontraindikasyon at limitasyon:

  • Hindi aprubado para sa mga bata na wala pang 12 taong gulang 7
  • Huwag gamitin para sa invasive diarrhea na may lagnat o dugo sa dumi 1
  • May mataas na rifaximin resistance sa ilang ribotypes ng C. difficile, lalo na RT017 (72.3%) at RT027 (47.0%) 8
  • Long-term use ay maaaring magdulot ng high-level rifaximin resistance sa intestinal E. coli (67% ng mga pasyente) 9

Mga karaniwang side effects:

  • Generally well-tolerated, katulad ng placebo 6
  • Para sa HE: ascites, dizziness, fatigue, peripheral edema (10-15% ng mga pasyente) 6
  • Para sa IBS: abdominal pain, diarrhea, bad taste, headache (<10% ng mga pasyente) 6

Ang rifaximin ay non-absorbable antibiotic na kumikilos locally sa gastrointestinal tract, kaya minimal ang systemic adverse effects 6.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.