Common Nausea, Vomiting, Dizziness, Headache, Flatulence, Bloating, Constipation.

Expert advice for Rifarex Tablet
While you are taking rifaximin, it may cause a reddish discolouration of the urine. This is quite normal. If you are using oral contraceptives take additional precautions while taking rifaximin. Oral contraceptives may not work as well when you are taking this medicine and/or when you have diarrhea. Rifaximin does not normally affect the ability to drive and use machines, but may cause dizziness in some patients. If you feel dizzy you should not drive or operate machinery. if you are pregnant or breast feeding speak to your doctor before starting the drug. To make sure rifaximin is safe for you, tell your doctor if you have:

liver disease
diarrhea with a fever
watery or bloody diarrhea

Treatment with any antibiotic including rifaximin may cause severe diarrhea. You should stop taking it and contact your doctor immediately. Diarrhea may even occur few months after the drug has been stopped.

Q. Is Rifarex an antibiotic?
Yes, Rifarex is an antibiotic that kills bacteria, which can cause a disease called hepatic encephalopathy (symptoms include agitation, confusion, muscle problems, difficulty in speaking and in some cases coma).

Q. Can I take Rifarex with amoxicillin?
Rifarex can be taken with amoxicillin as no interactions have been reported between the two medicines. However, interactions may occur, please consult your doctor before taking the two medicines together.

Q. Is Rifarex safe?
Yes, Rifarex is a safe medicine. However, it has its own side effects. It should always be taken for a prescribed duration in prescribed doses as advised by your doctor.

Q. Is Rifarex a penicillin?
Rifarex is not a penicillin. It is a non-aminoglycoside semi-synthetic, nonsystemic antibiotic derived from rifamycin .

Q. Does Rifarex kill good bacteria?
Rifarex like other antibiotics can alter the normal bacteria in the intestine and this can lead to severe diarrhea.

Q. Does Rifarex work for small intestinal bacterial overgrowth (SIBO)?
Rifarex is not indicated for the treatment of small intestinal bacterial overgrowth (SIBO). In this condition, there is a presence of lot of bacteria in the small intestine which can cause chronic diarrhea and malabsorption.

Q. Does Rifarex cause orange urine?
Yes, the use of Rifarex may cause a reddish discoloration of the urine.

Q. Does Rifarex affect oral contraceptives (birth control)?
Interactions have not been reported between Rifarex and oral contraceptives (birth control pills). However, interactions may occur. Please consult your doctor before taking the two medicines together.

Q. Does Rifarex work for irritable bowel syndrome (IBS)?
Rifarex has not been approved for the treatment of irritable bowel syndrome (IBS). Please consult your doctor before using Rifarex for irritable bowel syndrome (IBS).

Q. Does Rifarex cause weight gain?
Weight gain has not been reported as an effect of Rifarex.

Q. Does Rifarex cause diarrhea?
Diarrhea is a common side effect of Rifarex. If you have severe diarrhea during or after using Rifarex, you should stop taking Rifarex and contact your doctor immediately.

Q. Does Rifarex kill Helicobacter pylori?
Rifarex has not been reported to kill Helicobacter pylori.

Q. Can paracetamol be taken with Rifarex?
Rifarex can be taken with paracetamol as no interactions have been clinically observed between paracetamol and Rifarex. However, interactions may occur. Please talk to your doctor in case you require to take the two medicines together.

Q. Can I take Rifarex with ibuprofen?
Rifarex can be taken with ibuprofen as no interactions have been clinically observed between the two. However, interactions may occur. Please talk to your doctor in case you require to take the two medicines together.

Q. Does Rifarex cause constipation?
Constipation is a rare side effect of Rifarex. Please consult your doctor in case you experience intolerable constipation.