Mutaflor (Escherichia Coli Strain Nissle 1917)

Mutaflor is a probiotic that acts on the gastrointestinal microbiota to improve disease outcomes.

• Ulcerative colitis: helps maintain remission and reduce flare‑ups.
• Irritable bowel syndrome: may alleviate abdominal discomfort and irregular bowel habits.
• Antibiotic‑associated diarrhea: assists in preventing diarrhea that can follow broad‑spectrum antibiotic therapy.

• Mutaflor delivers live Escherichia coli Nissle 1917 bacteria that colonize the intestinal lumen, compete with pathogenic microbes for nutrients and adhesion sites, and produce antimicrobial substances. The strain also interacts with gut‑associated lymphoid tissue, modulating local immune responses and promoting a balanced microbial ecosystem that supports intestinal barrier function.

Mutaflor is generally well tolerated, but adverse reactions can occur.

Common Side Effects

• Bloating: mild abdominal distension reported by some users.
• Flatulence: increased intestinal gas may be experienced.
• Nausea: occasional feeling of queasiness.
• Diarrhea: transient loose stools in the initial treatment period.

Serious or Rare Side Effects

• Sepsis: rare bloodstream infection, primarily in severely immunocompromised patients.
• Bacteremia: presence of the probiotic strain in blood, reported in vulnerable individuals.
• Severe allergic reaction: anaphylaxis or angioedema in hypersensitive patients.
• Infection of central lines: possible colonisation of indwelling devices in high‑risk settings.

Before prescribing Mutaflor, clinicians should consider patient‑specific factors and follow safe handling practices.

• Immune status assessment: evaluate for severe immunosuppression before use.
• Caution in critical illness: avoid in patients with uncontrolled sepsis or organ failure.
• Monitor for infection signs: watch for fever, chills, or gastrointestinal bleeding.
• Concomitant antibiotics: be aware that broad‑spectrum antibiotics may diminish probiotic efficacy.
• Store at room temperature: keep in the original pack, protect from moisture.

Mutaflor may interact with other agents that alter gut flora or immune function.

Major Interactions (Avoid)

• Broad‑spectrum antibiotics: can eradicate the probiotic strain, reducing benefit.
• Immunosuppressants: may increase risk of opportunistic infection.
• Antifungal agents (e.g., fluconazole): potential alteration of microbial balance.

Moderate Interactions (Monitor Closely)

• Proton pump inhibitors: altered gastric pH may affect bacterial survival.
• Non‑steroidal anti‑inflammatory drugs (NSAIDs): may increase gastrointestinal irritation.
• Live vaccines: probiotic may modulate immune response to vaccination.