Mebendazole Grindeks (Mebendazole)

Mebendazole is an anthelmintic medication used to treat infections caused by intestinal nematodes.

• Ascariasis: eliminates Ascaris lumbricoides worms, reducing egg shedding and gastrointestinal symptoms.
• Hookworm infection: eradicates Ancylostoma duodenale and Necator americanus, relieving abdominal discomfort and anemia.
• Trichuriasis: clears Trichuris trichiura, improving abdominal pain and blood loss.
• Enterobiasis: removes Enterobius vermicularis, stopping perianal itching and reinfection.

• Mebendazole binds selectively to the β‑tubulin of susceptible parasites, preventing polymerisation of microtubules. This disrupts the formation of the cytoskeletal network essential for glucose uptake and other metabolic processes, leading to depletion of cellular energy and eventual death of the helminth. The drug exhibits low affinity for mammalian tubulin, which limits host toxicity. Absorption after oral administration is limited, allowing high concentrations to remain in the intestinal lumen where the parasites reside.

Mebendazole may be associated with a range of adverse reactions, most of which are mild and reversible.

Common Side Effects

• Abdominal pain: mild cramps.
• Nausea: occasional queasiness.
• Diarrhoea: transient loose stools.
• Headache: mild to moderate.

Serious or Rare Side Effects

• Hepatotoxicity: jaundice or elevated liver enzymes.
• Agranulocytosis: marked drop in white blood cells.
• Severe allergic reaction: rash, swelling, or anaphylaxis.
• Stevens‑Johnson syndrome: skin blistering and mucosal involvement.

Before prescribing Mebendazole, clinicians should consider several safety considerations.

• Pregnancy: use only if potential benefit justifies risk, as safety data are limited.
• Liver disease: assess hepatic function because rare hepatotoxicity has been reported.
• Blood disorders: monitor complete blood count in patients with pre‑existing hematologic conditions.
• Drug interactions: review concomitant medications that may affect tubulin binding or hepatic metabolism.
• Store at ambient temperature: keep below 25 °C, in the original packaging, protected from moisture and light.

Mebendazole can interact with other medicines, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Cimetidine: may increase systemic exposure, raising risk of toxicity.
• Itraconazole: strong inhibition of metabolism can lead to elevated levels.
• Cyclosporine: combined use may enhance hepatotoxic potential.

Moderate Interactions (Monitor Closely)

• Antacids containing aluminum or magnesium: may reduce absorption.
• Carbamazepine: enzyme induction may lower mebendazole concentrations.
• Warfarin: occasional reports of altered anticoagulant effect; monitor INR.