Mebendazole

Please note: these are basic guidelines, refer to your doctor for a professional medical opinion.

Popular brand names:

Cipex, D-worm, Vermox, Wormstop

Drug group:

Anti-helmintic drug

Prescription needed?

No (threadworm infection); Yes (Other worm infections)

What does it do?

Mebendazole is used to treat various intestinal worm infestations including:

• Threadworms
• Roundworms
• Hookworms
• Whipworms

How does it work?

• Mebendazole paralyses the worms, which are then passed out in the faeces
• It does not kill threadworm eggs, which are deposited around the anus by adult worms

How should it be used?

All members of the family should be treated at the same time.

To prevent reinfection by transfer of threadworm eggs from the anus to the mouth, treatment includes the following hygiene measures:

• Wash hands thoroughly
• Finger nails: scrub frequently, keep short and avoid biting
• Bath or shower and change underwear every morning
• Thoroughly wash bed linen/towels, do not share towels/face cloths
• Vacuum and clean the house regularly

What is the typical dosage?

Your doctor will recommend a dosage tailored to your need, but typically:

• Threadworm: 100mg once (single dose); can be repeated after 2 weeks if reinfection occurs
• Other worms: 100mg taken twice daily for 3 days

How quickly will it start to work?

Within a few hours         
                

How long will the effects last?

12-24 hours  
         

When should I stop using it?

Only one dose is needed for treatment of threadworm, complete the 3 day course for eradication of other worms.          
               

Is it safe for prolonged use?

Mebendazole is not used long term.                                                        

What are the possible side effects?

The following have been reported:  

• More common: gastrointestinal symptoms (abdominal pain, diarrhoea) - more likely with high level of worm infestation
• Report to your doctor before taking your next dose if you experience: seizures, rash

What other considerations are important?

Dosage may be adjusted by your doctor under certain conditions.

• Certain health problems: fructose intolerance
• Other medicines: cimetide, metronidazole
• Pregnancy and breast-feeding: Safety in pregnancy not established, not recommended for use while breastfeeding
• Children: Not recommended under 2 years
• Over 60: No special problems
• Driving and hazardous work: No special problems
• Alcohol: No special problems