Mebendazole

Aka: Mebendazole, Emverm, Vermox

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II. Indications

  1. Ancylostoma duodenale (Hookworm)
  2. Ascaris Lumbricoides (Roundworm)
  3. Enterobius Vermicularis (Pinworm)
  4. Necator americanus (Hookworm)
  5. Trichuris trichiura (Whipworm)

III. Mechanism

  1. Synthetic benzimidazole derivative
  2. Inhibits Helminth (worm) reproduction and survival
    1. Blocks microtubule formation (polymerization) in cytoplasm
    2. Blocks Glucose uptake and depletes Helminth glycogen stores
    3. Results in reduced ATP and Helminth death

IV. Medications

  1. Chewable Tablets: 100 mg
    1. In U.S., Vermox was original trade name and discontinued in 2012
    2. Rebranded in 2016 as Enverm (at astronomical prices)

V. Dosing: Adults and Children

  1. Doses for adults and children are the same
  2. Pinworm
    1. Mebendazole 100 mg orally for a single dose, and repeat in 2 weeks
  3. Roundworm, Hookworm or Whipworm
    1. Mebendazole 100 mg orally twice daily for 3 days OR
    2. Mebendazole 500 mg orally twice daily for one dose (off label)

VI. Adverse Effects

  1. Transient gastrointestinal symptoms
    1. Abdominal Pain
    2. Anorexia
    3. Diarrhea
    4. Flatulence
    5. Nausea and Vomiting
  2. Serious (Uncommon to rare)
    1. Bone Marrow suppression (Agranulocytosis, Neutropenia)
    2. Stevens-Johnson Syndrome or Toxic Epidermal Necrolysis (SJS/TEN)

VII. Safety

  1. Unknown safety in first trimester (may be used in later pregnancy)
  2. Considered safe in Lactation

VIII. Resources

  1. Mebendazole (DailyMed)
    1. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=a8c46363-f739-4f6e-bca8-1ce5e8d3f78d

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Cost: Medications

emverm (on 2/1/2022 at Medicaid.Gov Survey of pharmacy drug pricing)
EMVERM 100 MG TABLET CHEW $538.55 each
FPNotebook does not benefit financially from showing this medication data or their pharmacy links. This information is provided only to help medical providers and their patients see relative costs. Insurance plans negotiate lower medication prices with suppliers. Prices shown here are out of pocket, non-negotiated rates. See Needy Meds for financial assistance information. GoodRx is another tool for finding lower drug prices.

Related Topics in Pharmacology

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