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What is the proper dosage of ivermectin?

The proper dosage of ivermectin (Mectizan, Stromectol) depends on a person's weight and what the drug is being prescribed for. Ivermectin treats infections caused by worms, such as strongyloidiasis (threadworm) and onchocerciasis (river blindness). Here are guidelines:
  • for threadworm in children who weigh 15 kilograms (33 pounds) or more: a single dose of 200 micrograms per kilogram of body weight (mcg/kg), taken with water on an empty stomach (when the child has not eaten for several hours)
  • for river blindness in children weighing 15 kilograms (about 33 pounds) or more: a single dose of 150 mcg/kg, taken with water on an empty stomach (when the child has not eaten for several hours)
  • for threadworm in adults: a single dose of 200 mcg/kg, taken with water on an empty stomach (when you have not eaten for several hours)
  • for river blindness in adults: a single dose of 150 mcg/kg, taken with water on an empty stomach (when you have not eaten for several hours)

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.