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IVERMECTIN

Generic: ivermectin

Verified·Apr 23, 2026
Manufacturer
Merck
NDC
51672-4230
RxCUI
1246673
Route
TOPICAL
ICD-10 indication
B73.0

Affordability Check

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About IVERMECTIN

What is this medication?

Ivermectin is a prescription medication primarily used to treat infections caused by certain parasitic worms. It is an antiparasitic drug that belongs to the class of medications known as anthelmintics. In humans, it is most commonly prescribed for the treatment of intestinal strongyloidiasis and onchocerciasis, which is also known as river blindness. These conditions are caused by specific types of roundworms that can affect the digestive tract, skin, and eyes.

In addition to treating internal parasites, ivermectin may also be used topically or orally to manage external parasitic infestations like head lice and scabies. The medication works by binding to parts of the nerve and muscle cells of the parasite, leading to paralysis and death of the organism. This helps to clear the infection from the body. It is important to use this medication exactly as directed by a healthcare professional for the specific condition being treated.

Copay & patient assistance

  • Patient Copay Amount: Not Publicly Available
  • Maximum Annual Benefit Limit: Not Publicly Available
  • Core Eligibility Restrictions: Not Publicly Available
  • RxBIN, PCN, and Group numbers: Not Publicly Available

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Prescribing information

From the FDA-approved label for IVERMECTIN. Official source: DailyMed (NLM) · Label effective Dec 22, 2025

Indications and usage
Use treats head lice
Dosage and administration
Directions Important: Read warnings before use children 6 months of age to under 12 years of age: an adult should supervise use adults and children 6 months of age and over: Inspect all household members should be checked by another person for lice and/or nits (eggs) use a magnifying glass in bright light to help you see the lice and/or nits (eggs) use a tool, such as a comb or two unsharpened pencils to lift and part the hair look for tiny nits near the scalp, beginning at the back of the neck and behind the ears examine small sections of the hair (1-2 inches wide) at a time unlike dandruff, nits stick to the hair. Dandruff should move when lightly touched. if either lice or nits (eggs) are found, treat with product Treat your hair and scalp must be DRY before applying product use the top of cap to break the tamper seal on the tube apply product directly to dry hair and scalp completely cover your scalp and hair closest to the scalp first, and then apply outwards towards the ends of your hair use only amount needed to completely cover hair and scalp, up to 1 entire tube, and discard the remaining rub product throughout your hair it is important to completely cover your entire head so that all lice and eggs are exposed to the lotion. Be sure that each hair is coated from the scalp to the tip. Wait and rinse allow product to stay on your hair and scalp for 10 minutes after it has been applied. Use a timer or clock. Start timing after you have completely covered your hair and scalp with product. after 10 minutes, rinse product completely from your hair and scalp using only water after rinsing, dry and style as usual. Wait 24 hours before applying shampoo. After treatment wash your hands after applying product nit combing is not necessary when treating with product for it to work, but if desired, a fine-tooth comb or special nit comb may be used to remove dead lice and nits this is a single use product. Discard tube after use. do not use again on the same person and same lice infestation without talking to a healthcare provider first if infestation continues, see a doctor for other treatments machine wash any bedding and clothing used by anyone having lice. Machine wash at high temperatures (150°F) and tumble in a hot dryer for 20 minutes. after finishing treatment with lice medicine, check everyone in your family for lice after one week. Consider treatment for those who have lice.
Warnings
Warnings For external use only. Use only on the scalp. Do not use on children under 6 months of age near the eyes inside the nose, ear, mouth, or vagina on lice in eyebrows or eyelashes. See a doctor if lice are present in these areas. Ask a doctor before use if you have any skin conditions or sensitivities are pregnant or plan to become pregnant. It is not known if product can harm your unborn baby. are currently or planning to breastfeed. Avoid getting product on your breast to help prevent contact by your baby. When using this product keep eyes tightly closed and protect eyes with a washcloth or towel if product gets into eyes, gently flush with water eye redness, soreness, or irritation can occur dandruff, dry skin, or burning sensation of the skin can occur Stop use and ask a doctor if breathing difficulty occurs eye irritation occurs skin or scalp irritation continues or infection occurs rash develops If pregnant or breastfeeding, ask a health professional before use. Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center (1-800-222-1222) right away.

Label text is reproduced as-is from the FDA-approved label. We do not paraphrase, summarize, or omit. Content above is for informational purposes only and is not medical advice. Always consult your prescribing clinician or pharmacist before making decisions about your medication.

Conditions we've indexed resources for

Click a condition to see copay cards, grants, and PA rules specific to it. For the full list of FDA-approved indications, see Prescribing information above.

Medicare Part D coverage

How IVERMECTIN appears across Medicare Part D plan formularies nationally. Source: CMS monthly Prescription Drug Plan file (2026-04-30).

Covered by plans

64%

3,542 of 5,509 plans

Most common tier

Tier 2

On 34% of covering formularies

Prior authorization required

59%

of covering formularies

TierFormularies on this tierShare
Tier 1 (preferred generic)51
22%
Tier 2 (generic)80
34%
Tier 3 (preferred brand)77
33%
Tier 4 (non-preferred brand)24
10%

Step therapy: 1% of formularies

Quantity limits: 39% of formularies

Coverage breadth: 232 of 65 formularies

How to read this:plans on the same formulary share tier + PA rules. Your specific plan's copay depends on (a) the tier above, (b) your plan's cost-share for that tier, (c) whether you're in the initial coverage phase or past the 2026 $2,000 out-of-pocket cap. For your exact plan, check its Summary of Benefits or log in to your Medicare.gov account. Copay cards don't apply to Medicare (federal law).

Prior authorization & coverage

PayerPAStep therapyCopay tier

Medicare Part D

Medicare Part D

Medicare Part D

Related drugs

How this page is sourced

  • Drug identity verified against openFDA NDC Directory.
  • Label text (when shown) originates from NLM DailyMed.
  • Copay and assistance URLs verified periodically; if you hit a broken link, tell us.

Rare-disease navigation (specialists, trials, patient communities)

IVERMECTIN treats a rare condition. For in-depth disease pages on our sister site:

UniteRare.org is our sister site for rare-disease navigation — same editorial team, same accuracy standards.