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Where can I find the full inactive ingredient list for a specific ivermectin brand or generic?
Executive summary
You can usually find a full inactive-ingredient (excipient) list for a specific ivermectin product in the approved prescribing information or FDA label (DailyMed / Drugs@FDA) for that brand or formulation — for example, ivermectin cream 1% lists benzyl alcohol, carbomer homopolymer type C, methylparaben and others on DailyMed/DrugCentral [1] [2] and ivermectin tablets list microcrystalline cellulose, croscarmellose sodium, colloidal silicon dioxide, pregelatinized starch and magnesium stearate in product labels [3] [4]. Coverage in public sources varies by formulation (cream, lotion, tablet, veterinary injection), so you may need the specific product name and/or NDC to locate the exact list [1] [5] [6].
1. Where regulators publish full excipient lists — go to the label
The most direct public source for a complete inactive-ingredient roster for a brand-name human ivermectin product is the official product label or prescribing information hosted on regulatory and label-aggregation sites: DailyMed (the FDA label repository) publishes the full inactive ingredient list for ivermectin cream 1% (benzyl alcohol; citric acid anhydrous; carbomer homopolymer type C; di‑isopropyl adipate; edetate disodium; hexylene glycol; methylparaben; oleyl alcohol; polysorbate 80; propylparaben; purified water; sodium citrate; sodium hydroxide; sorbitan tristearate) [1] [2]. Drugs@FDA / accessdata.fda.gov also holds original labels such as SOOLANTRA (ivermectin cream) with formulation notes [5]. For tablets, the approved label lists the excipients used in tablet cores and coatings (microcrystalline cellulose, croscarmellose sodium, colloidal silicon dioxide, pregelatinized starch, magnesium stearate) in Stromectol/STROMECTOL-type filings [3] [4] [7].
2. Different product = different inactive ingredients — check formulation type
Ivermectin comes in multiple dosage forms (tablets, topical creams, lotions, veterinary injections, pastes) and each has a distinct excipient list. For example, ivermectin lotion’s prescribing information shows a different palette of excipients — butylated hydroxyanisole, castor oil, cetyl alcohol, cyclomethicone, glycerin, methylparaben, oleyl alcohol, propylene glycol, shea butter, etc. — which is not identical to the cream or the tablets [8]. Veterinary injectables and pastes likewise use other solvents and carriers (e.g., AGRI‑MECTIN injection lists 40% glycerol formal and propylene glycol plus 1% ivermectin) [6] [9]. You must identify the exact product name and intended species/use to get the correct list [6] [9].
3. How to find the exact label: product name, NDC, and manufacturer matter
To locate the right label fast, use the brand (SOOLANTRA, STROMECTOL), the manufacturer (Teva, Merck, others), or the NDC/label ID cited on DailyMed/Drugs@FDA. For example, the DailyMed entry for ivermectin cream 1% includes an NDC and manufacturer details and the full inactive list and was revised as recently as 5/2025 [1] [2]. Drugs.com and DrugPatentWatch aggregate similar label data but confirm against the official DailyMed or FDA PDF label for regulatory completeness [10] [11].
4. Aggregators and secondary sources are helpful — but verify against the label
Sites such as Drugs.com, DrugPatentWatch, DrugCentral and DrugBank compile excipient lists and formulation summaries [10] [8] [12] [2]. These can speed a search and show differences across generics and international versions, but you should verify any critical allergy or clinical question against the actual FDA label or manufacturer product insert because aggregators may lag label updates [2] [11].
5. Generics and international versions can differ — read the specific product insert
Generic tablets and generics marketed under different regulatory jurisdictions sometimes use alternate excipients (e.g., pregelatinized maize starch listed for Stromectol in Australia alongside microcrystalline cellulose and butylated hydroxyanisole) [13]. If you need the inactive list for a particular generic manufacturer, seek that manufacturer’s package insert or the national regulator’s database for that product — not just the innovator label [13] [4].
6. If you can’t find it publicly — ask the pharmacist or manufacturer
When public label searches don’t produce the exact list for a lot number or a lesser-known generic, the FDA-approved labels instruct patients to ask their pharmacist or healthcare provider for product‑specific information [2]. Manufacturer medical‑information or pharmacovigilance contacts listed on the label can provide batch-specific excipient information if it is not otherwise published [2] [5].
Limitations and notes: public sources in this set cover multiple human and veterinary ivermectin products and list excipients for common formulations (cream, lotion, tablets, injection) but do not enumerate every global generic or lot-specific variances; for a specific brand/generic and lot, use the product label (DailyMed / FDA), the manufacturer, or your pharmacist for confirmation [1] [3] [6].