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What inactive ingredients are listed on veterinary ivermectin pour-on and paste labels?
Executive summary
Label text for veterinary ivermectin pastes and pour-on products in the provided sources reliably lists the active ingredient (ivermectin 1.87% in many horse pastes) but gives little consistent, publicly posted detail about the full lists of inactive ingredients (excipients) on those veterinary product labels in the search set (active ingredient noted as 1.87% ivermectin) [1] [2] [3]. Some manufacturer pages and SDSs mention flavoring or paste characteristics (e.g., “apple flavored,” “clean white homogeneous paste”) but do not publish a standardized, itemized inactive-ingredient statement in the documents provided here [4] [5] [6].
1. Labels consistently highlight ivermectin strength and dosing, not full excipient lists
Multiple product pages and official label records in the search results emphasize ivermectin as the declared active ingredient (commonly 1.87% for equine pastes) and give dose guidance (one syringe treats a 1250 lb horse at ~200 mcg/kg) rather than enumerating a full inactive-ingredient roster [1] [2] [6] [3]. DailyMed and manufacturer product pages are focused on indications, dosing, precautions and environmental warnings rather than presenting a detailed excipient breakdown on the publicly displayed label extracts [2] [3].
2. Some documents indirectly reveal formulation attributes or single excipient mentions
A safety data sheet (SDS) and product marketing pages provide formulation clues: the Bimectin SDS exists for an ivermectin paste and includes a “composition/information on ingredients” section (suggesting excipient details may be in the SDS itself), but the snippet set here does not reproduce an itemized inactive-ingredient list [5]. Marketing/product pages sometimes note palatability features such as “apple flavored and scented” or describe the paste as “clean, white, homogeneous,” which implies flavoring agents, pigments or carriers are present though not named in these excerpts [4] [6].
3. Public-facing labels vary by manufacturer and are not uniformly published in these sources
Different brands appear in the results—Durvet/Duramectin, Santa Cruz (Zimecterin), Panomec, Bimectin/Dechra—each showing the same active concentration but public pages differ in the depth of label detail posted online; some give full prescribing information or DailyMed entries (likely to include full label text), while others provide only marketing summaries that omit excipient lists [7] [8] [6] [9]. The available excerpts do not present a consolidated, standard inactive-ingredient list for pour-on solutions or pastes across manufacturers.
4. Why people ask: concern about non-drug ingredients if used by humans
Public-health advisories and poison-control commentary note that veterinary formulations include inactive ingredients “not well studied in humans” and that those excipients can be harmful if veterinary products are ingested by people, which is why the absence of clearly published excipient lists is consequential for misuse risk assessment [10]. The Poison Control guidance explicitly warns that veterinary pastes/topicals may contain inactive ingredients that in large amounts could be toxic to humans [10].
5. Where to find the precise inactive-ingredient lists (what the sources imply)
The most reliable places to obtain itemized excipient lists are (a) the full DailyMed label or drug-package insert for a given marketed product (some DailyMed entries exist for ivermectin pastes in the search set and may contain full ingredient sections), (b) the manufacturer’s full prescribing information or product datasheet, and (c) the SDS where composition sections often list excipients; the SDS referenced here likely contains more composition detail though the snippet does not list them [2] [3] [5].
6. Practical next steps if you need exact ingredient names now
Request the full DailyMed package insert for the exact brand and NDC (DailyMed links exist in the dataset) or ask the specific manufacturer for its product’s ingredient statement or SDS: DailyMed entries and manufacturer product pages in the results show which brands to follow up on (e.g., Duravet/Duramectin, Santa Cruz/Zimecterin, Panomec, Bimectin) [2] [7] [8] [4] [6]. The SDS for a product (such as the Bimectin SDS appearing in the search results) is likely to contain the itemized inactive materials [5].
Limitations and caveats: the search results you provided do not include a clear, verbatim list of inactive (non-active) ingredients from any single veterinary ivermectin pour-on or paste label in full; therefore I have not asserted ingredient names that are not shown in these sources and have pointed to where the full ingredient lists are likely to appear [5] [2] [3] [6].