Fomepizole Inactive Ingredients by Manufacturer

Wondering whether your Fomepizole has lactose, gluten, soy, a dye or gelatin in it?

  • Lactose
  • Gluten source
  • Soy
  • Dyes
  • Gelatin

Same medicine, different fillers. The coatings, colors and fillers differ from one company to the next. This page shows what each Fomepizole product's FDA label lists, so you can pick a version that leaves out what you avoid.

  1. 1Find your product
  2. 2See what its label lists
  3. 3Ask for it by its NDC
0FDA labels read
0companies compared
Dr. Brian Staiger, PharmD, BCPS
Curated and coded by , clinical pharmacist Updated October 6, 2026 · how this page is built
Don’t see your specific product? Ask us

Answers from the FDA labels

Ask About the Inactive Ingredients in Your Fomepizole

Name the company, strength or the NDC on your bottle and the ingredient you avoid. The answer comes only from the FDA labels on this page.

Answers are drawn from the FDA label data on this page and checked against it. They are not medical advice: confirm with your pharmacist before relying on them.

Check your bottle

Look Up Your Fomepizole by NDC, Company or Strength

Pick your bottle and tap what you want to check. The answer comes from that product's own FDA label, which is already on this page.

1 Which bottle do you have?

Or tap your way to it: the form, then the strength, then the company.

Form

2 What do you want to check?

Nothing tapped? We check the five big ones.

  • Listed on the labelthe company names it.
  • Not listedthe label does not name it.
  • Source unclearthe label names a starch or maltodextrin without saying what plant it came from.
  • Still being readwe have not finished this label yet.
Fomepizole Your bottle Pick a product and this label fills in.

Pick your bottle to read its label, or tap an ingredient to see which Fomepizole products leave it out.

Summary of all Fomepizole products

The checker above looks at one bottle. This is every current Fomepizole product at once.

Which Fomepizole Products List Lactose, a Gluten Source, Soy, Dyes or Gelatin?

  1. LactoseNot checked yet

    No label has been read yet.

  2. Wheat or gluten sourceNot checked yet

    No label has been read yet.

  3. SoyNot checked yet

    No label has been read yet.

  4. Synthetic dyesNot checked yet

    No label has been read yet.

  5. GelatinNot checked yet

    No label has been read yet.

Details of all Fomepizole products

Every current Fomepizole product, grouped by strength and form. Open one to see each company's NDC, package sizes and full inactive-ingredient list.

Find a version without it

Every Current Fomepizole Product and What Its Label Lists

Fastest way: search by NDC. It is printed on your bottle's pharmacy label. If it is not, call your pharmacy: they have it on record.

No label has been read yet.

Fomepizole 1 g/mL injection 5 companies
CompanyListsInactive ingredients on the label
American RegentNDC 00517-0710-01 Same product, other package sizes: 00517-0710-88 (carton / 1.5 ml in 1 vial of 1 vial) No inactive-ingredient list on the label No list we could read
GlandNDC 68083-0510-01 No inactive-ingredient list on the label No list we could read
Mylan InstitutionalNDC 67457-0211-02 No inactive-ingredient list on the label No list we could read
NavintaNDC 68475-0510-01 No inactive-ingredient list on the label No list we could read
ZydusNDC 70710-1478-01 No inactive-ingredient list on the label No list we could read
Fomepizole 1.5 g/1.5 mL injection 1 company
CompanyListsInactive ingredients on the label
SagentNDC 25021-0829-02 No inactive-ingredient list on the label No list we could read

A product with none of these on its label may still contain them. The label shows only what the company listed, and it often does not say where a starch or a flavor comes from. Some companies here repackage or sell another company's product under their own name. Tap an NDC to open that product's page with its full label.

At the pharmacy counter

How to Get the Version You Want at the Pharmacy

  1. Pick the company whose list suits you and copy the NDC from the table. Many pharmacies order from wholesalers that carry several companies' versions and can request a particular one if you ask before the prescription is filled; some buy from one contracted source only, and a few insurance plans cover only certain NDCs, so ask the pharmacist to check.
  2. Treat "does not list" as exactly that. The label is what the manufacturer declared; a flavor or a starch may have an unstated source, and lines change. For celiac disease or a serious allergy, ask the manufacturer's medical information line for a written statement about the lot you have.
  3. Check the bottle each refill. A different company usually means a different shape, color and inactive-ingredient list; the pharmacist can tell you who made it, and the two-NDC comparison shows the difference line by line.
  4. If you need one company's version kept constant, ask your prescriber to write that company or the NDC on the prescription and tell the pharmacy you need it held. Rules vary by state and plan, so confirm with the pharmacist.
Ask Dr. Staiger which Fomepizole product suits you →

Common Questions About Fomepizole Inactive Ingredients

Why do the inactive ingredients differ between manufacturers?
A generic must match the brand's active ingredient, strength and dose form. For injectable, ophthalmic and otic products the FDA generally requires the inactive ingredients to match the reference product as well, so the lists on this page differ less than they do for tablets and capsules; the differences that remain come from the exact product and container each company files.
What can a label not tell me?
A label tells you every inactive ingredient the company names for that product. It cannot tell you where an unnamed flavor, starch or maltodextrin came from, whether traces come from shared equipment, or about a change made after our last read of the label (October 6, 2026). Your pharmacist can check with the manufacturer.
Who decides what counts as a gluten source, a dye or soy on this page?
Dr. Brian Staiger, PharmD, BCPS, a clinical pharmacist, wrote and maintains the classification this page applies: which ingredient names count as a lactose, wheat or gluten, soy, synthetic dye or gelatin source, and which read as "source not stated" (bare starch or maltodextrin). The ingredient lists themselves are the manufacturers' own FDA labels, shown as filed; nothing is added to or removed from a label.
The NDC on my bottle ends differently from the one on this page. Is it the same product?
Usually, yes. An NDC has three parts: the company, the product (the medicine, strength and form) and, last, the package size. Two codes that share the first two parts are the same product in different pack sizes, and a label belongs to the product, so every pack size shares one inactive-ingredient list. Each product on this page lists every pack size the FDA directory holds for it, and the NDC search accepts any of them.
Can my pharmacy give me a specific manufacturer's version?
Often, if you ask before the prescription is filled: many pharmacies order from wholesalers that carry several companies' versions and can request a particular one. Some pharmacies buy a generic from one contracted source only, and a few insurance plans cover only certain NDCs, so ask the pharmacist to check. Give them the NDC from this page; the company name alone is often enough.
How current is this list?
We have read the FDA labels of 0 of the 6 current Fomepizole products on the market today, from 6 companies listing it with the FDA, and lined them up side by side. 6 labels have no inactive-ingredient list we could read, so those products cannot be compared. The products are the ones in the FDA's current NDC directory as of October 6, 2026. The list is rebuilt every day, the FDA directory is re-imported every week, and each inactive-ingredient list is the manufacturer's FDA label as our label sync last read it, re-read when the FDA publishes a new version. Formulations change, so check the label on your own bottle and ask your pharmacist if a refill looks different.

Sources: the products are the finished Fomepizole products in the FDA's current NDC directory (openFDA), as of October 6, 2026; each inactive-ingredient list is the manufacturer's FDA Structured Product Label via DailyMed, as our label sync last read it. The concern groups are HelloPharmacist's classification of the names the label declares. Educational information only, not medical advice; confirm with your pharmacist before relying on a list. ← Back to the Fomepizole guide