Inactive ingredients by manufacturer

Felbamate inactive ingredients by manufacturer

Wondering whether your Felbamate has lactose, gluten, soy, a dye or gelatin in it? The medicine is the same, but the fillers, coatings and colors differ from one company to the next. This page shows what each Felbamate product's FDA label lists, so you can find a version that leaves out what you avoid and ask your pharmacist for it by its NDC.

We have read the FDA labels of 13 of the 22 current Felbamate products on the market today, from 10 companies listing it with the FDA, and lined them up side by side. 8 are still being read and will appear on a later visit. 1 label has no inactive-ingredient list we could read, so that product cannot be compared.

Ask about your bottle

Is there something in your Felbamate? Ask in plain words.

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.

The short answer

Which Felbamate products list lactose, a gluten source, soy, dyes or gelatin?

  1. LactoseDiffers by manufacturer

    10 of 13 checked products list lactose; 3 do not. See the products

    Does not list it Amneal Novitium Sun
    Lists it Amneal Pharmaceuticals of New York ANI Bryant Ranch Prepack Sun Viona Zydus Lifesciences
  2. Wheat or gluten sourceNo checked product

    No checked Felbamate product lists a wheat or gluten source.

  3. SoyNo checked product

    No checked Felbamate product lists soy.

  4. Synthetic dyesDiffers by manufacturer

    8 of 13 checked products list synthetic dyes; 5 do not. See the products

    Does not list it ANI Bryant Ranch Prepack Sun
    Lists it Amneal Amneal Pharmaceuticals of New York Novitium Sun Viona Zydus Lifesciences
  5. GelatinNo checked product

    No checked Felbamate product lists gelatin.

Also listed by some products: Corn 10 of 13 PEG or polysorbate 3 of 13 Sorbitol or mannitol 3 of 13

Find a version without it

Every current Felbamate product and what its label lists

Hide products that list:

ProductListsInactive ingredients on the label
Amneal Pharmaceuticals LLC 3 products
600 mg/5 mL oral suspensionNDC 65162-0686-88 Synthetic dyes Polyethylene glycol or polysorbate Sorbitol or mannitol
Show 11 ingredients

CARBOXYMETHYLCELLULOSE SODIUM, CELLULOSE, MICROCRYSTALLINE, FD&C RED NO. 40, FD&C YELLOW NO. 6, GLYCERIN, METHYLPARABEN, POLYSORBATE 80, PROPYLPARABEN, SACCHARIN SODIUM, SORBITOL, WATER
400 mg tabletNDC 65162-0734-03 Still being read Not read yet
600 mg tabletNDC 65162-0735-03 Still being read Not read yet
Amneal Pharmaceuticals of New York LLC 2 products
400 mg tabletNDC 53746-0734-30 Lactose Corn-derived Synthetic dyes
Show 7 ingredients

CELLULOSE, MICROCRYSTALLINE, CROSCARMELLOSE SODIUM, D&C YELLOW NO. 10, FD&C YELLOW NO. 6, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, STARCH, CORN
600 mg tabletNDC 53746-0735-18 Still being read Not read yet
ANI Pharmaceuticals, Inc. 2 products
400 mg tabletNDC 62559-0730-01 Lactose Corn-derived
Show 6 ingredients

CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, STARCH, CORN
600 mg tabletNDC 62559-0731-01 Lactose Corn-derived
Show 6 ingredients

CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, STARCH, CORN
Bryant Ranch Prepack 4 products
400 mg tabletNDC 72162-1770-01 Lactose Corn-derived
Show 6 ingredients

CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, STARCH, CORN
400 mg tabletNDC 63629-1937-01 Still being read Not read yet
600 mg tabletNDC 63629-1944-01 Still being read Not read yet
600 mg tabletNDC 72162-1771-01 Lactose Corn-derived
Show 6 ingredients

CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, STARCH, CORN
Northstar Rx Llc 1 product
600 mg/5 mL oral suspensionNDC 16714-0775-01 Still being read Not read yet
Novitium Pharma LLC 1 product
600 mg/5 mL oral suspensionNDC 70954-0051-10 Synthetic dyes Polyethylene glycol or polysorbate Sorbitol or mannitol
Show 14 ingredients

BENZOIC ACID, CARBOXYMETHYLCELLULOSE SODIUM, CELLULOSE, MICROCRYSTALLINE, DIMETHICONE, FD&C RED NO. 40, FD&C YELLOW NO. 6, GLYCERIN, METHYLPARABEN, POLYSORBATE 80, PROPYLPARABEN, SACCHARIN SODIUM MONOHYDRATE, SORBIC ACID, SORBITOL, WATER
Sun Pharmaceutical Industries, Inc. 3 products
600 mg/5 mL oral suspensionNDC 51672-4172-01 Synthetic dyes Polyethylene glycol or polysorbate Sorbitol or mannitol
Show 13 ingredients

CARBOXYMETHYLCELLULOSE SODIUM, UNSPECIFIED FORM, CITRIC ACID MONOHYDRATE, DIMETHICONE, FD&C RED NO. 40, FD&C YELLOW NO. 6, GLYCERIN, METHYLPARABEN, MICROCRYSTALLINE CELLULOSE, POLYSORBATE 80, PROPYLPARABEN, SORBITOL, SUCRALOSE, WATER
400 mg tabletNDC 51672-4185-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, STARCH, CORN
600 mg tabletNDC 51672-4186-01 Lactose Corn-derived Synthetic dyes
Show 7 ingredients

ALUMINUM OXIDE, CROSCARMELLOSE SODIUM, D&C YELLOW NO. 10, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, STARCH, CORN
Viatris Specialty LLC 2 products
400 mg tabletNDC 00037-0430-01 Still being read Not read yet
600 mg tabletNDC 00037-0431-01 No inactive-ingredient list on the label No list we could read
Viona Pharmaceuticals Inc 2 products
400 mg tabletNDC 72578-0056-01 Still being read Not read yet
600 mg tabletNDC 72578-0057-01 Lactose Corn-derived Synthetic dyes
Show 11 ingredients

ALUMINUM OXIDE, CELLULOSE, MICROCRYSTALLINE, D&C YELLOW NO. 10, FD&C RED NO. 40, FERRIC OXIDE YELLOW, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE K30, SILICON DIOXIDE, SODIUM STARCH GLYCOLATE TYPE A POTATO, STARCH, CORN
Zydus Lifesciences Limited 2 products
400 mg tabletNDC 70771-1077-01 Lactose Corn-derived Synthetic dyes
Show 10 ingredients

ALUMINUM OXIDE, CELLULOSE, MICROCRYSTALLINE, FD&C RED NO. 40, FERRIC OXIDE YELLOW, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE K30, SILICON DIOXIDE, SODIUM STARCH GLYCOLATE TYPE A POTATO, STARCH, CORN
600 mg tabletNDC 70771-1078-01 Lactose Corn-derived Synthetic dyes
Show 11 ingredients

ALUMINUM OXIDE, CELLULOSE, MICROCRYSTALLINE, D&C YELLOW NO. 10, FD&C RED NO. 40, FERRIC OXIDE YELLOW, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE K30, SILICON DIOXIDE, SODIUM STARCH GLYCOLATE TYPE A POTATO, STARCH, CORN

A product with none of these listed is not certified to be without them: the label says what the manufacturer declared, and the source of a starch or a flavor is often not stated. The companies are the FDA's labelers, which include repackagers and distributors selling another company's product under their own label. The NDC opens the product's own page, with the full label and its inactive-ingredient notes.

Felbamate without lactose

Lactose: milk sugar; a concern with lactose intolerance or a milk allergy. 10 of 13 checked products list lactose; 3 do not.

Does not list lactose

Lists lactose

Felbamate without synthetic dyes

Synthetic dyes: FD&C or D&C colorants and their aluminum lakes. 8 of 13 checked products list synthetic dyes; 5 do not.

Does not list synthetic dyes

Lists synthetic dyes

Felbamate without corn-derived ingredients

Corn-derived: corn starch, maize or corn syrup; a concern with corn allergy. 10 of 13 checked products list corn-derived ingredients; 3 do not.

Does not list corn-derived ingredients

Lists corn-derived ingredients

Felbamate without polyethylene glycol or polysorbate

Polyethylene glycol or polysorbate: PEG, macrogol or polysorbate; a rare cause of allergic reactions. 3 of 13 checked products list polyethylene glycol or polysorbate; 10 do not.

Does not list polyethylene glycol or polysorbate

Lists polyethylene glycol or polysorbate

Felbamate without sorbitol or mannitol

Sorbitol or mannitol: sugar alcohols that can cause bloating or diarrhea in larger amounts. 3 of 13 checked products list sorbitol or mannitol; 10 do not.

Does not list sorbitol or mannitol

Lists sorbitol or mannitol

At the pharmacy counter

How to use this at the pharmacy counter

  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 Felbamate product suits you →

Common questions about Felbamate inactive ingredients

Is Felbamate gluten-free?
This page cannot certify any Felbamate product gluten-free; it reports what each label declares. Of the 13 products checked, none lists a wheat, barley, rye or gluten ingredient, and none lists a starch without a stated source. If you have celiac disease, ask the manufacturer's medical information line for a written gluten statement for the lot you have.
Does Felbamate contain lactose?
10 of 13 checked Felbamate products list lactose; 3 do not: Amneal (600 mg/5 mL oral suspension), Novitium (600 mg/5 mL oral suspension) and Sun (600 mg/5 mL oral suspension). The lactose in a tablet or capsule is a small amount, but people with a milk allergy or a strong intolerance often prefer a version that does not list it.
Does Felbamate contain soy?
No checked Felbamate product lists a soy ingredient (soybean oil or soy lecithin) on its label. Soy lecithin is the usual form and the amount is small, but people with a soy allergy often prefer a version that does not list it.
Is there a dye-free Felbamate?
8 of 13 checked Felbamate products list a synthetic dye (an FD&C or D&C colorant); 5 do not: ANI (400 mg tablet and 600 mg tablet), Bryant Ranch Prepack (400 mg tablet and 600 mg tablet) and Sun (400 mg tablet). Colorants often differ by strength within one company's line, so compare the lists above strength by strength.
Does Felbamate contain gelatin?
No checked Felbamate product lists gelatin on its label. Gelatin is usually bovine or porcine and the label rarely says which; for kosher, halal or vegetarian needs, ask the manufacturer.
Why do the inactive ingredients differ between manufacturers?
A generic must match the brand's active ingredient, strength, dose form and how it is absorbed; its fillers, binders, coatings and colorants are the manufacturer's own choice. That is why one Felbamate product can list lactose and a dye while another from a different company lists neither.
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?
The products are the ones in the FDA's current NDC directory as of October 5, 2026, and each inactive-ingredient list is the manufacturer's FDA label as our label sync last read it. 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 Felbamate products in the FDA's current NDC directory (openFDA), as of October 5, 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 Felbamate guide