Inactive ingredients by manufacturer

Mefenamic Acid inactive ingredients by manufacturer

Wondering whether your Mefenamic Acid 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 Mefenamic Acid 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 4 of the 6 current Mefenamic Acid products on the market today, from 6 companies listing it with the FDA, and lined them up side by side. 1 is 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 Mefenamic Acid? 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 Mefenamic Acid products list lactose, a gluten source, soy, dyes or gelatin?

  1. LactoseEvery checked product

    Every checked Mefenamic Acid product (4) lists lactose. See the products

  2. Wheat or gluten sourceNo checked product

    No checked Mefenamic Acid product lists a wheat or gluten source.

  3. SoyNo checked product

    No checked Mefenamic Acid product lists soy.

  4. Synthetic dyesEvery checked product

    Every checked Mefenamic Acid product (4) lists synthetic dyes. See the products

  5. GelatinEvery checked product

    Every checked Mefenamic Acid product (4) lists gelatin. See the products

Also listed by some products: Titanium dioxide 4 of 4 Carmine or shellac 4 of 4 Propylene glycol 4 of 4

Find a version without it

Every current Mefenamic Acid product and what its label lists

Hide products that list:

ProductListsInactive ingredients on the label
Advanced Rx of Tennessee, LLC 1 product
250 mg capsuleNDC 80425-0423-01 Lactose Synthetic dyes Titanium dioxide Gelatin Carmine or shellac Propylene glycol
Show 12 ingredients

D&C YELLOW NO. 10, FD&C RED NO. 3, FD&C YELLOW NO. 6, FERROSOFERRIC OXIDE, GELATIN, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POTASSIUM HYDROXIDE, PROPYLENE GLYCOL, SHELLAC, SODIUM LAURYL SULFATE, TITANIUM DIOXIDE
Advanced Rx Pharmacy of Tennessee, LLC 1 product
250 mg capsuleNDC 80425-0306-01 No inactive-ingredient list on the label No list we could read
Bryant Ranch Prepack 1 product
250 mg capsuleNDC 72162-2382-03 Lactose Synthetic dyes Titanium dioxide Gelatin Carmine or shellac Propylene glycol
Show 11 ingredients

D&C YELLOW NO. 10, FD&C BLUE NO. 1, FD&C RED NO. 3, FD&C YELLOW NO. 6, FERROSOFERRIC OXIDE, GELATIN, UNSPECIFIED, LACTOSE MONOHYDRATE, PROPYLENE GLYCOL, SHELLAC, SODIUM LAURYL SULFATE, TITANIUM DIOXIDE
Lupin Pharmaceuticals, Inc. 1 product
250 mg capsuleNDC 68180-0185-01 Lactose Synthetic dyes Titanium dioxide Gelatin Carmine or shellac Propylene glycol
Show 12 ingredients

D&C YELLOW NO. 10, FD&C RED NO. 3, FD&C YELLOW NO. 6, FERROSOFERRIC OXIDE, GELATIN, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POTASSIUM HYDROXIDE, PROPYLENE GLYCOL, SHELLAC, SODIUM LAURYL SULFATE, TITANIUM DIOXIDE
Micro Labs Limited 1 product
250 mg capsuleNDC 42571-0258-01 Still being read Not read yet
Misemer Pharmaceuticals, Inc 1 product
250 mg capsuleNDC 00276-0509-30 Lactose Synthetic dyes Titanium dioxide Gelatin Carmine or shellac Propylene glycol
Show 10 ingredients

D&C YELLOW NO. 10, DIMETHICONE, FD&C BLUE NO. 1, FD&C YELLOW NO. 6, FERRIC OXIDE YELLOW, GELATIN, LACTOSE MONOHYDRATE, PROPYLENE GLYCOL, SHELLAC, TITANIUM DIOXIDE

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.

Mefenamic Acid and lactose

Lactose: milk sugar; a concern with lactose intolerance or a milk allergy. Every checked Mefenamic Acid product (4) lists lactose.

Lists lactose

Mefenamic Acid and synthetic dyes

Synthetic dyes: FD&C or D&C colorants and their aluminum lakes. Every checked Mefenamic Acid product (4) lists synthetic dyes.

Lists synthetic dyes

Mefenamic Acid and gelatin

Gelatin: animal-derived (usually bovine or porcine); a concern for vegetarian, kosher or halal needs. Every checked Mefenamic Acid product (4) lists gelatin.

Lists gelatin

Mefenamic Acid and titanium dioxide

Titanium dioxide: A white colorant some people choose to avoid. Every checked Mefenamic Acid product (4) lists titanium dioxide.

Lists titanium dioxide

Mefenamic Acid and carmine or shellac

Carmine or shellac: insect-derived red colorant or coating glaze. Every checked Mefenamic Acid product (4) lists carmine or shellac.

Lists carmine or shellac

Mefenamic Acid and propylene glycol

Propylene glycol: A solvent in liquids and capsules; a concern in kidney disease, for infants, and at high doses. Every checked Mefenamic Acid product (4) lists propylene glycol.

Lists propylene glycol

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 Mefenamic Acid product suits you →

Common questions about Mefenamic Acid inactive ingredients

Is Mefenamic Acid gluten-free?
This page cannot certify any Mefenamic Acid product gluten-free; it reports what each label declares. Of the 4 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 Mefenamic Acid contain lactose?
Every checked Mefenamic Acid product (4) lists lactose on its label. 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 Mefenamic Acid contain soy?
No checked Mefenamic Acid 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 Mefenamic Acid?
Every checked Mefenamic Acid product (4) lists a synthetic dye (an FD&C or D&C colorant) on its label. Colorants often differ by strength within one company's line, so compare the lists above strength by strength.
Does Mefenamic Acid contain gelatin?
Every checked Mefenamic Acid product (4) 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 Mefenamic Acid 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 Mefenamic Acid 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 Mefenamic Acid guide