Zafirlukast inactive ingredients by manufacturer

Name: Zafirlukast Inactive Ingredients by Manufacturer
Creator: HelloPharmacist

Wondering whether your Zafirlukast 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 Zafirlukast 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 12 of the 12 current Zafirlukast products on the market today, from 7 companies listing it with the FDA, and lined them up side by side.

Ask about your bottle

Is there something in your Zafirlukast? 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 Zafirlukast products list lactose, a gluten source, soy, dyes or gelatin?

LactoseEvery checked product

Every checked Zafirlukast product (12) lists lactose. See the products
Wheat or gluten sourceNo checked product

No checked Zafirlukast product lists a wheat or gluten source.
SoyNo checked product

No checked Zafirlukast product lists soy.
Synthetic dyesNo checked product

No checked Zafirlukast product lists synthetic dyes.
GelatinNo checked product

No checked Zafirlukast product lists gelatin.

Also listed by some products: Titanium dioxide 12 of 12 PEG or polysorbate 3 of 12

Find a version without it

Every current Zafirlukast product and what its label lists

Hide products that list:

Product	Lists	Inactive ingredients on the label
American Health Packaging 1 product
20 mg tabletNDC 68084-0059-21	Lactose Titanium dioxide Polyethylene glycol or polysorbate	Show 8 ingredients HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE 2910 (5 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL 400, SODIUM STARCH GLYCOLATE TYPE A POTATO, TITANIUM DIOXIDE
Aurobindo Pharma Limited 2 products
10 mg tabletNDC 59651-0291-60	Lactose Titanium dioxide	Show 8 ingredients CROSCARMELLOSE SODIUM, HYPROMELLOSE 2910 (6 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE 101, MICROCRYSTALLINE CELLULOSE 102, POVIDONE K30, TITANIUM DIOXIDE
20 mg tabletNDC 59651-0292-59	Lactose Titanium dioxide	Show 8 ingredients CROSCARMELLOSE SODIUM, HYPROMELLOSE 2910 (6 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE 101, MICROCRYSTALLINE CELLULOSE 102, POVIDONE K30, TITANIUM DIOXIDE
AvKARE 2 products
10 mg tabletNDC 42291-0970-60	Lactose Titanium dioxide	Show 7 ingredients CELLULOSE, MICROCRYSTALLINE, CROSCARMELLOSE SODIUM, HYPROMELLOSES, LACTOSE, UNSPECIFIED FORM, MAGNESIUM STEARATE, POVIDONE, TITANIUM DIOXIDE
20 mg tabletNDC 42291-0971-60	Lactose Titanium dioxide	Show 7 ingredients CELLULOSE, MICROCRYSTALLINE, CROSCARMELLOSE SODIUM, HYPROMELLOSES, LACTOSE, UNSPECIFIED FORM, MAGNESIUM STEARATE, POVIDONE, TITANIUM DIOXIDE
Bryant Ranch Prepack 1 product
20 mg tabletNDC 72162-2361-06	Lactose Titanium dioxide	Show 7 ingredients CROSCARMELLOSE SODIUM, HYPROMELLOSE 2910 (6 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POVIDONE K30, TITANIUM DIOXIDE
Camber Pharmaceuticals, Inc. 2 products
10 mg tabletNDC 31722-0007-01	Lactose Titanium dioxide	Show 7 ingredients CROSCARMELLOSE SODIUM, HYPROMELLOSE 2910 (6 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POVIDONE K30, TITANIUM DIOXIDE
20 mg tabletNDC 31722-0008-01	Lactose Titanium dioxide	Show 7 ingredients CROSCARMELLOSE SODIUM, HYPROMELLOSE 2910 (6 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POVIDONE K30, TITANIUM DIOXIDE
Dr. Reddys Laboratories Limited 2 products
10 mg tabletNDC 55111-0625-01	Lactose Titanium dioxide Polyethylene glycol or polysorbate	Show 8 ingredients CELLULOSE, MICROCRYSTALLINE, hydroxypropyl cellulose, HYPROMELLOSE 2910 (5 MPA.S), lactose monohydrate, magnesium stearate, polyethylene glycol 400, SODIUM STARCH GLYCOLATE TYPE A POTATO, titanium dioxide
20 mg tabletNDC 55111-0626-01	Lactose Titanium dioxide Polyethylene glycol or polysorbate	Show 8 ingredients CELLULOSE, MICROCRYSTALLINE, hydroxypropyl cellulose, HYPROMELLOSE 2910 (5 MPA.S), lactose monohydrate, magnesium stearate, polyethylene glycol 400, SODIUM STARCH GLYCOLATE TYPE A POTATO, titanium dioxide
Strides Pharma Science Limited 2 products
10 mg tabletNDC 64380-0187-01	Lactose Titanium dioxide	Show 7 ingredients CELLULOSE, MICROCRYSTALLINE, CROSCARMELLOSE SODIUM, HYPROMELLOSES, LACTOSE, UNSPECIFIED FORM, MAGNESIUM STEARATE, POVIDONE, TITANIUM DIOXIDE
20 mg tabletNDC 64380-0188-01	Lactose Titanium dioxide	Show 7 ingredients CELLULOSE, MICROCRYSTALLINE, CROSCARMELLOSE SODIUM, HYPROMELLOSES, LACTOSE, UNSPECIFIED FORM, MAGNESIUM STEARATE, POVIDONE, 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.

Zafirlukast and lactose

Lactose: milk sugar; a concern with lactose intolerance or a milk allergy. Every checked Zafirlukast product (12) lists lactose.

Lists lactose

American Health Packaging: 20 mg tablet
Aurobindo: 10 mg tablet, 20 mg tablet
AvKARE: 10 mg tablet, 20 mg tablet
Bryant Ranch Prepack: 20 mg tablet
Camber: 10 mg tablet, 20 mg tablet
Dr. Reddys: 10 mg tablet, 20 mg tablet
Strides Pharma Science: 10 mg tablet, 20 mg tablet

Zafirlukast and titanium dioxide

Titanium dioxide: A white colorant some people choose to avoid. Every checked Zafirlukast product (12) lists titanium dioxide.

Lists titanium dioxide

American Health Packaging: 20 mg tablet
Aurobindo: 10 mg tablet, 20 mg tablet
AvKARE: 10 mg tablet, 20 mg tablet
Bryant Ranch Prepack: 20 mg tablet
Camber: 10 mg tablet, 20 mg tablet
Dr. Reddys: 10 mg tablet, 20 mg tablet
Strides Pharma Science: 10 mg tablet, 20 mg tablet

Zafirlukast without polyethylene glycol or polysorbate

Polyethylene glycol or polysorbate: PEG, macrogol or polysorbate; a rare cause of allergic reactions. 3 of 12 checked products list polyethylene glycol or polysorbate; 9 do not.

Does not list polyethylene glycol or polysorbate

Aurobindo: 10 mg tablet, 20 mg tablet
AvKARE: 10 mg tablet, 20 mg tablet
Bryant Ranch Prepack: 20 mg tablet
Camber: 10 mg tablet, 20 mg tablet
Strides Pharma Science: 10 mg tablet, 20 mg tablet

Lists polyethylene glycol or polysorbate

American Health Packaging: 20 mg tablet
Dr. Reddys: 10 mg tablet, 20 mg tablet

At the pharmacy counter

How to use this at the pharmacy counter

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.
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.
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.
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 Zafirlukast product suits you →

Common questions about Zafirlukast inactive ingredients

Is Zafirlukast gluten-free?

This page cannot certify any Zafirlukast product gluten-free; it reports what each label declares. Of the 12 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 Zafirlukast contain lactose?

Every checked Zafirlukast product (12) 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 Zafirlukast contain soy?

No checked Zafirlukast 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 Zafirlukast?

No checked Zafirlukast product 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 Zafirlukast contain gelatin?

No checked Zafirlukast 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 Zafirlukast 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 6, 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 Zafirlukast 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 Zafirlukast guide