Inactive ingredients by manufacturer

Azathioprine inactive ingredients by manufacturer

Wondering whether your Azathioprine 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 Azathioprine 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 29 of the 34 current Azathioprine products on the market today, from 19 companies listing it with the FDA, and lined them up side by side. 5 are still being read and will appear on a later visit.

Ask about your bottle

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

  1. LactoseDiffers by manufacturer

    28 of 29 checked products list lactose; 1 does not. See the products

    Does not list it Hikma
    Lists it American Health Packaging Amneal Ascend AvKARE Glenmark Golden State Medical Supply Legacy NuCare Pharmaceuticals,Inc. Oceanside PD-Rx Rising Sebela Zydus Zydus Lifesciences
  2. Wheat or gluten sourceNo checked product

    No checked Azathioprine product lists a wheat or gluten source.

  3. SoyNo checked product

    No checked Azathioprine product lists soy.

  4. Synthetic dyesNo checked product

    No checked Azathioprine product lists synthetic dyes.

  5. GelatinNo checked product

    No checked Azathioprine product lists gelatin.

Also listed by some products: Corn 26 of 29

Find a version without it

Every current Azathioprine product and what its label lists

Hide products that list:

ProductListsInactive ingredients on the label
American Health Packaging 1 product
50 mg tabletNDC 68084-0229-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, UNSPECIFIED, STARCH, CORN
Amneal Pharmaceuticals NY LLC 4 products
50 mg tabletNDC 69238-1076-01 Lactose Corn-derived
Show 5 ingredients

ANHYDROUS LACTOSE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN, STEARIC ACID
50 mg tabletNDC 60219-1076-01 Lactose Corn-derived
Show 5 ingredients

ANHYDROUS LACTOSE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN, STEARIC ACID
75 mg tabletNDC 60219-2036-01 Lactose Corn-derived
Show 5 ingredients

ANHYDROUS LACTOSE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN, STEARIC ACID
100 mg tabletNDC 60219-2037-01 Lactose Corn-derived
Show 5 ingredients

ANHYDROUS LACTOSE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN, STEARIC ACID
Aphena Pharma Solutions - Tennessee, LLC 1 product
50 mg tabletNDC 71610-0124-09 Still being read Not read yet
Ascend Laboratories, LLC 4 products
25 mg tabletNDC 67877-0492-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE K30, STARCH, CORN
50 mg tabletNDC 67877-0493-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE K30, STARCH, CORN
75 mg tabletNDC 67877-0494-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE K30, STARCH, CORN
100 mg tabletNDC 67877-0495-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE K30, STARCH, CORN
AvKARE 2 products
50 mg tabletNDC 42291-0071-01 Lactose Corn-derived
Show 5 ingredients

ANHYDROUS LACTOSE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN, STEARIC ACID
100 mg tabletNDC 42291-0063-01 Lactose Corn-derived
Show 5 ingredients

ANHYDROUS LACTOSE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN, STEARIC ACID
Glenmark Pharmaceuticals, Inc 1 product
50 mg tabletNDC 68462-0502-01 Lactose Corn-derived
Show 5 ingredients

LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, UNSPECIFIED, STARCH, CORN, STEARIC ACID
Golden State Medical Supply, Inc. 1 product
50 mg tabletNDC 51407-0182-01 Lactose Corn-derived
Show 5 ingredients

LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN, STEARIC ACID
Hikma Pharmaceuticals USA Inc. 1 product
100 mg/10 mL injectionNDC 00143-9566-01 None of these listed
Show 2 ingredients

HYDROCHLORIC ACID, SODIUM HYDROXIDE
Legacy Pharma USA Inc. 1 product
50 mg tabletNDC 83107-0025-10 Lactose
Show 5 ingredients

LACTOSE, MAGNESIUM STEARATE, POVIDONE, STARCH, POTATO, STEARIC ACID
NuCare Pharmaceuticals, Inc. 1 product
50 mg tabletNDC 68071-3772-06 Still being read Not read yet
NuCare Pharmaceuticals,Inc. 1 product
50 mg tabletNDC 68071-3997-06 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE K30, STARCH, CORN
Oceanside Pharmaceuticals 2 products
75 mg tabletNDC 68682-0231-01 Lactose Corn-derived
Show 5 ingredients

LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, UNSPECIFIED, STARCH, CORN, STEARIC ACID
100 mg tabletNDC 68682-0241-01 Lactose Corn-derived
Show 5 ingredients

LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, UNSPECIFIED, STARCH, CORN, STEARIC ACID
PD-Rx Pharmaceuticals, Inc. 1 product
50 mg tabletNDC 72789-0129-30 Lactose Corn-derived
Show 5 ingredients

ANHYDROUS LACTOSE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN, STEARIC ACID
Remedyrepack Inc. 1 product
50 mg tabletNDC 70518-3544-00 Still being read Not read yet
Rising Pharma Holdings, Inc. 1 product
50 mg tabletNDC 16571-0835-01 Lactose Corn-derived
Show 5 ingredients

LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE K30, STARCH, CORN, STEARIC ACID
Salix Pharmaceuticals 2 products
75 mg tabletNDC 65649-0231-41 Still being read Not read yet
100 mg tabletNDC 65649-0241-41 Still being read Not read yet
Sebela Pharmaceuticals Inc. 1 product
50 mg tabletNDC 54766-0590-10 Lactose
Show 5 ingredients

LACTOSE, MAGNESIUM STEARATE, POVIDONE, STARCH, POTATO, STEARIC ACID
Zydus Pharmaceuticals USA Inc. 4 products
25 mg tabletNDC 68382-0118-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN
50 mg tabletNDC 68382-0003-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN
75 mg tabletNDC 68382-0119-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN
100 mg tabletNDC 68382-0120-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN
Zydus Lifesciences Limited 4 products
25 mg tabletNDC 70771-1139-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN
50 mg tabletNDC 65841-0602-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN
75 mg tabletNDC 70771-1140-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, STARCH, CORN
100 mg tabletNDC 70771-1141-01 Lactose Corn-derived
Show 5 ingredients

CROSCARMELLOSE SODIUM, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POVIDONE, 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.

Azathioprine without lactose

Lactose: milk sugar; a concern with lactose intolerance or a milk allergy. 28 of 29 checked products list lactose; 1 does not.

Does not list lactose

Lists lactose

Azathioprine without corn-derived ingredients

Corn-derived: corn starch, maize or corn syrup; a concern with corn allergy. 26 of 29 checked products list corn-derived ingredients; 3 do not.

Does not list corn-derived ingredients

Lists corn-derived ingredients

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 Azathioprine product suits you →

Common questions about Azathioprine inactive ingredients

Is Azathioprine gluten-free?
This page cannot certify any Azathioprine product gluten-free; it reports what each label declares. Of the 29 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 Azathioprine contain lactose?
28 of 29 checked Azathioprine products list lactose; 1 does not: Hikma (100 mg/10 mL injection). 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 Azathioprine contain soy?
No checked Azathioprine 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 Azathioprine?
No checked Azathioprine 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 Azathioprine contain gelatin?
No checked Azathioprine 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 Azathioprine 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 Azathioprine 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 Azathioprine guide