Inactive ingredients by manufacturer

Naltrexone inactive ingredients by manufacturer

Wondering whether your Naltrexone 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 Naltrexone 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 35 of the 48 current Naltrexone products on the market today, from 23 companies listing it with the FDA, and lined them up side by side. 10 are still being read and will appear on a later visit. 3 labels have no inactive-ingredient list we could read, so those products cannot be compared.

Ask about your bottle

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

  1. LactoseEvery checked product

    Every checked Naltrexone product (35) lists lactose. See the products

  2. Wheat or gluten sourceNo checked product

    No checked Naltrexone product lists a wheat or gluten source.

  3. SoyNo checked product

    No checked Naltrexone product lists soy.

  4. Synthetic dyesNo checked product

    No checked Naltrexone product lists synthetic dyes.

  5. GelatinNo checked product

    No checked Naltrexone product lists gelatin.

Also listed by some products: Titanium dioxide 34 of 35 PEG or polysorbate 35 of 35

Find a version without it

Every current Naltrexone product and what its label lists

Hide products that list:

ProductListsInactive ingredients on the label
A-S Medication Solutions 2 products
50 mg tabletNDC 50090-4925-00 Still being read Not read yet
50 mg tabletNDC 50090-6820-00 Lactose Polyethylene glycol or polysorbate
Show 11 ingredients

CI 77891, CROSPOVIDONE (120 .MU.M), FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYDROXYPROPYL METHYLCELLULOSE, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, POLYSORBATE 80, SILICON DIOXIDE
Accord Healthcare, Inc. 1 product
50 mg tabletNDC 16729-0081-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CELLULOSE, MICROCRYSTALLINE, CROSPOVIDONE, FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSES, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POLYETHYLENE GLYCOL 400, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
Alkermes, Inc. 2 products
kitsNDC 65757-0300-01 No inactive-ingredient list on the label No list we could read
kitsNDC 65757-0301-01 No inactive-ingredient list on the label No list we could read
American Health Packaging 1 product
50 mg tabletNDC 68084-0291-21 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CROSPOVIDONE (120 .MU.M), FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE, UNSPECIFIED, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
Amneal Pharmaceuticals NY LLC 1 product
kitsNDC 69238-2794-01 No inactive-ingredient list on the label No list we could read
Aphena Pharma Solutions - Tennessee, LLC 4 products
50 mg tabletNDC 53401-0023-30 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CELLULOSE, MICROCRYSTALLINE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSES, MAGNESIUM STEARATE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 53401-0008-31 Still being read Not read yet
50 mg tabletNDC 71610-0919-31 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CROSPOVIDONE (15 MPA.S AT 5%), FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE, UNSPECIFIED, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71610-0964-31 Still being read Not read yet
AvKARE 1 product
50 mg tabletNDC 42291-0632-30 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
Bryant Ranch Prepack 18 products
50 mg tabletNDC 71335-2481-01 Still being read Not read yet
50 mg tabletNDC 71335-1480-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CROSPOVIDONE (120 .MU.M), FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE, UNSPECIFIED, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-2062-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CROSPOVIDONE (120 .MU.M), FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE 2910 (6 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL 400, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-2419-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-2480-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-0014-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CROSPOVIDONE (120 .MU.M), FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE, UNSPECIFIED, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL 400, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-3040-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-3039-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-2743-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-3012-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-3011-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-2987-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 63629-1047-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 72162-2529-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 72162-2311-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 72162-2154-03 Still being read Not read yet
50 mg tabletNDC 72162-1566-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 71335-3104-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
Chartwell RX, LLC 1 product
50 mg tabletNDC 62135-0242-30 Still being read Not read yet
Coupler LLC 2 products
50 mg tabletNDC 67046-0306-03 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CELLULOSE, MICROCRYSTALLINE, CROSPOVIDONE, FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE 2910 (6 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POLYETHYLENE GLYCOL 400, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 67046-0060-03 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
Elite Laboratories, Inc. 1 product
50 mg tabletNDC 64850-0300-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

anhydrous lactose, Cellulose, Microcrystalline, croscarmellose sodium, ferric oxide yellow, Hydroxypropyl Cellulose (1600000 Wamw), Hypromelloses, magnesium stearate, polyethylene glycol, unspecified, silicon dioxide, titanium dioxide
Golden State Medical Supply, Inc. 1 product
50 mg tabletNDC 51407-0959-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CROSPOVIDONE (15 MPA.S AT 5%), FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE, UNSPECIFIED, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
Heritage Pharmaceuticals Inc d/b/a Avet Pharmaceuticals Inc 1 product
50 mg tabletNDC 23155-0886-01 Still being read Not read yet
Major Pharmaceuticals 1 product
50 mg tabletNDC 00904-7036-04 Still being read Not read yet
NCS HealthCare of KY, LLC dba Vangard Labs 1 product
50 mg tabletNDC 00615-8579-39 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CELLULOSE, MICROCRYSTALLINE, CROSPOVIDONE, FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE 2910 (6 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POLYETHYLENE GLYCOL 400, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
NuCare Pharmaceuticals Inc. 1 product
50 mg tabletNDC 68071-3654-03 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
Precision Dose Inc. 2 products
50 mg tabletNDC 68094-0909-30 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

anhydrous lactose, croscarmellose sodium, ferric oxide yellow, Hydroxypropyl Cellulose (1600000 Wamw), hypromellose, unspecified, magnesium stearate, microcrystalline cellulose, polyethylene glycol, unspecified, silicon dioxide, titanium dioxide
50 mg tabletNDC 68094-0853-61 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

anhydrous lactose, croscarmellose sodium, ferric oxide yellow, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, magnesium stearate, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, silicon dioxide, titanium dioxide
Proficient Rx LP 1 product
50 mg tabletNDC 82804-0199-30 Still being read Not read yet
Redpharm Drug 1 product
50 mg tabletNDC 67296-2282-09 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CELLULOSE, MICROCRYSTALLINE, CROSPOVIDONE, FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSES, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POLYETHYLENE GLYCOL 400, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
Remedyrepack Inc. 2 products
50 mg tabletNDC 70518-4344-00 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 10 ingredients

ANHYDROUS LACTOSE, CROSCARMELLOSE SODIUM, FERRIC OXIDE YELLOW, HYDROXYPROPYL CELLULOSE (1600000 WAMW), HYPROMELLOSE, UNSPECIFIED, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, SILICON DIOXIDE, TITANIUM DIOXIDE
50 mg tabletNDC 70518-2718-00 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CELLULOSE, MICROCRYSTALLINE, CROSPOVIDONE, FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE 2910 (6 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POLYETHYLENE GLYCOL 400, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
SpecGx LLC 1 product
50 mg tabletNDC 00406-1170-01 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CROSPOVIDONE (15 MPA.S AT 5%), FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE, UNSPECIFIED, LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE, POLYETHYLENE GLYCOL, UNSPECIFIED, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
Sun Pharmaceutical Industries, Inc. 1 product
50 mg tabletNDC 47335-0326-08 Lactose Titanium dioxide Polyethylene glycol or polysorbate
Show 11 ingredients

CELLULOSE, MICROCRYSTALLINE, CROSPOVIDONE, FERRIC OXIDE RED, FERRIC OXIDE YELLOW, HYPROMELLOSE 2910 (6 MPA.S), LACTOSE MONOHYDRATE, MAGNESIUM STEARATE, POLYETHYLENE GLYCOL 400, POLYSORBATE 80, SILICON DIOXIDE, TITANIUM DIOXIDE
TAGI Pharma Inc. 1 product
50 mg tabletNDC 51224-0206-30 Still being read Not read yet

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.

Naltrexone and lactose

Lactose: milk sugar; a concern with lactose intolerance or a milk allergy. Every checked Naltrexone product (35) lists lactose.

Lists lactose

Naltrexone without titanium dioxide

Titanium dioxide: A white colorant some people choose to avoid. 34 of 35 checked products list titanium dioxide; 1 does not.

Does not list titanium dioxide

Lists titanium dioxide

Naltrexone and polyethylene glycol or polysorbate

Polyethylene glycol or polysorbate: PEG, macrogol or polysorbate; a rare cause of allergic reactions. Every checked Naltrexone product (35) lists polyethylene glycol or polysorbate.

Lists polyethylene glycol or polysorbate

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 Naltrexone product suits you →

Common questions about Naltrexone inactive ingredients

Is Naltrexone gluten-free?
This page cannot certify any Naltrexone product gluten-free; it reports what each label declares. Of the 35 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 Naltrexone contain lactose?
Every checked Naltrexone product (35) 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 Naltrexone contain soy?
No checked Naltrexone 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 Naltrexone?
No checked Naltrexone 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 Naltrexone contain gelatin?
No checked Naltrexone 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 Naltrexone 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 Naltrexone 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 Naltrexone guide