Inactive ingredients by manufacturer

Potassium Iodide inactive ingredients by manufacturer

Wondering whether your Potassium Iodide 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 Potassium Iodide 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 10 of the 10 current Potassium Iodide products on the market today, from 9 companies listing it with the FDA, and lined them up side by side.

Ask about your bottle

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

  1. LactoseDiffers by manufacturer

    2 of 10 checked products list lactose; 8 do not. See the products

    Does not list it Anbex Atlantic Biologicals Avondale Bryant Ranch Prepack Emerald Therapeutics Mission Pharmacal Nivagen
    Lists it BTG International Inc BTG International Inc.
  2. Wheat or gluten sourceNo checked product

    No checked Potassium Iodide product lists a wheat or gluten source.

  3. SoyNo checked product

    No checked Potassium Iodide product lists soy.

  4. Synthetic dyesDiffers by manufacturer

    1 of 10 checked products list synthetic dyes; 9 do not. See the products

    Does not list it Anbex Atlantic Biologicals Avondale Bryant Ranch Prepack BTG International Inc BTG International Inc. Emerald Therapeutics Nivagen
    Lists it Mission Pharmacal
  5. GelatinNo checked product

    No checked Potassium Iodide product lists gelatin.

Also listed by some products: Propylene glycol 1 of 10 Sugar 1 of 10

Find a version without it

Every current Potassium Iodide product and what its label lists

Hide products that list:

ProductListsInactive ingredients on the label
Anbex Inc. 2 products
65 mg tabletNDC 51803-0002-01 None of these listed
Show 4 ingredients

CELLULOSE, MICROCRYSTALLINE, MAGNESIUM STEARATE, SILICON DIOXIDE, SODIUM THIOSULFATE ANHYDROUS
130 mg tabletNDC 51803-0001-01 None of these listed
Show 4 ingredients

CELLULOSE, MICROCRYSTALLINE, MAGNESIUM STEARATE, SILICON DIOXIDE, SODIUM THIOSULFATE ANHYDROUS
Atlantic Biologicals Corp. 1 product
1 g/mL oral solutionNDC 17856-0114-01 None of these listed
Show 1 ingredient

SODIUM THIOSULFATE
Avondale Pharmaceuticals, LLC 1 product
1 g/mL oral solutionNDC 71740-0112-30 None of these listed
Show 1 ingredient

sodium thiosulfate
Bryant Ranch Prepack 1 product
1 g/mL oral solutionNDC 72162-2423-02 None of these listed
Show 1 ingredient

SODIUM THIOSULFATE
BTG International Inc 1 product
130 mg tabletNDC 50633-0920-20 Lactose
Show 3 ingredients

LACTOSE, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE
BTG International Inc. 1 product
65 mg tabletNDC 50633-0910-20 Lactose
Show 3 ingredients

LACTOSE, UNSPECIFIED FORM, MAGNESIUM STEARATE, MICROCRYSTALLINE CELLULOSE
Emerald Therapeutics, LLC 1 product
1 g/mL oral solutionNDC 72919-0728-30 None of these listed
Show 1 ingredient

SODIUM THIOSULFATE
Mission Pharmacal Company 1 product
65 mg/mL oral solutionNDC 00178-0314-30 Synthetic dyes Propylene glycol Sugar (sucrose, dextrose)
Show 9 ingredients

BLACK RASPBERRY, FD&C BLUE NO. 1, FD&C RED NO. 40, METHYLPARABEN, PROPYLENE GLYCOL, PROPYLPARABEN, SACCHARIN SODIUM, SUCROSE, WATER
Nivagen Pharmaceuticals, Inc. 1 product
1 g/mL oral solutionNDC 75834-0280-08 None of these listed
Show 1 ingredient

SODIUM THIOSULFATE

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.

Potassium Iodide without lactose

Lactose: milk sugar; a concern with lactose intolerance or a milk allergy. 2 of 10 checked products list lactose; 8 do not.

Does not list lactose

Lists lactose

Potassium Iodide without synthetic dyes

Synthetic dyes: FD&C or D&C colorants and their aluminum lakes. 1 of 10 checked products list synthetic dyes; 9 do not.

Does not list synthetic dyes

Lists synthetic dyes

Potassium Iodide without propylene glycol

Propylene glycol: A solvent in liquids and capsules; a concern in kidney disease, for infants, and at high doses. 1 of 10 checked products list propylene glycol; 9 do not.

Does not list propylene glycol

Lists propylene glycol

Potassium Iodide without sugar (sucrose or dextrose)

Sugar (sucrose, dextrose): A consideration in diabetes, mostly in liquids and chewables. 1 of 10 checked products list sugar (sucrose or dextrose); 9 do not.

Does not list sugar (sucrose or dextrose)

Lists sugar (sucrose or dextrose)

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 Potassium Iodide product suits you →

Common questions about Potassium Iodide inactive ingredients

Is Potassium Iodide gluten-free?
This page cannot certify any Potassium Iodide product gluten-free; it reports what each label declares. Of the 10 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 Potassium Iodide contain lactose?
2 of 10 checked Potassium Iodide products list lactose; 8 do not: Anbex (65 mg tablet and 130 mg tablet), Atlantic Biologicals (1 g/mL oral solution), Avondale (1 g/mL oral solution) and Bryant Ranch Prepack (1 g/mL oral solution) and 3 other companies. 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 Potassium Iodide contain soy?
No checked Potassium Iodide 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 Potassium Iodide?
1 of 10 checked Potassium Iodide products list a synthetic dye (an FD&C or D&C colorant); 9 do not: Anbex (65 mg tablet and 130 mg tablet), Atlantic Biologicals (1 g/mL oral solution), Avondale (1 g/mL oral solution) and Bryant Ranch Prepack (1 g/mL oral solution) and 4 other companies. Colorants often differ by strength within one company's line, so compare the lists above strength by strength.
Does Potassium Iodide contain gelatin?
No checked Potassium Iodide 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 Potassium Iodide 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 Potassium Iodide 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 Potassium Iodide guide