Inactive ingredients by manufacturer

Phentermine and Topiramate inactive ingredients by manufacturer

Wondering whether your Phentermine and Topiramate 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 Phentermine and Topiramate 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 8 of the 16 current Phentermine and Topiramate products on the market today, from 4 companies listing it with the FDA, and lined them up side by side. 8 are still being read and will appear on a later visit.

Ask about your bottle

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

  1. LactoseNo checked product

    No checked Phentermine and Topiramate product lists lactose.

  2. Wheat or gluten sourceNo checked product

    No checked Phentermine and Topiramate product lists a wheat or gluten source.

  3. SoyNo checked product

    No checked Phentermine and Topiramate product lists soy.

  4. Synthetic dyesDiffers by manufacturer

    7 of 8 checked products list synthetic dyes; 1 does not. See the products

    Does not list it Teva
    Lists it Dr.Reddys Prasco Vivus
  5. GelatinEvery checked product

    Every checked Phentermine and Topiramate product (8) lists gelatin. See the products

Also listed by some products: Corn 7 of 8 Tartrazine 4 of 8 Titanium dioxide 8 of 8 Carmine or shellac 1 of 8 Propylene glycol 1 of 8 PEG or polysorbate 1 of 8 Sugar 7 of 8

Find a version without it

Every current Phentermine and Topiramate product and what its label lists

Hide products that list:

ProductListsInactive ingredients on the label
Dr.Reddys Laboratories Inc 4 products
PHENTERMINE HYDROCHLORIDE 3.75 mg/1; TOPIRAMATE 23 mg capsuleNDC 43598-0624-30 Still being read Not read yet
PHENTERMINE HYDROCHLORIDE 7.5 mg/1; TOPIRAMATE 46 mg capsuleNDC 43598-0625-30 Still being read Not read yet
PHENTERMINE HYDROCHLORIDE 11.25 mg/1; TOPIRAMATE 69 mg capsuleNDC 43598-0626-30 Still being read Not read yet
PHENTERMINE HYDROCHLORIDE 15 mg/1; TOPIRAMATE 92 mg capsuleNDC 43598-0627-30 Synthetic dyes Titanium dioxide Gelatin
Show 9 ingredients

Cellulose, Microcrystalline, D&C Red No. 28, Ethylcellulose (10 Mpa.S), Fd&C Yellow No. 6, Gelatin, Hydroxypropyl Cellulose (90000 Wamw), Hypromellose 2208 (3 Mpa.S), Talc, Titanium Dioxide
Prasco Laboratories 4 products
PHENTERMINE HYDROCHLORIDE 3.75 mg/1; TOPIRAMATE 23 mg extended-release capsuleNDC 66993-0780-30 Corn-derived Synthetic dyes Titanium dioxide Gelatin Sugar (sucrose, dextrose)
Show 10 ingredients

ETHYLCELLULOSE, UNSPECIFIED, FD&C BLUE NO. 1, FD&C RED NO. 3, GELATIN, UNSPECIFIED, MICROCRYSTALLINE CELLULOSE, POVIDONE K30, STARCH, CORN, SUCROSE, TALC, TITANIUM DIOXIDE
PHENTERMINE HYDROCHLORIDE 7.5 mg/1; TOPIRAMATE 46 mg extended-release capsuleNDC 66993-0781-30 Corn-derived Synthetic dyes Tartrazine (FD&C Yellow No. 5) Titanium dioxide Gelatin Sugar (sucrose, dextrose)
Show 12 ingredients

ETHYLCELLULOSE, UNSPECIFIED, FD&C BLUE NO. 1, FD&C RED NO. 3, FD&C YELLOW NO. 5, FD&C YELLOW NO. 6, GELATIN, UNSPECIFIED, MICROCRYSTALLINE CELLULOSE, POVIDONE K30, STARCH, CORN, SUCROSE, TALC, TITANIUM DIOXIDE
PHENTERMINE HYDROCHLORIDE 11.25 mg/1; TOPIRAMATE 69 mg extended-release capsuleNDC 66993-0782-30 Still being read Not read yet
PHENTERMINE HYDROCHLORIDE 15 mg/1; TOPIRAMATE 92 mg extended-release capsuleNDC 66993-0783-30 Corn-derived Synthetic dyes Tartrazine (FD&C Yellow No. 5) Titanium dioxide Gelatin Sugar (sucrose, dextrose)
Show 10 ingredients

ETHYLCELLULOSE, UNSPECIFIED, FD&C YELLOW NO. 5, FD&C YELLOW NO. 6, GELATIN, UNSPECIFIED, MICROCRYSTALLINE CELLULOSE, POVIDONE K30, STARCH, CORN, SUCROSE, TALC, TITANIUM DIOXIDE
Teva Pharmaceuticals, Inc. 4 products
PHENTERMINE HYDROCHLORIDE 3.75 mg/1; TOPIRAMATE 23 mg extended-release capsuleNDC 00480-3297-56 Still being read Not read yet
PHENTERMINE HYDROCHLORIDE 7.5 mg/1; TOPIRAMATE 46 mg extended-release capsuleNDC 00480-3296-56 Still being read Not read yet
PHENTERMINE HYDROCHLORIDE 11.25 mg/1; TOPIRAMATE 69 mg extended-release capsuleNDC 00480-2299-56 Corn-derived Titanium dioxide Gelatin Carmine or shellac Propylene glycol Polyethylene glycol or polysorbate Sugar (sucrose, dextrose)
Show 17 ingredients

AMMONIA, COPOVIDONE K25-31, ETHYLCELLULOSES, FERRIC OXIDE YELLOW, FERROSOFERRIC OXIDE, GELATIN, HYPROMELLOSE 2910 (5 MPA.S), MICROCRYSTALLINE CELLULOSE, POLYSORBATE 80, POVIDONE K30, PROPYLENE GLYCOL, SHELLAC, SILICON DIOXIDE, STARCH, CORN, SUCROSE, TALC, TITANIUM DIOXIDE
PHENTERMINE HYDROCHLORIDE 15 mg/1; TOPIRAMATE 92 mg extended-release capsuleNDC 00480-3295-56 Still being read Not read yet
Vivus LLC 4 products
PHENTERMINE HYDROCHLORIDE 3.75 mg/1; TOPIRAMATE 23 mg extended-release capsuleNDC 62541-0201-14 Corn-derived Synthetic dyes Titanium dioxide Gelatin Sugar (sucrose, dextrose)
Show 10 ingredients

ETHYLCELLULOSE, UNSPECIFIED, FD&C BLUE NO. 1, FD&C RED NO. 3, GELATIN, UNSPECIFIED, MICROCRYSTALLINE CELLULOSE, POVIDONE K30, STARCH, CORN, SUCROSE, TALC, TITANIUM DIOXIDE
PHENTERMINE HYDROCHLORIDE 7.5 mg/1; TOPIRAMATE 46 mg extended-release capsuleNDC 62541-0202-30 Corn-derived Synthetic dyes Tartrazine (FD&C Yellow No. 5) Titanium dioxide Gelatin Sugar (sucrose, dextrose)
Show 12 ingredients

ETHYLCELLULOSE, UNSPECIFIED, FD&C BLUE NO. 1, FD&C RED NO. 3, FD&C YELLOW NO. 5, FD&C YELLOW NO. 6, GELATIN, UNSPECIFIED, MICROCRYSTALLINE CELLULOSE, POVIDONE K30, STARCH, CORN, SUCROSE, TALC, TITANIUM DIOXIDE
PHENTERMINE HYDROCHLORIDE 11.25 mg/1; TOPIRAMATE 69 mg extended-release capsuleNDC 62541-0203-30 Still being read Not read yet
PHENTERMINE HYDROCHLORIDE 15 mg/1; TOPIRAMATE 92 mg extended-release capsuleNDC 62541-0204-30 Corn-derived Synthetic dyes Tartrazine (FD&C Yellow No. 5) Titanium dioxide Gelatin Sugar (sucrose, dextrose)
Show 10 ingredients

ETHYLCELLULOSE, UNSPECIFIED, FD&C YELLOW NO. 5, FD&C YELLOW NO. 6, GELATIN, UNSPECIFIED, MICROCRYSTALLINE CELLULOSE, POVIDONE K30, STARCH, CORN, SUCROSE, TALC, 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.

Phentermine and Topiramate without synthetic dyes

Synthetic dyes: FD&C or D&C colorants and their aluminum lakes. 7 of 8 checked products list synthetic dyes; 1 does not.

Does not list synthetic dyes

Lists synthetic dyes

Phentermine and Topiramate and gelatin

Gelatin: animal-derived (usually bovine or porcine); a concern for vegetarian, kosher or halal needs. Every checked Phentermine and Topiramate product (8) lists gelatin.

Lists gelatin

Phentermine and Topiramate without corn-derived ingredients

Corn-derived: corn starch, maize or corn syrup; a concern with corn allergy. 7 of 8 checked products list corn-derived ingredients; 1 does not.

Does not list corn-derived ingredients

Lists corn-derived ingredients

Phentermine and Topiramate without tartrazine (FD&C Yellow No. 5)

Tartrazine (FD&C Yellow No. 5): flagged separately: labels must warn about it, and it can cause reactions in people sensitive to aspirin. 4 of 8 checked products list tartrazine (FD&C Yellow No. 5); 4 do not.

Does not list tartrazine (FD&C Yellow No. 5)

Lists tartrazine (FD&C Yellow No. 5)

Phentermine and Topiramate and titanium dioxide

Titanium dioxide: A white colorant some people choose to avoid. Every checked Phentermine and Topiramate product (8) lists titanium dioxide.

Lists titanium dioxide

Phentermine and Topiramate without carmine or shellac

Carmine or shellac: insect-derived red colorant or coating glaze. 1 of 8 checked products list carmine or shellac; 7 do not.

Does not list carmine or shellac

Lists carmine or shellac

Phentermine and Topiramate without propylene glycol

Propylene glycol: A solvent in liquids and capsules; a concern in kidney disease, for infants, and at high doses. 1 of 8 checked products list propylene glycol; 7 do not.

Does not list propylene glycol

Lists propylene glycol

Phentermine and Topiramate without polyethylene glycol or polysorbate

Polyethylene glycol or polysorbate: PEG, macrogol or polysorbate; a rare cause of allergic reactions. 1 of 8 checked products list polyethylene glycol or polysorbate; 7 do not.

Does not list polyethylene glycol or polysorbate

Lists polyethylene glycol or polysorbate

Phentermine and Topiramate without sugar (sucrose or dextrose)

Sugar (sucrose, dextrose): A consideration in diabetes, mostly in liquids and chewables. 7 of 8 checked products list sugar (sucrose or dextrose); 1 does 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 Phentermine and Topiramate product suits you →

Common questions about Phentermine and Topiramate inactive ingredients

Is Phentermine and Topiramate gluten-free?
This page cannot certify any Phentermine and Topiramate product gluten-free; it reports what each label declares. Of the 8 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 Phentermine and Topiramate contain lactose?
No checked Phentermine and Topiramate product 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 Phentermine and Topiramate contain soy?
No checked Phentermine and Topiramate 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 Phentermine and Topiramate?
7 of 8 checked Phentermine and Topiramate products list a synthetic dye (an FD&C or D&C colorant); 1 does not: Teva (PHENTERMINE HYDROCHLORIDE 11.25 mg/1; TOPIRAMATE 69 mg extended-release capsule). Colorants often differ by strength within one company's line, so compare the lists above strength by strength.
Does Phentermine and Topiramate contain gelatin?
Every checked Phentermine and Topiramate product (8) 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 Phentermine and Topiramate 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 Phentermine and Topiramate 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 Phentermine and Topiramate guide