Gluten Screen

DailyMed checked live · reference data updated August 19, 2026 · 19 product labels screened

Is azithromycin gluten-free?

By

Founder and maintainer of Gluten Screen

Updated October 13, 2026

Not clinically reviewed — verify with your pharmacist

Some formulations contain gluten. Of 19 product labels we cross-checked, 1 list a gluten-derived ingredient outright. Generics from different manufacturers can differ — check which manufacturer's version your pharmacy dispensed before assuming any fill is safe.

Drug context

About azithromycin

Azithromycin is a macrolide antibiotic used for respiratory, skin, and STI infections, sold under brand names including Zithromax, Z-Pak.

Why this matters

Different manufacturers, different ingredients

Generics of azithromycin use the same active ingredient, but they aren't required to use the same inactive ingredients. Your pharmacy may switch which manufacturer they dispense between fills, sometimes without telling you. The list below shows each manufacturer's product label as a separate entry, because that's the granularity that actually matters when you're celiac.

The labels

The 19 we checked

  1. 01
    Greenstone manufacturer-attested gluten-free

    Plogsted list · Azithromycin Oral Suspension all strengths [Greenstone] · label dated 2019-04-23

    Manufacturer confirmed gluten-free (Plogsted 2019-04-23)

    View source label →
  2. 02
    Teva manufacturer-attested gluten-free

    Plogsted list · Azithromycin Oral Suspension all strengths (corn maltodex .) [Teva] · label dated 2019-04-23

    Manufacturer confirmed gluten-free (Plogsted 2019-04-23)

    Worth a call to the maker: Maltodextrin

    View source label →
  3. 03
    Greenstone contains gluten

    Mangione 2024 · azithromycin 250 mg [Greenstone] · label dated 2025-06-09

    Gluten on the label: Manufacturer-declared gluten content (Matson et al. 2025 (peer-reviewed): the manufacturer of this NDC confirmed that the product contains gluten.)

    View source label →
  4. 04
    Sandoz worth a call to confirm

    Plogsted list · Azithromycin Tab all strengths [Sandoz] · label dated 2019-04-23

    View source label →
  5. 05
    Greenstone worth a call to confirm

    Plogsted list · Azithromycin Tab all strengths [Greenstone] · label dated 2019-04-23

    View source label →
  6. 06
    Pliva worth a call to confirm

    Plogsted list · Azithromycin Tab all strengths [Pliva] · label dated 2019-04-23

    View source label →
  7. 07
    WOCKHARDT worth a call to confirm

    Plogsted list · Azithromycin Tab all strengths [WOCKHARDT] · label dated 2019-04-23

    View source label →
  8. 08
    Teva worth a call to confirm

    Plogsted list · Azithromycin Tab all strengths [Teva] · label dated 2019-04-23

    View source label →
  9. 09
    Pfizer worth a call to confirm

    Plogsted list · Azithromycin Tab all strengths [Pfizer] · label dated 2019-04-23

    View source label →
  10. 10
    Alembic Pharmaceuticals Inc. nothing flagged on the label

    US label (DailyMed) · AZITHROMYCIN TABLET, FILM COATED [ALEMBIC PHARMACEUTICALS INC.] · label dated Sep 30, 2026

    Inactive ingredients ANHYDROUS DIBASIC CALCIUM PHOSPHATE · CROSCARMELLOSE SODIUM · HYDROXYPROPYL CELLULOSE (70000 WAMW) · HYPROMELLOSE 2910 (5 MPA.S) · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · SODIUM LAURYL SULFATE · TITANIUM DIOXIDE · TRIACETIN

    View source label →
  11. 11
    Sun Pharmaceutical Industries, Inc. nothing flagged on the label

    US label (DailyMed) · AZITHROMYCIN MONOHYDRATE INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION [SUN PHARMACEUTIC… · label dated Sep 25, 2026

    Inactive ingredients CITRIC ACID MONOHYDRATE · SODIUM HYDROXIDE

    View source label →
  12. 12
    Pfizer Laboratories Div Pfizer Inc nothing flagged on the label

    US label (DailyMed) · ZITHROMAX (AZITHROMYCIN DIHYDRATE) INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION [PFIZER… · label dated Sep 18, 2026

    Inactive ingredients ANHYDROUS CITRIC ACID · SODIUM HYDROXIDE

    View source label →
  13. 13
    Teva Pharmaceuticals USA, Inc. nothing flagged on the label

    US label (DailyMed) · AZITHROMYCIN POWDER, FOR SUSPENSION [TEVA PHARMACEUTICALS USA, INC.] · label dated Sep 14, 2026

    Inactive ingredients DIMETHYLAMINOETHYL METHACRYLATE - BUTYL METHACRYLATE - METHYL METHACRYLATE COPOLYMER · FD&C RED NO. 40 · HYDROXYPROPYL CELLULOSE, UNSPECIFIED · SILICON DIOXIDE · SODIUM PHOSPHATE, TRIBASIC, ANHYDROUS · SUCROSE · XANTHAN GUM

    View source label →
  14. 14
    Teva Pharmaceuticals USA, Inc. nothing flagged on the label

    US label (DailyMed) · AZITHROMYCIN TABLET, FILM COATED [TEVA PHARMACEUTICALS USA, INC.] · label dated Sep 14, 2026

    Inactive ingredients ANHYDROUS DIBASIC CALCIUM PHOSPHATE · CROSCARMELLOSE SODIUM · HYPROMELLOSE 2910 (15 MPA.S) · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE 102 · POLYETHYLENE GLYCOL 4000 · SODIUM LAURYL SULFATE · STARCH, CORN · TITANIUM DIOXIDE · TRISODIUM CITRATE DIHYDRATE

    View source label →
  15. 15
    Aurobindo Pharma Limited nothing flagged on the label

    US label (DailyMed) · AZITHROMYCIN POWDER, FOR SUSPENSION [AUROBINDO PHARMA LIMITED] · label dated Sep 09, 2026

    Inactive ingredients BANANA · CHERRY · FD&C RED NO. 40 · HYDROXYPROPYL CELLULOSE (90000 WAMW) · SODIUM PHOSPHATE, TRIBASIC, ANHYDROUS · SUCROSE · XANTHAN GUM

    View source label →
  16. 16
    Aurobindo Pharma Limited nothing flagged on the label

    US label (DailyMed) · AZITHROMYCIN TABLET, FILM COATED [AUROBINDO PHARMA LIMITED] · label dated Sep 08, 2026

    Inactive ingredients ANHYDROUS DIBASIC CALCIUM PHOSPHATE · CROSCARMELLOSE SODIUM · HYPROMELLOSE 2910 (15 MPA.S) · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · SODIUM LAURYL SULFATE · STARCH, CORN · TITANIUM DIOXIDE · TRIACETIN

    View source label →
  17. 17
    Lupin Pharmaceuticals, Inc. nothing flagged on the label

    US label (DailyMed) · AZITHROMYCIN TABLET, FILM COATED [LUPIN PHARMACEUTICALS, INC.] · label dated Sep 02, 2026

    Inactive ingredients CALCIUM PHOSPHATE, DIBASIC, ANHYDROUS · CROSCARMELLOSE SODIUM · D&C RED NO. 30 · HYPROMELLOSE 2910 (15 MPA.S) · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · SODIUM LAURYL SULFATE · TITANIUM DIOXIDE · TRIACETIN

    View source label →
  18. 18
    Lupin Pharmaceuticals, Inc. nothing flagged on the label

    US label (DailyMed) · AZITHROMYCIN TABLET, FILM COATED [LUPIN PHARMACEUTICALS, INC.] · label dated Sep 02, 2026

    Inactive ingredients CALCIUM PHOSPHATE, DIBASIC, ANHYDROUS · CROSCARMELLOSE SODIUM · HYPROMELLOSE 2910 (15 MPA.S) · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · SODIUM LAURYL SULFATE · TITANIUM DIOXIDE · TRIACETIN

    View source label →
  19. 19
    Zydus Pharmaceuticals USA Inc. nothing flagged on the label

    US label (DailyMed) · AZITHROMYCIN POWDER, FOR SUSPENSION [ZYDUS PHARMACEUTICALS USA INC.] · label dated Aug 20, 2026

    Inactive ingredients FD&C RED NO. 40 · HYDROXYPROPYL CELLULOSE (90000 WAMW) · SODIUM PHOSPHATE, TRIBASIC, ANHYDROUS · SUCROSE · XANTHAN GUM

    View source label →

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Background

What “gluten in a medication” actually means

Gluten enters drugs through their excipients — the inactive ingredients used to bind, coat, fill, or stabilize the dose. The main concern is wheat starch as a filler. Source-ambiguous starches (plain “starch”, pregelatinized starch, sodium starch glycolate, modified starch) get flagged for verification because their botanical origin isn't always disclosed on the label.

The 2024 Mangione et al. pediatric NDC analysis (689 NDCs across the top 100 pediatric medications) found 1.5% contained gluten outright; another 25.7% couldn't be confirmed either way. Liquid and oral-suspension formulations carry disproportionate risk because wheat starch is a common thickener. Full methodology →

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Important. This page is informational. Drug labels can change without notice; a manufacturer attestation is point-in-time, not a warranty. If you have celiac disease and your pharmacy switches manufacturers, re-screen the new label before taking the dispensed product. For a definitive answer, call the manufacturer's medical-information line with the NDC code from your prescription bottle — or take our printable pharmacist card to the counter, which asks the three questions a pharmacist can actually answer.