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Use caution Drug recall · FDA · Published August 25, 2020

RLC Labs Recalls WP Thyroid and Westhroid Pure Due to CGMP Deviations

RLC Labs recalls certain lots of WP Thyroid and Westhroid Pure due to potential subpotency from CGMP deviations. Check your NDC and expiry date.

Plain-English summary generated from official FDA data by GovInfoNow · Published by Carlos Caban · How we make summaries

🇺🇸 FDA recall #D-1609-2020DrugRLC Labs ›
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Contact the company

Recalling firmRLC Labs Inc.1850 E Riverview Dr · Phoenix, AZ 85034-6703
✎ GovInfoNow plain-language explainer

RLC Labs Inc. is recalling specific lots of WP Thyroid and Westhroid Pure, 1 Grain (65 mg) Thyroid USP because they were manufactured under conditions found to be subpotent. This means the medication may not contain the correct amount of active ingredient. The recall affects all lots with an expiry date between 10/2020-07/2023. Read more at govinfonow.com/recall/36797-rlc-labs-recalls-wp-thyroid-and-westhroid-pure-due-to.

Source Summary by GovInfoNow · govinfonow.com/recall/36797-rlc-labs-recalls-wp-thyroid-and-westhroid-pure-due-to · Updated October 11, 2026 · FDA enforcement record: FDA #D-1609-2020

Cite this page

“RLC Labs Recalls WP Thyroid and Westhroid Pure Due to CGMP Deviations.” GovInfoNow, updated October 11, 2026. https://govinfonow.com/recall/36797-rlc-labs-recalls-wp-thyroid-and-westhroid-pure-due-to. Based on FDA recall #D-1609-2020 (https://api.fda.gov/drug/enforcement.json?search=recall_number:%22D-1609-2020%22&limit=1).

RLC Labs Inc. recalled WP Thyroid and Westhroid Pure due to CGMP deviations that may result in subpotent medication, the FDA said on Aug. 25, 2020.

How to tell if you have it

  • WP Thyroid and Westhroid Pure, 1 Grain (65 mg) Thyroid USP
  • NDC 64727-5750-2 (1,000 Tablets)
  • NDC 64727-5750-4 (30 Tablets)
  • NDC 64727-5750-5 (60 Tablets)
  • NDC 64727-5750-6 (90 Tablets)
  • NDC 64727-5750-1 (100 Tablets)
  • Lots with expiry between 10/2020-07/2023

The hazard

The products were manufactured under conditions found to be subpotent, according to the FDA. This CGMP deviation poses a risk of receiving medication with incorrect potency.

Context

GovInfoNow's records show RLC Labs has had prior regulatory issues, including this Class II recall terminated on Aug. 25, 2020. Other recent recalls of similar products include Specialty Process Labs Thyroid Product Recall (Jan. 16, 2026), Major Pharmaceuticals Levothyroxine Tablets Recall (July 13, 2026) and Macleods Levothyroxine Tablets Recall (Feb. 26, 2026).

How to tell if you have this one

Check your bottle for the brand name WP Thyroid or Westhroid Pure, 1 Grain (65 mg) Thyroid USP. Look for NDC numbers 64727-5750-2, 64727-5750-4, 64727-5750-5, 64727-5750-6, or 64727-5750-1. Verify the lot's expiry date is between 10/2020-07/2023.

  • Brand
    RLC Labs
  • Category
    Drug
FDA recall event · 24 products

All 24 products in this recall

FDA lists each product line separately under one recall event. Check your product description, lot or code numbers against each row. Every row shares the hazard and remedy on this page.

  • Status
    Terminated
  • Distribution
    Nationwide in the United States
Recall numberProduct, codes & lotsClass
D-1596-2020Nature-Throid, Thyroid USP [liothyronine (T3) 9 mcg and levothyroxine (T4) 38 mcg], 1 Grain (65 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-3300-4; b) 60-count bottles, NDC 64727-3300-5; c) 90-count bottles, NDC 64727-3300-6; d) 100-count bottles, NDC 64727-3300-1; and e) 1,000-count bottles, NDC 64727-3300-2; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between 10/2020-07/2023Class II
D-1597-2020Nature-Throid, Thyroid USP [liothyronine (T3) 6.75 mcg and levothyroxine (T4) 28.5 mcg], 3/4 Grain (48.75 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-3302-4; b) 60-count bottles, NDC 64727-3302-5; c) 90-count bottles, NDC 64727-3302-6; d) 100-count bottles, NDC 64727-3302-1; and e) 1,000-count bottles, NDC 64727-3302-2; Rx Only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between 10/2020-07/2023Class II
D-1598-2020Nature-Throid, Thyroid USP [liothyronine (T3) 4.5 mcg and levothyroxine (T4) 19 mcg], 1/2 Grain (32.5 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-3299-4; b) 60-count bottles, NDC 64727-3299-5; c) 90-count bottles, NDC 64727-3299-6; d) 100-count bottles, NDC 64727-3299-1; and e) 1000-count bottles, NDC 64727-3299-2; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between 10/2020-07/2023Class II
D-1599-2020Nature-Throid, Thyroid USP [liothyronine (T3) 11.25 mcg and levothyroxine (T4) 47.5 mcg], 1.25 Grain (81.25 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-3303-4; b) 60-count bottles, NDC 64727-3303-5; c) 90-count bottles, NDC 64727-3303-6; d) 100-count bottles, NDC 64727-3303-1; e) 1,000-count bottles, NDC 64727-3303-2; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between10/2020-07/2023Class II
D-1600-2020Nature-Throid, Thyroid USP [liothyronine (T3) 13.5 mcg and levothyroxine (T4) 57 mcg], 1.5 Grain (97.5 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-3305-4; b) 60-count bottles, NDC 64727-3305-5; c) 90-count bottles, NDC 64727-3305-6; d) 100-count bottles, NDC 64727-3305-1; and e) 1,000-count bottles, NDC 64727-3305-2; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between 10/2020-07/2023Class II
D-1601-2020Nature-Throid, Thyroid USP [liothyronine (T3) 15.75 mcg and levothyroxine (T4) 66.5 mcg], 1.75 Grain (113.75 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-3307-4; b) 60-count bottles, NDC 64727-3307-5; c) 90-count bottles, NDC 64727-3307-6; d) 100-count bottles, NDC 64727-3307-1; and e) 1,000-count bottles, NDC 64727-3307-2; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between 10/2020-07/2023Class II
D-1602-2020Nature-Throid, Thyroid USP [liothyronine (T3) 18 mcg and levothyroxine (T4) 76 mcg], 2 Grain (130 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-3308-4; b) 60-count bottles, NDC 64727-3308-5; c) 90-count bottles, NDC 64727-3308-6; d) 100-count bottles, NDC 64727-3308-1; and e) 1,000-count bottles, NDC 64727-3308-2; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between 10/2020-07/2023Class II
D-1603-2020Nature-Throid, Thyroid USP [liothyronine (T3) 20.25 mcg and levothyroxine (T4) 85.5 mcg], 2.25 Grain (146.25 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-3309-4; b) 60-count bottles, NDC 64727-3309-5; c) 90-count bottles, NDC 64727-3309-6; d) 100-count bottles, NDC 64727-3309-1; and e) 1,000-count bottles, NDC 64727-3309-2; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between 10/2020-07/2023Class II
D-1604-2020Nature-Throid, Thyroid USP [liothyronine (T3) 22.5 mcg and levothyroxine (T4) 95 mcg], 2.5 Grain (162.5 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-3310-4; b) 60-count bottles, NDC 64727-3310-5; c) 90-count bottles, NDC 64727-3310-6; d) 100-count bottles, NDC 64727-3310-1; and e) 1,000-count bottles, NDC 64727-3310-2; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between 10/2020-07/2023Class II
D-1605-2020Nature-Throid, Thyroid USP [liothyronine (T3) 27 mcg and levothyroxine (T4) 114 mcg], 3 Grain (195 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-3312-4; b) 60-count bottles, NDC 64727-3312-5; c) 90-count bottles, NDC 64727-3312-6; d) 100-count bottles, NDC 64727-3312-1; and e) 1,000-count bottles, NDC 64727-3312-2; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between 10/2020-07/2023Class II
D-1606-2020WP Thyroid, Westhroid Pure, Thyroid USP, [liothyronine (T3) 2.25 mcg and levothyroxine (T4) 9.5 mcg], 1/4 Grain (16.25 mg) Tablets, packaged in a) 30-count bottles, NDC 64727-5450-4; b) 60-count bottles, NDC 64727-5450-5; c) 90-count bottles, NDC 64727-5450-6; d) 100-count bottles, NDC 64727-5450-1; and e) 1,000-count bottles, NDC 64727-5450-2; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034.; All lots with expiry between 10/2020-07/2023Class II
D-1607-2020WP Thyroid, Westhroid Pure, 1/2 Grain (32.5 mg) Thyroid USP packaged in a) 1,000 Tablets, NDC 64727-5550-2 ; b) 30 Tablets, NDC 64727-5550-4; c) 60 Tablets, NDC 64727-5550-5; d) 90 Tablets, NDC 64727-5550-6; e) 100 Tablets, NDC 64727-5550-1; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034; All lots with expiry between 10/2020-07/2023Class II
D-1608-2020WP Thyroid, Westhroid Pure, 3/4 Grain (48.75 mg) Thyroid USP, packaged in a) 1,000 Tablets, NDC 64727-5650-2 ; b) 30 Tablets, NDC 64727-5650-4; c) 60 Tablets, NDC 64727-5650-5; d) 90 Tablets, NDC 64727-5650-6; e) 100 Tablets, NDC 64727-5650-1; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034; All lots with expiry between 10/2020-07/2023Class II
D-1609-2020WP Thyroid, Westhroid Pure, 1 Grain (65 mg) Thyroid USP, packaged in a) 1,000 Tablets, NDC 64727-5750-2 ; b) 30 Tablets, NDC 64727-5750-4; c) 60 Tablets, NDC 64727-5750-5; d) 90 Tablets, NDC 64727-5750-6; e) 100 Tablets, NDC 64727-5750-1; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034; All lots with expiry between 10/2020-07/2023Class II
D-1610-2020WP Thyroid, Westhroid Pure, 1.25 Grain (81.25 mg) Thyroid USP packaged in a) 1,000 Tablets, NDC 64727-6050-2 ; b) 30 Tablets, NDC 64727-6050-4; c) 60 Tablets, NDC 64727-6050-5; d) 90 Tablets, NDC 64727-6050-6; e) 100 Tablets, NDC 64727-6050-1; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034; All lots with expiry between 10/2020-07/2023Class II
D-1611-2020WP Thyroid, Westhroid Pure, 1.5 Grain (97.5 mg) Thyroid USP packaged in a) 1,000 Tablets, NDC 64727-5850-2 ; b) 30 Tablets, NDC 64727-5850-4; c) 60 Tablets, NDC 64727-5850-5; d) 90 Tablets, NDC 64727-5850-6; e) 100 Tablets, NDC 64727-5850-1; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034; All lots with expiry between 10/2020-07/2023Class II
D-1612-2020WP Thyroid, Westhroid Pure, 1.75 Grain (113.75 mg) Thyroid USP, packaged in a) 1,000 Tablets, NDC 64727-6150-2 ; b) 30 Tablets, NDC 64727-6150-4; c) 60 Tablets, NDC 64727-6150-5; d) 90 Tablets, NDC 64727-6150-6; e) 100 Tablets, NDC 64727-6150-1; Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034; All lots with expiry between 10/2020-07/2023Class II
D-1613-2020WP Thyroid, Westhroid Pure, 2 Grain (130 mg) Thyroid USP packaged in a) 1,000 Tablets, NDC 64727-5950-2 ; b) 30 Tablets, NDC 64727-5950-4; c) 60 Tablets, NDC 64727-5950-5; d) 90 Tablets, NDC 64727-5950-6; e) 100 Tablets, NDC 64727-5950-1; Rx Only, Manufactured by: RLC Labs Phoenix, AZ 85034; All lots with expiry between 10/2020-07/2023Class II
D-1614-2020WP Thyroid, Westhroid Pure, 1/2 Grain (32.5 mg) Thyroid USP [Liothyronine (T3) 4.5 mcg, Levothyroxine (T4) 19 mcg], packaged in a) 30-count bottles (NDC 64727-5550-4), b) 90-count bottles (NDC 64727-5550-6), c) 100-count bottles (NDC 64727-5550-1), Rx only, Manufactured by: RLC Labs Phoenix, AZ 85024; Lot #: 119142, Exp. Date 01/2022Class I
D-1615-2020Nature Throid, 1/2 Grain (32.5 mg) Thyroid USP [Liothyronine (T3) 4.5 mcg, Levothyroxine (T4) 19 mcg], packaged in a) 90-count bottles (NDC 64727-3299-6), b) 100-count bottles (NDC 64727-3299-1), Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034; Lot #: 099186, Exp. Date 11/2022Class I
D-1616-2020Nature Throid, 3/4 Grain (48.75 mg) Thyroid USP [Liothyronine (T3) 6.75 mcg, Levothyroxine (T4) 28.5 mcg], packaged in a) 100-count bottles (NDC 64727-3302-1) and b) 1000-count bottles (NDC 64727-3302-2), Rx only, Manufactured by: RLC Labs Phoenix, AZ 85034; Lot #: 109242, Exp. Date 11/2022Class I
D-1617-2020Nature Throid, 1.25 Grain (81.25 mg) Thyroid USP [Liothyronine (T3) 11.25 mcg, Levothyroxine (T4) 47.5 mcg], 100-count bottles, Rx only, Manufactured by: RLC Labs Phoenix, AZ 85024, NDC 64727-3303-1; Lot #: 109032, Exp. Date 10/2022Class I
D-1618-2020Nature Throid, 2 Grain (130 mg) Thyroid USP [Liothyronine (T3) 18 mcg, Levothyroxine (T4) 76 mcg], packaged in a) 30-count bottles (NDC 64727-3308-4) and b)100-count bottles (NDC 64727-3308-1), Rx only, Manufactured by: RLC Labs Phoenix, AZ 85024; Lot #: 109264, Exp. Date 10/2022Class I
D-1619-2020Nature Throid, 1.5 Grain (97.5 mg) Thyroid USP [Liothyronine (T3) 13.5 mcg, Levothyroxine (T4) 57 mcg], packaged in a) 30-count bottles (NDC 64727-3305-4), b) 60-count bottles (NDC 64727-3305-5), c) 90-count bottles (NDC 64727-3305-6), and 100-count bottles (NDC 64727-3305-1), Rx only, Manufactured by: RLC Labs Phoenix, AZ 85024, NDC 64727-3305-1; Lot #: 109286, Exp. Date 10/2022Class I
Based on the official FDA remedy

What to do — step by step

  1. Check Your Medication

    Verify if your bottle matches the recalled NDC numbers and has an expiry date between 10/2020-07/2023.

  2. Contact Your Pharmacist

    Speak with your pharmacist or healthcare provider to determine if you have a recalled product and how to replace it.

Where it went and when

Where it was distributed

Distributed nationwide.

Alaska: yesAKMaine: yesMEVermont: yesVTNew Hampshire: yesNHWashington: yesWAIdaho: yesIDMontana: yesMTNorth Dakota: yesNDMinnesota: yesMNIllinois: yesILWisconsin: yesWIMichigan: yesMINew York: yesNYRhode Island: yesRIMassachusetts: yesMAOregon: yesORNevada: yesNVWyoming: yesWYSouth Dakota: yesSDIowa: yesIAIndiana: yesINOhio: yesOHPennsylvania: yesPANew Jersey: yesNJConnecticut: yesCTCalifornia: yesCAUtah: yesUTColorado: yesCONebraska: yesNEMissouri: yesMOKentucky: yesKYWest Virginia: yesWVVirginia: yesVAMaryland: yesMDDelaware: yesDEArizona: yesAZNew Mexico: yesNMKansas: yesKSArkansas: yesARTennessee: yesTNNorth Carolina: yesNCSouth Carolina: yesSCDistrict of Columbia: yesDCOklahoma: yesOKLouisiana: yesLAMississippi: yesMSAlabama: yesALGeorgia: yesGAHawaii: yesHITexas: yesTXFlorida: yesFL

FDA distribution: “Nationwide in the United States” States read from FDA’s own wording; “not listed” means the notice does not name it.

Distributed nationwide.

Recall timeline

FDA terminated this recall 3.2 years after the firm started it.

1. Firm started the recall: Aug 25, 202012. Published in FDA’s Enforcement Report: Sep 23, 202023. FDA classified it Class II: Sep 24, 202034. FDA terminated the recall: Nov 8, 2023420202023
  1. Firm started the recall
  2. Published in FDA’s Enforcement Report
  3. FDA classified it Class II
  4. FDA terminated the recall

Dates from the agency record only; steps without a date are left out.

✎ GovInfoNow

Questions people ask

From the GovInfoNow team · based on the FDA notice · How we make summaries

Where were these products sold?

The products were distributed nationwide in the United States.

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Keep exploring

Where this comes from

The facts (hazard, remedy, dates, manufacturer) are pulled from the official FDA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.

  • Official source: FDA Recall #D-1609-2020 (August 25, 2020) — FDA publishes no per-recall page; this is the official machine-readable enforcement record. Search FDA recalls for D-1609-2020 to see it in context.
  • Plain-language summary written by qwen3.6:35b-a3b on October 11, 2026, from the official record above. Not reviewed by a person — if it conflicts with the FDA notice, the notice is correct. Report an error on this page.
  • GovInfoNow is an independent service and is not a government agency. We republish official FDA recall data; we don’t issue, amend or administer recalls.
GovInfoNow is an independent guide. We are not FDA or any government agency. Always confirm details with the official recall.Data: CPSC · FDA · NHTSA · USDA