RLC Labs Nature Throid Recall: FDA Class I

Why it was recalled

Subpotent Drug: FDA analysis found product to be subpotent

Product description

Nature 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 numbers, UPCs & expiration codes

Lot #: 099186, Exp. Date 11/2022

Where it was sold

Nationwide in the United States

What to do if you have this product

Compare the lot number and expiration date on your package with the codes above.
Don't stop taking a prescription medicine on your own. Call your pharmacist or doctor; they can confirm whether your supply is affected and arrange a replacement.
If you have symptoms you think are related, contact your doctor. In an emergency call 911.
Report side effects to FDA MedWatch at 1-800-FDA-1088.

Recall details

Recall number: D-1615-2020
Classification: Class I
Status: Terminated
Recall initiated: Aug 25, 2020
FDA report date: Sep 23, 2020
Quantity: N/A
Recall type: Voluntary: Firm initiated
Recalling firm: RLC Labs Inc.

Original FDA data

Every field from FDA enforcement report D-1615-2020, exactly as published.

Show all FDA fields

City: Phoenix
State: AZ
Status: Terminated
Country: United States
Event ID: 86343
Address: 1850 E Riverview Dr
Code information: Lot #: 099186, Exp. Date 11/2022
Postal code: 85034-6703
Report date: Sep 23, 2020
Product type: Drugs
Recall number: D-1615-2020
Classification: Class I
Recalling firm: RLC Labs Inc.
Termination date: Nov 8, 2023
Reason for recall: Subpotent Drug: FDA analysis found product to be subpotent
Voluntary / mandated: Voluntary: Firm initiated
Product description: Nature 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
Distribution pattern: Nationwide in the United States
Recall initiation date: Aug 25, 2020
Initial firm notification: E-Mail
Center classification date: Sep 24, 2020

How we source this data

Source: U.S. Food and Drug Administration enforcement report D-1615-2020, published Sep 23, 2020. View the source record (openFDA) · FDA enforcement reports

Last checked against FDA data: Oct 2, 2026. Content last changed: Oct 2, 2026.

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RLC Labs Nature Throid Recall

Summary