Estriol Micronized (Spectrum Lab) – Subpotent Drug (2019)
Class II: A situation in which use of, or exposure to, a violative product may cause temporary or medically reversible adverse health consequences or where the probability of serious adverse health consequences is remote
Class II recall indicates potential for temporary health effects.
This AI-generated summary is provided for general informational purposes only and is derived from publicly available recall notices. It supplements but does not replace official agency classifications or safety instructions.
Check Your Product
According to the U.S. Food and Drug Administration (FDA)
Product
Estriol [(16a, 17B)-Estra-1,3,5(10)-triene-3,16,17-triol; Oestriol] Micronized, USP, CAS 50-27-1, packaged in a) 1 G glass bottles, b) 5 G glass bottles, c) 25 G glass bottles, d) 100 G glass bottles, e) 500 G glass bottles, and f) 1 KG plastic bottles, Rx Only, Spectrum Chemical Mfg Corp., Gardena, CA 90248.
Brand
Spectrum Laboratory Products
Lot Codes / Batch Numbers
Lot #s: 1HG0308, 1HH0630, 1HI0854, 4HL0005, 4HL0036, 4IH0032, Exp. 04/16/2021
Products Sold
Lot #s: 1HG0308, 1HH0630, 1HI0854, 4HL0005,4HL0036, 4IH0032, Exp. 04/16/2021
Spectrum Laboratory Products is recalling Estriol [(16a, 17B)-Estra-1,3,5(10)-triene-3,16,17-triol; Oestriol] Micronized, USP, CAS 50-27-1, pa due to Subpotent Drug: Supplier indicated assay results did not meet specifications.. This is a Class I recall, indicating a high risk of serious health consequences. Based on FDA drug enforcement report.
Summary derived from FDA notice
Reason for Recall
As stated by FDA
Subpotent Drug: Supplier indicated assay results did not meet specifications.
Recommended Action
Per FDA guidance
Consumers should stop using the product and contact the recalling firm, their healthcare provider, or return it to the place of purchase.
Verify this information on the official source
For complete details and official instructions, check the U.S. Food and Drug Administration (FDA) directly.
View official FDA recall noticePage updated: Jan 7, 2026