U.S. safety records, as the agencies wrote them. Independent.
Supplements · brand

Nutrex Research Black Series

59 labels in NIH's Dietary Supplement Label Database under the brand name “Nutrex Research Black Series” as NIH writes it: 49 on the market and 10 off the market, each A to Z.

On FDA's ingredient directory

Ingredients FDA lists in its directory of actions and communications that these labels name: Hordenine HCl (2 labels; Ingredient is not a “dietary ingredient” under section 201(ff)(1) of the Federal Food, Drug, and Cosmetic Act (FD&C Act)), 5-Alpha-Hydroxy-Laxogenin (1 label; Ingredient is not a “dietary ingredient” under section 201(ff)(1) of the Federal Food, Drug, and Cosmetic Act (FD&C Act)). Matched by the ingredient's name alone.

On the market 49

Off the market 10

"On the market" and "off the market" are NIH's market status for the label; a label NIH lists as off the market may still be in homes. A brand name NIH writes another way (other capitals or spelling) has its own page.

Source: Dietary Supplement Label Database (DSLD), Office of Dietary Supplements, National Institutes of Health (dsld.od.nih.gov), DSLD version 9.4.0 | January 2026, NIH's full download of Jan. 10, 2026. NIH: “The Dietary Supplement Label Database (DSLD) captures the image and all information declared on the labels of products sold as dietary supplements in the United States. The manufacturer or distributor is responsible for this label information; therefore, the labels might be incomplete and/or inaccurate and the products might contain ingredients of concern to the U.S. Food and Drug Administration (FDA).” PlainRecords is not affiliated with NIH or the Office of Dietary Supplements, which do not endorse this site or any product. Records are shown as NIH lists them; label images are not copied (they are on NIH's pages).

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