On March 20, 2026, the Food and Drug Administration issued a Warning Letter to Nupack Inc., following a facility inspection that found the company’s dietary supplements, including Cardiag, Diabetech, Cleanse-CAMP, MACA 1000 mg, Kidney Cleanse, and Pure Psyllium Husk, to be adulterated because they were prepared, packed, or held under conditions that do not meet current Good Manufacturing Practices (cGMP).

(For information about related products, see ConsumerLab’s Reviews of Maca Supplements and Psyllium Supplements. Also see our articles about heart health and blood sugar.)

According to the warning letter, violations included failure to establish finished product specifications, to prepare and follow written master manufacturing records, to prepare batch production records, and to establish written procedures for returned dietary supplements.

In addition, statements on the company’s website and product labels for several products, including Cardiag, Diabetech, Cleanse-CAMP, MACA, Kidney Cleanse, and Pure Psyllium Husk, were found to constitute drug claims, which are not permitted for dietary supplements. For example, MACA was promoted with statements such as “MACA may helps [sic] to reduce erectile dysfunction,” and Pure Psyllium Husk was promoted with statements such as “Support to lower LDL Cholesterol.”

Nupack must provide a written response within 15 working days describing corrective actions to address these violations.

For more information, use the link below.

Warning Letter: Nupack Inc.

See related recalls and warnings:

FDA Warns Hekma Center, LLC for Promoting Products to Treat Anemia, Diabetes, Depression, & More

FDA Warns Vidaslim for Manufacturing Violations