Addall XR Shot warning puts another risky supplement on FDA's stop-use list
The FDA says consumers should stop using Addall XR Shot and Addall XL after testing found unlawful or undeclared ingredients that can raise serious health risks.
Leena Patel
Health reporter
Published Apr 24, 2026
Updated Apr 24, 2026
2 min read
Overview
The Addall XR Shot warning from the FDA is unusually direct: stop using the products, do not sell them, and throw them away. In an April 3 update, the agency said laboratory testing found unlawful or undeclared ingredients in Addall XR Shot and Addall XL capsules, products distributed by ZMB Enterprises and sold online as well as through gas stations and convenience stores nationwide.
For consumers, the Addall XR Shot warning is less about niche supplement regulation and more about a plain safety problem. The FDA says the products can expose people to substances tied to cardiovascular and neurocognitive risk, including phenibut, 1,4-DMAA, and DMHA.
Why the Addall XR Shot warning matters
The FDA said Addall XR Shot was found to contain phenibut and undeclared 1,4-DMAA, while Addall XL capsules contained DMHA and undeclared 1,4-DMAA. The agency says those ingredients are not lawful dietary supplement ingredients in this context and can create serious health concerns.
That makes this more than a labeling issue. The concern is not only that the products were sold as supplements. It is that buyers may not have known what they were actually taking.
What the FDA says the health risks are
According to the FDA, DMAA and DMHA can raise blood pressure and may contribute to chest tightness, shortness of breath, and even heart attack. The agency also says phenibut can cause poor balance, fatigue, diminished consciousness, and dependence, with withdrawal risk after repeated use.
The warning becomes sharper because the FDA says the firm declined to recall Addall XL capsules even after being notified of test results. That left the agency using a public alert to push the consumer action directly.
What consumers should do now
The FDA says consumers should stop using both products immediately and dispose of them. Retailers and distributors should not sell them. Anyone who became ill after using the products should contact a healthcare provider.
That is the key practical point. This is not a story about wellness trends or gray-market hype. It is a specific consumer safety alert with a clear next step: do not keep using the product because the label looked familiar.
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