July 8, 2026 By: Asa Waldstein

10 Ketamine Warning Letters Issued

Takeaway -

Compliance is essential to product safety

FDA just issued a batch of 10 warning letters to companies selling the drug ketamine online.

I am still surprised when I see drugs openly sold via standard e-commerce, and equally surprised that people actually purchase them.

This group of warning letters highlights that there are many non-compliant operators online selling everything from ketamine to semaglutide. It is a reminder that going the legal, highly regulated route is essential to ensuring safety and product quality.

A little bit about Schedule III drugs: this category also includes things like ketamine, anabolic steroids, testosterone, and lower-dose Tylenol with codeine products. While it is possible to legally purchase Schedule III drugs online, such as when prescribed by a licensed practitioner during a compliant telehealth appointment and dispensed through a DEA-registered pharmacy, none of the companies targeted in this group of warning letters appeared to have followed this path.

Why am I writing about this in Warning Letter Wednesday? Aside from it being a slower week for supplement letters, there may be some correlations in the natural products industry. Far too often, when companies make outrageous marketing claims, it acts as a bellwether for potential product quality and adulteration issues.

There are also two regulatory parallels here for supplement brands to keep in mind:

The “Unapproved New Drug” Trap: FDA cited these sites for introducing “unapproved new drugs” into interstate commerce. This is the same regulatory mechanism FDA uses when a natural product crosses the line from a compliant structure-function claim into an illegal disease claim.

Digital Enforcement is Real: FDA caught all 10 of these companies simply by reviewing their commercial websites. This is a great reminder that conducting a routine compliance scrub of your secondary marketing, including websites, social media, and e-commerce platforms, is just as critical as vetting your physical product labels.

Disclaimer: The educational information provided here is for informational purposes only. Contact an attorney for specific legal advice. Rule #1 in compliance is to ensure marketing is truthful and not misleading.

Written by

Asa Waldstein
Asa Waldstein
Asa Waldstein is a 24-year veteran of the dietary supplement industry, with experience spanning manufacturing, marketing, and regulatory compliance. He is the principal of Apex Compliance, a software company dedicated to streamlining regulatory marketing compliance for the dietary supplement and natural products sectors. Asa also leads Supplement Advisory Group, a boutique consultancy focused on marketing risk analysis, labeling, and practical compliance strategies for websites and social media. Asa has helped oversee three FDA GMP inspections with no 483s and was honored with the 2023 AHPA Herbal Hero Award and the 2024 What's Up Supps Policy and Change Agent Award. He currently serves as Chair of the American Herbal Products Association’s (AHPA) Technology & AI Innovation Committee.