Starting Nov. 12, 2026, federal rules count THCA in total THC when defining...

https://www.usaenlinea.com/the-hemp-law-changing-this-fall-and-what-it-means-for-whats-on-the-shelf/

Starting Nov. 12, 2026, federal rules count THCA in total THC when defining hemp. By Dec. 11, products must also stay under a 0.4 mg total-THC cap per container, which may limit what shoppers find on shelves.