This is a massive topic but I'll give you the highlights from my research:
STRICTEST STATES:
- California: Requires resident pharmacist for compounding, strict Board of Pharmacy oversight, recent crackdown on telehealth-prescribed compounded medications
- New York: Historically strict on out-of-state shipments, requires pharmacy to be licensed in NY
- Massachusetts: Post-NECC, arguably the tightest compounding regs in the country
MORE PERMISSIVE STATES:
- Texas: Large compounding pharmacy industry, generally business-friendly regulatory environment
- Florida: Home to many 503B outsourcing facilities, relatively permissive
- Utah: Has carved out specific provisions for compounding
CROSS-STATE SHIPPING:
503B outsourcing facilities (federally registered) can generally ship across state lines. 503A pharmacies typically need to be licensed in the receiving state, though enforcement varies.