Ephedrine is heavily regulated worldwide due to its potential for misuse and its role as a precursor for methamphetamine. While it was once common in over-the-counter (OTC) weight loss supplements, those products are now largely banned in the United States and elsewhere.
Legal Requirements for the Sale and Purchase of Drug ... - FDA
Today, you can generally only purchase ephedrine as a or for specific medical conditions under strict oversight. Where to Buy Legally
In many regions, ephedrine is "behind-the-counter" (BTC), meaning it is legal to buy without a prescription but requires a consultation with a pharmacist and identity verification.