Start with the federal framework in our US-wide guide - it sets the floor everywhere. This page covers what California specifically adds.
What makes California different
Two things: an unusually active Medical Board, and the Unfair Competition Law (UCL, Business & Professions Code §17200), which lets both the Attorney General and private plaintiffs sue over the marketing of unapproved products. A med-spa advertising BPC-157 'therapy' in Los Angeles is exposed three ways - FDA action, board discipline against the supervising physician, and UCL litigation.
The board has disciplined physicians for administering unapproved substances under the banner of 'wellness' or 'regenerative' medicine, and the standard of care obligation doesn't bend because a patient signed a waiver.
For consumers
Buying research-chemical peptides online for personal use is not prosecuted as possession - the substances are generally not scheduled. The practical risks are product integrity (no purity verification) and the absence of any recourse when something goes wrong. California's consumer protections apply to sellers, but suing an anonymous RUO website is theoretical relief.
Peptides that are FDA-approved drugs (semaglutide, tirzepatide, bremelanotide) follow ordinary prescription rules - legal with a valid prescription, including through California-licensed telehealth.
Frequently asked questions
Can a California clinic legally offer BPC-157 injections?
No compounding pathway exists for BPC-157 (FDA Category 2), so a clinic administering it is using an unapproved drug outside any sanctioned route - exposing the physician to board discipline and the business to UCL claims. Clinics doing it anyway are pricing in enforcement risk, not operating in a permitted lane.
Is peptide therapy via telehealth legal in California?
For FDA-approved products (like GLP-1s), yes - with a California-licensed prescriber and a valid patient relationship. For unapproved peptides, telehealth doesn't launder the underlying problem: the product itself has no legal route.