Guide
Peptide therapy: what it is and how to get it legally
Short answer
Peptide therapy means using a peptide, a short chain of amino acids, as a prescription medicine. In the U.S. there are two legal ways to get one: an FDA-approved peptide drug, or a compounded peptide made for you by a licensed pharmacy with a prescription. Peptides sold as "research use only" are not for people. Either way, start with a licensed clinician.
What peptide therapy is
A peptide is a short chain of amino acids, usually 2 to 50, joined by chemical bonds. Longer chains are called polypeptides, and proteins are made of one or more of them. Source: NIH
Peptide therapy means using a peptide as a prescription medicine. Some peptides are FDA-approved prescription drugs. A few examples, with what FDA approved each one for:
Wegovy (semaglutide): approved for long-term weight management in adults and children 12 and older with obesity (with diet and exercise), and to lower the risk of heart attack and stroke in adults with heart disease and obesity or overweight. FDA label
Zepbound (tirzepatide): approved for long-term weight management in adults with obesity (with diet and exercise), and moderate to severe obstructive sleep apnea in adults with obesity. FDA label
Egrifta SV (tesamorelin): approved for reducing extra belly fat in adults with HIV who have lipodystrophy. FDA label
Vyleesi (bremelanotide): approved for low sexual desire (hypoactive sexual desire disorder) in women before menopause. FDA label
Imcivree (setmelanotide): approved for weight management in people with certain rare genetic conditions or acquired hypothalamic obesity. FDA label
Labels from DailyMed (U.S. National Library of Medicine), which publishes each drug's FDA-approved label. Checked September 26, 2026.
The legal ways to get peptides
Legal with a prescription
FDA-approved peptide drug
A licensed clinician prescribes it and a pharmacy fills it. Examples: Wegovy (semaglutide) and Zepbound (tirzepatide).
FDA-approved drugs go through FDA review for safety, effectiveness and quality before they are sold. Compounded drugs do not. Source
Legal with a prescription, within federal rules
Compounded peptide
Federal law lets a state-licensed pharmacy compound (custom-make) a drug for one named patient when it gets a valid prescription. The pharmacy may only use a bulk ingredient that meets an official U.S. Pharmacopeia standard, is part of an FDA-approved drug, or is on FDA's list of ingredients allowed for compounding. Compounded drugs are not FDA-approved.
Not for people
"Research use only"
Peptides sold online as "research use only" or "not for human consumption" are not approved for people. FDA has sent warning letters to sellers of these products, saying the labels do not change the fact that the products are being sold as drugs for people, and that they are unapproved new drugs.
Which peptides pharmacies may use is changing in 2026. See where FDA's rules stand today.
How to find a licensed clinician
- Enter your ZIP code in our finder. It shows the online clinicians that serve your state, and local clinics as they are listed.
- Ask before you book: which peptides the clinic prescribes, whether each one is FDA-approved or compounded, which state-licensed pharmacy fills it, the total monthly cost, and whether it serves your state.
- Get blood work if your clinician asks for it. The same finder shows the labs and mobile blood draws that serve your state. See blood test prices.
Peptide medicines for weight: GLP-1s
Semaglutide and tirzepatide are peptide medicines, sold as FDA-approved brands and as compounded versions. Compare self-pay prices on the cheapest GLP-1 without insurance, or read how getting semaglutide online works.
Frequently asked questions
What is peptide therapy?
Peptide therapy means using a peptide as a prescription medicine. A peptide is a short chain of amino acids. Some peptide medicines are FDA-approved drugs; others are compounded by a licensed pharmacy for one patient. Either way, a licensed clinician has to prescribe it.
Is peptide therapy legal?
It can be. FDA-approved peptide drugs are legal with a prescription. A compounded peptide is legal when a state-licensed pharmacy makes it for you from a valid prescription using an ingredient that federal rules allow. Products sold as research use only are not for people.
Do I need a prescription for peptides?
Yes, for peptide medicines. FDA-approved peptide drugs and compounded peptides both need a prescription from a licensed clinician.
Can I get peptide therapy online?
Yes. Online clinics such as TeleWellnessMD and GobyMeds offer visits with licensed clinicians, and what they offer depends on your state. Enter your ZIP code on Peptide Care Finder to see the options for your state.
Does Peptide Care Finder sell peptides?
No. We are a free directory. We don't sell medicine or give medical advice. Talk to a licensed clinician about your health.