Peptides, without the hype
Peptides are short chains of amino acids your body uses to send signals. This page covers what they are, what the research actually says, and how we handle them as a medical practice. Our library of physician-reviewed guides is here too, free for the asking.
- ✓ The needle-free peptide patch — no injections, no mixing
- ✓ Patented transdermal delivery system
- ✓ Prescribed within a physician-supervised plan
How are peptides taken?
Clinical peptides come in several forms: subcutaneous injection, capsules, troches that dissolve under the tongue, nasal sprays, and transdermal options like our needle-free Peptide Patch. None of them is "best." Absorption differs by molecule, and the right format depends on the peptide and on you. Your physician picks it with you after your evaluation.
One thing we'll say as plainly as we can. GLP-1 medications like semaglutide and tirzepatide are injection-only. There's no patch, no cream, no needle-free version, and a provider offering you one is a reason to walk away. Our Peptide Patch is for select non-GLP-1 peptides.
Educational information only, not medical advice. Individual results vary. Medically reviewed by Dr. Hootan Zandifar, MD, Medical Director, Regen Therapy MD (UCLA David Geffen School of Medicine).
Why physician supervision matters
The medicine comes firstAn evaluation and baseline labs before anything is prescribed.
Test, don't guessFollow-up labs, so the plan gets adjusted on real data instead of guesswork.
Verified sourcingLicensed U.S. pharmacies with batch-specific Certificates of Analysis.
Skip the gray marketVials stamped "for research use only," sourced from who knows where, dosed by forum thread. That's the corner of this field that deserves your suspicion.All of it is overseen by Dr. Hootan Zandifar, MD, Medical Director (UCLA David Geffen School of Medicine). Meet the team →
What are peptides?
The Patient Library
Our Patient Library goes deeper than a web page should. Eleven physician-reviewed guides, one per treatment. Each covers what it is, how it works, what the published research shows, how it's given, and what to expect. Every source is listed, and the U.S. regulatory status is printed right on the cover.
The September 2026 edition: BPC-157, TB-500, CJC-1295 & Ipamorelin, GHK-Cu, Epitalon, Thymosin Alpha-1, SS-31 (Elamipretide), PT-141 for Men, NAD+ Therapy, Semaglutide, and Tirzepatide.
Each guide ends with the questions we think you should ask us at your consultation. They're conversation starters, not instructions. Tell us where to send it and the library's yours.
You'll get educational emails from Regen Therapy MD now and then. We never sell your information, and unsubscribing takes one click. Privacy Policy.
Where our peptides come from: 503A and 503B, all U.S.
Compounded peptides in this country come from two kinds of licensed facilities, and we use both. A 503A pharmacy compounds for one patient at a time, from that patient's prescription, under state board of pharmacy licensure. A 503B outsourcing facility is FDA-registered and produces larger batches under cGMP, the same manufacturing standard drug makers follow. Which one fills your prescription depends on what your physician orders.
What doesn't change: everything we prescribe is sourced from licensed U.S. facilities, and every batch comes with a Certificate of Analysis. No gray-market vials. No overseas mystery powder.
What have peptides been studied for?
Tissue repair and recoverySome of the most-studied peptides in the field sit here, a few with decades of published literature behind them.
Explore in your consult →
SleepSeveral peptides have been studied for sleep. The depth of that research varies, and we'll tell you where it's thin.
Explore in your consult →
Sexual health
Skin and hairStudied for skin quality and hair, much of it early-stage research.
Explore in your consult →
Body composition and metabolic healthStudied for body composition and metabolic markers. Some peptides have deep literature here, others don't.
Explore in your consult →
CognitionStudied for cognition and focus. Animal data and early human reports make up much of it.
Explore in your consult →Two things we want on the record. Most compounded peptides are investigational, not FDA-approved. And "studied for" is not "proven to." A good peptide program starts with what the literature actually supports, checks it against your history and your labs, and is honest with you about the gap between the two.
Curious? Start with a conversation.
If you're wondering whether any of this fits your situation, the first step is a consultation, not a purchase. Bring your questions. Or read a few guides first and bring better ones. We see patients in Beverly Hills and Santa Monica, and by telehealth where our physicians are licensed.
Book a consultation →Ships the lower 48 where licensed · Beverly Hills · Santa Monica · Telehealth
Frequently asked questions about peptides
What exactly is a peptide?
A short chain of amino acids, usually 2 to 50, that your body uses as a signal. Plenty of natural hormones are peptides. Insulin is the famous one. Therapeutic peptides are chosen because they interact with a specific receptor or pathway.
Are peptides FDA-approved?
Some specific peptide drugs are, for specific uses. Most compounded peptides used in wellness settings aren't. They're investigational. We'll tell you the regulatory status of anything we discuss in your plan, and it's printed on the cover of every guide in our library.
Is the Peptide Patch as effective as injections?
We don't claim that, and we'd be careful with anyone who does. Transdermal peptide delivery is being studied, and what's known varies by molecule. The patch is a needle-free option for select non-GLP-1 peptides inside a supervised plan. Your physician will tell you what's established for the specific peptide on the table. Individual results vary.
Do I need lab work before starting?
Yes. Baseline bloodwork is how a physician personalizes a plan and screens for reasons not to proceed at all. Test, don't guess. That holds for every format, patch included.
How do I get the guides?
Put your name and email in the form above and we'll send you the library. Eleven guides, physician-reviewed, written in plain English, every source cited.
The information on this page is educational only and is not medical advice, diagnosis, or treatment. Peptide therapies discussed here are not a treatment or cure for any disease, and most compounded peptides are investigational and not FDA-approved. Statements about areas of research describe published scientific interest, not proven outcomes. Individual results vary. Whether any therapy is appropriate for you can only be determined by a licensed physician after a medical evaluation and laboratory testing. GLP-1 medications such as semaglutide and tirzepatide are injection-only and are not available in patch form. Medically reviewed by Dr. Hootan Zandifar, MD, Medical Director, Regen Therapy MD (UCLA David Geffen School of Medicine).