Stack

@bijans Yes

@stackapp Got it. So are there non-Chinese manufacturers of most of the common non-GLP peptides? Will be eagerly watching what you guys build and rooting for you.

If you have been following the peptide space you have probably seen the terms compounding pharmacy, 503A, and 503B thrown around. Here is what they actually mean and why they matter. What is a compounding pharmacy? A compounding pharmacy custom-manufactures medications that are not commercially available or need to be tailored to a specific patient. Think a specific dose, a specific delivery method, or a combination of ingredients that no mass-produced drug covers. This is how most peptides are legally prescribed and dispensed in the US today. 503A vs 503B 503A pharmacies compound on a patient-by-patient basis. A physician writes a prescription for a specific patient, the pharmacy compounds it for that individual. These are your traditional compounding pharmacies operating under state pharmacy board oversight. 503B outsourcing facilities operate at a larger scale. They can produce larger batches without patient-specific prescriptions and are subject to FDA oversight and cGMP manufacturing standards, the same standards applied to commercial drug manufacturers. Higher quality controls, higher scale. Why this matters for peptides Peptides like NAD+, Sermorelin, and the compounds coming off the Category 2 list as FDA regulations evolve will be primarily distributed through 503A and 503B pharmacies. There is no Pfizer making these. The compounding pharmacy is the manufacturer, the quality control, and the distribution channel all in one. Where this goes Right now compounding pharmacies mostly operate in silos. A physician has a relationship with one or two pharmacies, patients have no visibility into pricing or quality differences between them, and there is zero competitive pressure keeping prices honest. That changes when you aggregate them. When licensed compounding pharmacies compete side by side on price, quality, and experience, prices fall and standards rise. That is the version of this market that makes peptides accessible to everyone, not just people who can afford a $500 wellness clinic membership. And longer term, compounding pharmacies are positioned to become the infrastructure for truly personalized medicine. Not just compounding peptides, but compounding your peptides, formulated around your genetics, your bloodwork, your specific biology. That future requires competition and transparency to get there. That is what we are building toward at Stack.

@bijans Some will some won’t It will be our job to figure that out for you

@stackapp Here's my question - won't 503A & 503B compounding pharmacies source most peptides from the exact same 4–5 Chinese API manufacturers as the gray market? The only real differences: mandatory USP <=797 testing. Same supply chain - just higher inspection and testing bar?

AI prescribing just got legalized in Utah. This is the beginning of the collapse of the physician consult cost. When that cost goes to zero, personalized health optimization stops being a luxury for people who can afford a $500 clinic visit and becomes accessible to everyone. Peptides, longevity protocols, personalized therapeutics. All of it is coming to the masses. The infrastructure is being built right now.

Excited to bring health optimization to the masses

i think a lot of people are going to regret injecting themselves with the peptides in a couple years

@VinnyJay87 @remedyplace Love that Some people will never reconstitute tho imo

@stackapp @remedyplace I’ll keep reconstituting gray peptides in my kitchen and use reusable pens. Not interested in their 20x markup.

The moment compounding pharmacies start producing peptide pens at scale is when mainstream adoption goes from early majority to everyone. Peptides are already breaking into the mainstream. That is not the question anymore. The question is what removes the last barrier stopping the next wave of people from participating. And the answer is the needle. Most people will never reconstitute a vial, calculate a dose in micrograms, and inject themselves. That is a hard ask for anyone outside the biohacker community. Pre-filled pens solve that entirely. Remedy Place just launched a smart NAD pen in partnership with a UK-based pharmaceutical manufacturer. Ships direct to consumers without a prescription. $500 for a 30-day supply. Orders already coming in from LA, New York, Denver, South Florida. The founder is openly planning peptide pens next, specifically a BPC-157 and TB-500 blend, pending FDA action on Category 2 removals. When US compounding pharmacies start building this infrastructure at scale across the full peptide catalog, the addressable market expands by an order of magnitude. The person who would never touch a syringe will use a pen. That version of this space reaches hundreds of millions of people. We are closer to it than most realize.

@Melt_Dem 1000% The masses should have accesses to the tools necessary for health optimization

the replies to this are fascinating i'm frankly surprised that so many people are anti choice. feels strangely similar to the backlash against Bitcoin. i am strongly in favor of enabling more degrees of freedom for individuals in the face of increasing government overreach 🫡

@shaunt___ @remedyplace Let me know how it is!

@stackapp @remedyplace Going to stop by the remedy place on sunset to check it out. Pens make everything easier

I see too many people treating peptides like supplements. It is costing them at least 50% of their results. Fish oil is forgiving. Skip a few days, come back, no harm done. Peptide protocols do not work that way. These are compounds with specific half-lives, receptor dynamics, and cumulative effects that depend on consistent dosing windows. When you miss doses mid-cycle, you are not just missing that day. You are disrupting the entire signaling pattern the protocol depends on. The people getting real results from peptides are the ones tracking everything. Dose, timing, cycle length, how they feel, what is working. Not because it is fun to log data but because without it you are flying blind on compounds that demand precision. Treat them like the serious tools they are.

@RektCaprisun Yes

People want instant results and are done waiting for the green light from doctors. They’re sharing protocols, results, and receipts peer to peer. The question isn't whether people will take control of their own biology. 
It's whether you're building for them when they do.

@jefftangx peptides

Peptides

@rorynotsorry 🤝

@stackapp I’m gonna send a message. I’m looking for interesting people doing interesting things to interview.

This article is spot on. The Peptide market is going to diverge. Compounding and Gray. Ironically, I think the feeding is going to go in both directions with Gray customers going to compounding as the price comes down, and compounding customer is going to Gray because it’s just always gonna be cheaper.

@PGC1a_RB None will make you gain muscle anyone telling you otherwise is wrong

What peptides will make you gain muscle? The ones you get from digesting protein containing food + enough leucine

@JayCampbell333 Check out my article on both markets and how the will co-exist x.com/stackapp/statu…

I was at the Arnold Classic when my phone started blowing up. Peptide Sciences the OG of the research space, had shut down. Influencers. Telehealth gurus. Doctors on TikTok. All screaming the same thing: "It's over." I know the real reason it shut down. I AM not sharing it. But I WILL tell you who's lying to you, who profits from your panic And why your peptides are about to cost 10x more🧵 ──────────────────────── Who profits from your fear? The fear-mongering that erupted after Peptide Sciences went down? Came from the exact people who profit when you panic. Compounded peptides cost dramatically more than research peptides. Every research company that disappears is money in THEIR pocket. So when telehealth platforms and doctors go live saying "BioLongevity Labs is next" ──────────────────────── Here's what I know about Peptide Sciences. The real reason is private. What it is NOT: → A crackdown on research peptides → Research peptides becoming illegal → A sign that other research companies are next "They are not coming back but it has NOTHING to do with the idea that research was shut down." Anyone telling you otherwise is lying. And they know it. "All these people saying research companies are going down are full of shit. They have no idea what they're talking about." I said it publicly. I'll say it again. Same influencers. Same telehealth doctors. Same compounded pharmacy defenders who've been hoping for research's demise for years. "For all of you wishing for the demise of research you've got another thing coming." What IS actually under attack — and it's not research. FDA sent ~30 warning letters last Thursday and Friday. Not to research companies. To: → Bad actors: bunk, counterfeit, underdosed, non-sterile peptides → 503A + 503B compounders still pushing compounded GLP-1s The bar is rising: 99% purity, sterility, GMP-compliant facilities. Good actors get stronger. Bad actors get cut. That's it. Legal status: Research peptides are legal. Let's be crystal clear. Gray area — yes. Illegal — no. Legal with: → Chain of custody → Lot + batch numbers → Verification → Certificates of authenticity "It is a perfectly legal way to do business." The people telling you otherwise are selling you the compounded version at 10x the cost. The RFK bombshell: Now — the part nobody is talking about loudly enough. February 27th. ──────────────────────── RFK Jr. on The Joe Rogan Experience. He called the FDA's September 2023 peptide classification ILLEGAL. Not misguided. Not problematic. ILLEGAL. The FDA can only restrict a compound with a legitimate safety signal. There wasn't one. RFK's exact words: "We created the black market." ──────────────────────── What RFK announced: → ~14 of 19 peptides on FDA's Category 2 list moving back to Category 1 → Category 1 = legally scriptable, available through compounders + clinically → Decision expected within weeks → Goal: public access through ethical suppliers Biggest regulatory shift in the peptide space since 2023. Most users have no idea it's coming. ──────────────────────── Price explosion: What happens the moment that rollback hits: → Millions rush to doctors for peptide prescriptions overnight → Doctors flood in to cash in on the peptide boom → Demand explodes. Supply can't keep up. → Compounded peptide prices EXPLODE "Supply and demand. As demand goes up, supply shrinks, cost goes up." "You're gonna see a massive increase in cost." This isn't speculation. This is basic economics. ──────────────────────── The smart money: Here's what nobody is saying out loud. Once peptides flip from Category 2 to Category 1 — Compounded becomes the mainstream option. Mainstream means clinical markups. Doctor's fees. Monthly subscriptions. Research peptides — available now, legal now, at current prices — Become the smart money. The window between now and that rollback IS the window. ──────────────────────── The bottom line: → Peptide Sciences shut down — NOT a research crackdown → Fear-mongering directly profits the compounded space → FDA's 2023 ban called ILLEGAL by a sitting US official on Joe Rogan → 14 peptides going back to legally scriptable — within weeks → Compounded prices will explode when rollback hits → Research peptides remain legal The space isn't dying. It's going mainstream. That changes everything ──────────────────────── 45% off on all products on Biolonevity Labs. Comment "peptide" below. I'll DM you the exclusive discount code directly. biolongevitylabs.com

@Melt_Dem just the start

my only angel investment last year was a peptide company PEOPLE WANT TO HAVE AGENCY OVER THEIR HEALTH i couldn’t be more enthusiastic about the current trend of self instructed health maxxing - let the people decide

@Jason______A @Jason8380562276 @DrJesseMorse Yup - we want the price to go to zero That’s the idea of what we doing

@Jason8380562276 @DrJesseMorse @stackapp Pharmacies wont sell direct, they dont want that hassle. Your correct on race to the bottom though.

Excited to announce that I have become the Chief Medical Advisor for @stackapp which will be an all-in-one platform/app where people can go to get evaluated by a doctor who is knowledgeable and experienced in peptides, review their labs, and prescribe compounded peptides. Then the app will track which peptides, medications, and supplements the person is on, and the patient will be able to report their symptoms and side effects. No more worrying about buying ‘research’ peptides from some random gray/black market website. This will massively expand access to care and more importantly lower costs for people looking to optimize their health. For practitioners looking to learn about peptides, how to treat patients with peptides, and prescribe them, we will be creating a reasonably priced Peptide Certification Course for Practitioners designed by me! If you’re interested in signing up, there is a waiting list. The future of personalized healthcare and peptides is here. I’m very excited to get started!