I previously wrote in favor of peptides and the fact that the black/gray market is full of counterfeit versions of these substances. This is indeed true. I tested many of them on myself (which of your doctors do this? 
), looked for studies that included test purchases and chromatography testing, and did a lot of analysis. I came to some interesting conclusions that I've already confirmed in practice:
There are working peptides on the black/gray market, but only those with a short sequence. What does this mean? Peptides are proteins composed of amino acids. Some amino acids you're familiar with from the sports industry (like arginine), while others are unknown even to you.
The point is that their sequence produces a protein, which functions in the body like a key for receptors, while the receptors themselves (also made of amino acids) act as a keyhole. That's roughly speaking; in reality, it's more complex. But that's not really what this post is about. It's about how short peptides, those with few amino acids, are much easier to synthesize in the lab!
Another point is the breakdown time of peptides in solution and in the body. Some peptides have a lifespan in the body of minutes. So, whether the peptide is short or not, if it breaks down in minutes or hours when diluted (or in the body), its systemic effect on the body is negligible!
So, if you want to buy effective peptides, always check two things on Google or in the GPT chat: their amino acid sequence and breakdown time. Also, if possible, buy PEGylated peptides. This is a chemical form that slows peptide breakdown. Here's a description of how to do it:
Let's say you want to gain muscle mass and you really have the necessary indications, not supplements . The following peptides are available for muscle growth: GHRP-2, GHRP-6, Ipamorelin, Hexarelin, CJC-1295, IGF-1, MGF, Sermorelin, Follistatin, ACE-031 .
Of these, short peptides (up to 30 amino acids) include GHRP-2, GHRP-6, Ipamorelin, Hexarelin, and MGF. There's often no point in counterfeiting these peptides, meaning they may actually work. But take Follistatin and ACE-031—these are incredibly large peptides; for example, Follistatin is 315 amino acids long! Making something like that in a lab is like creating a virus. It's not science fiction, as some idiots once told you during quarantine, but it's a complex and expensive undertaking.
So, peptides with 2-30 amino acids are possible to buy, BUT it's not very practical. Because their degradation period is short! This means you need to inject them frequently and buy a lot. What's the solution? Buy peptides with chemical modifications to protect against degradation, often by pegylation or albumin binding. This is the prefix PEG or DAC. For example, I use PEG Ipamorelin + PEG MGF—a peptide with chemical protection against rapid degradation. They can be stored in the refrigerator after proper dissolution for up to 20 days. And their degradation period in the body is increased several times. How to dissolve such peptides is also an interesting question; water alone is not enough; the peptides will spoil within a week. To prevent this, I use the drug Arthrox. It's a chondroprotector, but it contains the preservative benzyl alcohol, and its pH is suitable for dissolving and long-term storage of peptides.
P.S.
The peptides in the photo are working; I used them to break through the 80 kg weight plateau. However, they may cause allergies in people with poor health. They are also likely Chinese, and the level of purification may be poor. Therefore, please remember that I do not recommend repeating my experience, and all information is for general information purposes only.
