When reading scientific information about peptides, you’ll often encounter the word: bioavailability. It’s an important concept in pharmacology—but also one that’s frequently misunderstood. A compound can be biologically active in a laboratory experiment yet have very different behaviour when introduced into a living system. Why? Because before a molecule can interact with its intended biological...Read More

When reading about peptides and other research compounds, one word appears surprisingly often: selectivity. A molecule may be described as: highly selective receptor-selective or: more selective than an earlier compound. At first glance, that sounds simple. Surely a selective molecule just interacts with one target? Not quite. In pharmacology, selectivity is more nuanced. And understanding...Read More

CJC-1295 vs ipamorelin — what’s actually the difference? These two research peptides are mentioned together so frequently that it’s easy to assume they’re variations of the same compound. They’re not. Both are associated with research into the growth-hormone axis, but they approach that system through different biological pathways. CJC-1295 is associated with growth-hormone-releasing hormone signalling....Read More

BPC-157 and TB-500 are two of the most frequently compared research peptides. They’re often mentioned in the same conversations and are sometimes grouped together under terms such as “recovery peptides” or “repair peptides.” But scientifically, they’re very different molecules. They have different origins, different amino-acid sequences and different proposed biological mechanisms. And despite the extraordinary...Read More

Are GLP-1s peptides? Yes — but there’s an important distinction. GLP-1 itself is a naturally occurring peptide hormone. Several of the best-known medicines that target the GLP-1 system, including semaglutide, are also peptide-based molecules. Tirzepatide is another peptide-based drug, although it acts through both GIP and GLP-1 receptors. So why do people constantly talk about:...Read More

Are peptides supplements? Usually, when people ask this question, they’re actually comparing two very different things: research or pharmaceutical peptides and: ordinary dietary supplements such as vitamins, minerals, amino acids, protein powders and creatine. They’re not the same category. The confusion is understandable because the word peptide now appears everywhere from collagen supplements and skincare...Read More

What’s the difference between peptides and TRT? Peptides and testosterone replacement therapy are increasingly discussed together online. But they aren’t two versions of the same thing. TRT involves providing testosterone from outside the body. Peptides are amino-acid molecules, and different peptides can interact with completely different biological pathways. Some peptides are studied in relation to...Read More

What’s the difference between HGH and peptides? It’s a common question because human growth hormone and certain peptides are frequently discussed together. But there’s an important problem with the question: HGH itself is actually a peptide hormone. What people usually mean when they search “HGH vs peptides” is: human growth hormone itself versus: peptides that...Read More

How are peptides actually made? We often describe peptides as chains of amino acids. But that raises an obvious question: How do scientists turn individual amino acids into one precise peptide sequence? For many research peptides, the answer is a process called: peptide synthesis. Modern laboratories can construct peptides by joining amino acids together in...Read More

Why can’t most peptides simply be made into tablets or capsules? It’s one of the most obvious questions in peptide science. If ordinary medicines can often be swallowed as tablets, why is oral delivery such a major challenge for peptides? The answer comes down to biology. The digestive system is extremely good at destroying the...Read More