<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>PeptCycle — Blog</title><description>Articles on peptides: mechanism of action, research and tracking practice.</description><link>https://www.peptcycle.com/</link><language>en-US</language><item><title>BPC-157: What the Evidence Actually Shows</title><link>https://www.peptcycle.com/en/blog/bpc-157/</link><guid isPermaLink="true">https://www.peptcycle.com/en/blog/bpc-157/</guid><description>What BPC-157 is, why the published research is almost entirely preclinical, its FDA and WADA status, and what the July 2026 advisory vote did not change.</description><pubDate>Wed, 29 Jul 2026 00:00:00 GMT</pubDate><category>BPC-157</category><category>Preclinical</category><category>Clinical research</category><category>Regulation</category><category>Evidence</category></item><item><title>Injection Site Rotation and Lipohypertrophy</title><link>https://www.peptcycle.com/en/blog/injection-site-rotation/</link><guid isPermaLink="true">https://www.peptcycle.com/en/blog/injection-site-rotation/</guid><description>What lipohypertrophy is, why injection guidance insists on rotating sites, and what the FITTER recommendations say about spacing, needle reuse and inspection.</description><pubDate>Wed, 29 Jul 2026 00:00:00 GMT</pubDate><category>Practice</category><category>Injection</category><category>Safety</category><category>Skin</category></item><item><title>Peptide Half-Life: Why Schedules Differ</title><link>https://www.peptcycle.com/en/blog/peptide-half-life/</link><guid isPermaLink="true">https://www.peptcycle.com/en/blog/peptide-half-life/</guid><description>Why some peptides are injected daily and others weekly — DPP-4 degradation, albumin binding, and what half-life means for steady state and a missed dose.</description><pubDate>Wed, 29 Jul 2026 00:00:00 GMT</pubDate><category>Pharmacokinetics</category><category>GLP-1</category><category>Practice</category><category>Schedule</category></item><item><title>Reconstitution and Concentration: The Arithmetic</title><link>https://www.peptcycle.com/en/blog/peptide-reconstitution/</link><guid isPermaLink="true">https://www.peptcycle.com/en/blog/peptide-reconstitution/</guid><description>What reconstitution does to a lyophilised peptide, why concentration is the only number that matters, and how mg, ml and syringe units relate to each other.</description><pubDate>Wed, 29 Jul 2026 00:00:00 GMT</pubDate><category>Practice</category><category>Storage</category><category>Concentration</category><category>Calculator</category></item><item><title>Semaglutide: What It Is and How It Works</title><link>https://www.peptcycle.com/en/blog/semaglutide/</link><guid isPermaLink="true">https://www.peptcycle.com/en/blog/semaglutide/</guid><description>What semaglutide is, how it acts on the GLP-1 receptor, and what the STEP and SELECT trials found about body weight and cardiovascular outcomes.</description><pubDate>Wed, 29 Jul 2026 00:00:00 GMT</pubDate><category>GLP-1</category><category>Incretins</category><category>Clinical research</category><category>Weight</category></item><item><title>Peptide Storage: What Actually Degrades Them</title><link>https://www.peptcycle.com/en/blog/peptide-storage/</link><guid isPermaLink="true">https://www.peptcycle.com/en/blog/peptide-storage/</guid><description>Why peptides are fragile molecules, what breaks them down — heat, light, freeze-thaw cycles and agitation — and what the official labelling says.</description><pubDate>Tue, 28 Jul 2026 00:00:00 GMT</pubDate><category>Storage</category><category>Stability</category><category>GLP-1</category><category>Practice</category></item><item><title>Tirzepatide: What It Is and How It Works</title><link>https://www.peptcycle.com/en/blog/tirzepatide/</link><guid isPermaLink="true">https://www.peptcycle.com/en/blog/tirzepatide/</guid><description>What tirzepatide is, how it activates the GIP and GLP-1 receptors at the same time, and what the SURPASS and SURMOUNT trials actually found.</description><pubDate>Mon, 20 Jul 2026 00:00:00 GMT</pubDate><category>GLP-1</category><category>GIP</category><category>Incretins</category><category>Clinical research</category></item></channel></rss>