{"id":211,"date":"2026-08-13T10:59:18","date_gmt":"2026-08-13T10:59:18","guid":{"rendered":"https:\/\/www.peptidelab.co.il\/weight-loss-injections\/"},"modified":"2026-08-23T10:45:27","modified_gmt":"2026-08-23T10:45:27","slug":"weight-loss-injections","status":"publish","type":"post","link":"https:\/\/israelpeptides.co.il\/en\/weight-loss-injections\/","title":{"rendered":"Peptide-based weight-loss injections (GLP-1): the scientific background \u2014 Ozempic, Mounjaro and Retatrutide"},"content":{"rendered":"<p>&quot;<strong>weight-loss injections<\/strong>\" have become one of the most talked-about topics in the world of weight and metabolism. Behind this name stands a family of peptides \u2014 agonists of the GLP-1 receptor and beyond. Here we explain the scientific background: what they are, how they are studied to act, and the difference between Ozempic, Mounjaro and Retatrutide.<\/p>\n<p style=\"background:#eef3fa;border-inline-start:3px solid #1f6feb;border-radius:8px;padding:12px 16px;color:#3a4658;font-size:.95em;\">The information in this article is for study purposes only and does not constitute medical advice or a recommendation, and does not call for the use of any compounds. All products on the site are intended for research use only.<\/p>\n<h2>What are \"weight-loss injections\"?<\/h2>\n<p>The term refers mainly to a family of compounds that mimic hormones of the digestive system, chief among them agonists of the receptor <strong>GLP-1<\/strong>. They were developed and studied in the context of appetite regulation and blood sugar levels.<\/p>\n<h2>How does it work? The mechanism in brief<\/h2>\n<p>The hormone GLP-1 is involved in the feeling of satiety, in slowing gastric emptying and in blood sugar regulation. Compounds that mimic it have been examined for their effect on appetite and energy balance. Some of the newer compounds act on more than one pathway simultaneously.<\/p>\n<figure class=\"pl-blog-img\" style=\"margin:24px auto;text-align:center;max-width:640px;\"><img decoding=\"async\" src=\"https:\/\/israelpeptides.co.il\/wp-content\/uploads\/2026\/08\/retatrutide-vial-1024x1024.jpg\" alt=\"\u05d1\u05e7\u05d1\u05d5\u05e7\u05d5\u05df \u05e8\u05d8\u05d0\u05d8\u05e8\u05d5\u05d8\u05d9\u05d9\u05d3 20mg \u05dc\u05de\u05d7\u05e7\u05e8\" loading=\"lazy\" style=\"max-width:100%;height:auto;border-radius:12px;box-shadow:0 3px 16px rgba(20,40,80,.10);\" \/><figcaption style=\"font-size:.85em;color:#5a6b82;margin-top:8px;\">Retatrutide \u2014 a triple agonist studied in the metabolic field<\/figcaption><\/figure>\n<h2>The family: from Semaglutide to Retatrutide<\/h2>\n<ul>\n<li><strong>Semaglutide<\/strong> \u2014 a single GLP-1 agonist. Known by the brand names <strong>Ozempic<\/strong> and<strong>Wegovy<\/strong>.<\/li>\n<li><strong>Tirzepatide<\/strong> \u2014 a dual agonist (GLP-1 + GIP). Known by the brand name <strong>Mounjaro<\/strong>.<\/li>\n<li><strong><a href=\"\/en\/retatrutide\/\">Retatrutide<\/a><\/strong> \u2014 a triple agonist (GLP-1 + GIP + Glucagon), still in the research stage. <a href=\"\/en\/retatrutide\/\">full guide here<\/a>.<\/li>\n<\/ul>\n<h2>And what about \"fat burning\"?<\/h2>\n<p>The idea of increased energy expenditure is mainly linked to the Glucagon pathway, which has been examined in newer compounds such as Retatrutide. It is important to remember: this is an area of active research, and the reported results were achieved in controlled clinical trials and under supervision \u2014 not as a \"magic solution\".<\/p>\n<h2>Regulatory status and safety<\/h2>\n<p>Some of the compounds (such as semaglutide and tirzepatide) are approved for supervised medical use in various countries, while others (such as Retatrutide) are still experimental. These compounds are sold for research purposes only. Any decision regarding weight management should be made in consultation with a licensed physician.<\/p>\n<h2>Frequently asked questions<\/h2>\n<p><strong>What is the difference between Ozempic and Mounjaro?<\/strong><br \/>The number of receptors: Ozempic (Semaglutide) acts on one receptor, Mounjaro (Tirzepatide) on two.<\/p>\n<p><strong>What is the newest in the field?<\/strong><br \/>Retatrutide \u2014 a triple agonist that is in research. <a href=\"\/en\/retatrutide\/\">read about it in the full guide<\/a>.<\/p>\n<p>For more information about the research compounds, go to<a href=\"\/\">the shop<\/a> and to <a href=\"\/en\/faq\/\">the FAQ page<\/a>.<\/p>\n<p class=\"pl-buy-cta\">Not sure <a href=\"\/en\/buy-peptides-israel\/\">where to buy peptides<\/a> with confidence? We've written a guide to choosing a reliable supplier.<\/p>\n<p><em>The information in this article is general and for study purposes only and does not constitute medical advice. The products on the site are intended for research use only.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>&quot;\u05d6\u05e8\u05d9\u05e7\u05d5\u05ea \u05d4\u05e8\u05d6\u05d9\u05d4&quot; \u05d4\u05e4\u05db\u05d5 \u05dc\u05d0\u05d7\u05d3 \u05d4\u05e0\u05d5\u05e9\u05d0\u05d9\u05dd \u05d4\u05de\u05d3\u05d5\u05d1\u05e8\u05d9\u05dd \u05d1\u05e2\u05d5\u05dc\u05dd \u05d4\u05de\u05e9\u05e7\u05dc \u05d5\u05d7\u05d9\u05dc\u05d5\u05e3 \u05d4\u05d7\u05d5\u05de\u05e8\u05d9\u05dd. \u05de\u05d0\u05d7\u05d5\u05e8\u05d9 \u05d4\u05e9\u05dd \u05d4\u05d6\u05d4 \u05e2\u05d5\u05de\u05d3\u05ea \u05de\u05e9\u05e4\u05d7\u05d4 \u05e9\u05dc \u05e4\u05e4\u05d8\u05d9\u05d3\u05d9\u05dd \u2014 \u05d0\u05d2\u05d5\u05e0\u05d9\u05e1\u05d8\u05d9\u05dd \u05dc\u05e7\u05d5\u05dc\u05d8\u05df GLP-1 \u05d5\u05de\u05e2\u05d1\u05e8 \u05dc\u05d5. \u05db\u05d0\u05df \u05e0\u05e1\u05d1\u05d9\u05e8 \u05d0\u05ea \u05d4\u05e8\u05e7\u05e2 \u05d4\u05de\u05d3\u05e2\u05d9: \u05de\u05d4 \u05d4\u05df, \u05d0\u05d9\u05da \u05d4\u05df \u05e0\u05d7\u05e7\u05e8\u05d5\u05ea \u05dc\u05e4\u05e2\u05d5\u05dc, \u05d5\u05de\u05d4 \u05d4\u05d4\u05d1\u05d3\u05dc \u05d1\u05d9\u05df \u05d0\u05d5\u05d6\u05de\u05e4\u05d9\u05e7, \u05de\u05d5\u05e0\u05d2'\u05e8\u05d5 \u05d5\u05e8\u05d8\u05d0\u05d8\u05e8\u05d5\u05d8\u05d9\u05d9\u05d3. \u05d4\u05de\u05d9\u05d3\u05e2 \u05d1\u05de\u05d0\u05de\u05e8 \u05d4\u05d5\u05d0 \u05dc\u05e6\u05d5\u05e8\u05db\u05d9 \u05dc\u05d9\u05de\u05d5\u05d3 \u05d1\u05dc\u05d1\u05d3 \u05d5\u05d0\u05d9\u05e0\u05d5 \u05de\u05d4\u05d5\u05d5\u05d4 \u05d9\u05d9\u05e2\u05d5\u05e5 \u05d0\u05d5 \u05d4\u05de\u05dc\u05e6\u05d4 \u05e8\u05e4\u05d5\u05d0\u05d9\u05ea, \u05d5\u05d0\u05d9\u05e0\u05d5 \u05e7\u05d5\u05e8\u05d0 \u05dc\u05e9\u05d9\u05de\u05d5\u05e9 [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":216,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[37],"tags":[],"class_list":["post-211","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-weight-loss"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/israelpeptides.co.il\/en\/wp-json\/wp\/v2\/posts\/211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/israelpeptides.co.il\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/israelpeptides.co.il\/en\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/israelpeptides.co.il\/en\/wp-json\/wp\/v2\/comments?post=211"}],"version-history":[{"count":4,"href":"https:\/\/israelpeptides.co.il\/en\/wp-json\/wp\/v2\/posts\/211\/revisions"}],"predecessor-version":[{"id":365,"href":"https:\/\/israelpeptides.co.il\/en\/wp-json\/wp\/v2\/posts\/211\/revisions\/365"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/israelpeptides.co.il\/en\/wp-json\/wp\/v2\/media\/216"}],"wp:attachment":[{"href":"https:\/\/israelpeptides.co.il\/en\/wp-json\/wp\/v2\/media?parent=211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/israelpeptides.co.il\/en\/wp-json\/wp\/v2\/categories?post=211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/israelpeptides.co.il\/en\/wp-json\/wp\/v2\/tags?post=211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}