{"id":13078,"date":"2024-12-18T12:42:37","date_gmt":"2024-12-18T12:42:37","guid":{"rendered":"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/?p=13078"},"modified":"2026-06-12T12:21:33","modified_gmt":"2026-06-12T12:21:33","slug":"serious-side-effects-glp-1s","status":"publish","type":"post","link":"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/weight-loss\/serious-side-effects-glp-1s\/","title":{"rendered":"How to Spot Serious Side Effects of GLP-1 Weight Loss Jabs"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">You might be familiar with some of the common side effects of GLP-1 weight loss medication \u2013 nausea, bloating and constipation. They affect around one in 10 patients and they\u2019re usually mild and manageable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, there are some more serious side effects and complications to be aware of. While they aren&#8217;t as common, you need to know what they are so you can get urgent medical attention if required.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To keep you safe and healthy, this article outlines what they are \u2013 and the symptoms to look out for.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-glp-1-holiday-risks\">GLP-1 Holiday Risks<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Thinking of taking a break from <a href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/weight-loss\/mounjaro\/\">Mounjaro<\/a>, <a href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/online-doctor\/weight-loss\/wegovy\/\">Wegovy<\/a> or <a href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/online-doctor\/weight-loss\/saxenda\/\">Saxenda<\/a>? This is common around Christmas and New Year, as patients want to indulge in festive feasts and alcoholic drinks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, we advise you not to do this. When you <a href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/weight-loss\/pause-glp-1-christmas\/\">stop using GLP-1<\/a> weight loss injections the level of medication in your body drops. So the same dose could be too high for your system when you start taking it again. This increases your risk of serious adverse effects, including pancreatitis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you plan to take a break from your medication, please tell your healthcare provider. They\u2019ll be able to guide you through the process in the safest way possible.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Misusing your medication in other ways \u2013 like \u201c<a href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/weight-loss\/microdosing-glp-1s-is-it-a-good-idea\/\">microdosing<\/a>\u201d or using the \u201c<a href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/weight-loss\/mounjaro\/mounjaro-fifth-dose-is-it-safe\/\">fifth dose<\/a>&#8221; \u2013 can also be risky. Not using the pen as prescribed also makes it harder for your healthcare provider to support you, as they won\u2019t know how much you\u2019ve injected.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The best thing you can do is follow the manufacturer&#8217;s guidance and stick to the dosing schedule your healthcare provider has given you. And if you\u2019re concerned about balancing festive fun and GLP-1s, <a href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/weight-loss\/christmas-on-glp-1\/\">this article<\/a> gives you tips on how to stay on track while enjoying Christmas and New Year celebrations.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-side-effects-of-glp-1s-you-shouldn-t-ignore\">Side Effects of GLP-1s You Shouldn\u2019t Ignore<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-pancreatitis\">Pancreatitis<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The most serious side effects of GLP-1s are pancreatitis and gallbladder disorders. <a href=\"https:\/\/www.gov.uk\/drug-safety-update\/glp-1-receptor-agonists-reminder-of-the-potential-side-effects-and-to-be-aware-of-the-potential-for-misuse#risk-of-adverse-drug-reactions-associated-with-glp-1ra-medicines\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" rel=\"dofollow\" >According to the MHRA<\/a>, these can occur in between one in 100 and one in 10,000 patients, depending on the type of GLP-1 weight loss jab you are using.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pancreatitis is when the pancreas becomes inflamed. It requires urgent medical attention and can cause complications. In some cases, it can be fatal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Please seek urgent medical attention if you have the following symptoms:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Severe abdominal pain. This is the main symptom of pancreatitis. It can feel like sudden, sharp, or burning pain in the upper abdomen, which often radiates to the back. It can also get worse after eating<\/li>\n\n\n\n<li>Persistent nausea \u2013 with or without vomiting<\/li>\n\n\n\n<li>Fever<\/li>\n\n\n\n<li>Elevated heart rate<\/li>\n\n\n\n<li>Jaundice \u2013 a yellowing of the skin<\/li>\n\n\n\n<li>Bloating<\/li>\n\n\n\n<li>Tender abdomen that\u2019s sensitive to touch<\/li>\n\n\n\n<li>Fatty stools<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"\u26a0\ufe0f Missed a Dose of your GLP-1? Watch Out for These Symptoms! \ud83d\udea8\" width=\"563\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/oGblLKUsIfA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-severe-dehydration\">Severe Dehydration<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Severe dehydration is not a direct side effect of GLP-1 weight loss medication. But vomiting, nausea, diarrhoea and constipation may result in dehydration. That\u2019s why it\u2019s so important to drink enough water when you\u2019re using weight loss jabs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Drinking alcohol alongside Mounjaro can also make these common side effects worse. Alcohol also causes the body to get rid of excess fluid and salt, making dehydration more likely. It\u2019s one of the reasons why we recommend you avoid <a href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/weight-loss\/mounjaro\/can-you-drink-alcohol-on-mounjaro\/\">alcohol when taking Mounjaro<\/a>. Women using Wegovy shouldn&#8217;t drink more than one glass a day, while men should stick to two.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If dehydration is severe it may lead to other serious health complications such as kidney damage, which can result in hospitalisation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Go to a GP or call NHS 111 if you have symptoms that indicate severe dehydration. According to the <a href=\"https:\/\/www.nhs.uk\/conditions\/dehydration\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" rel=\"dofollow\" >NHS<\/a>, these include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Feeling unusually tired<\/li>\n\n\n\n<li>Feeling confused and disorientated<\/li>\n\n\n\n<li>Feeling dizzy when you stand up and it does not go away<\/li>\n\n\n\n<li>Dark yellow pee or peeing less than normal<\/li>\n\n\n\n<li>Breathing quickly with a fast heart rate<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-serious-allergic-reactions\">Serious Allergic Reactions<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Severe allergic <a href=\"https:\/\/www.medicines.org.uk\/emc\/files\/pil.13800.pdf\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" rel=\"dofollow\" >reactions to Wegovy<\/a> and Mounjaro, like anaphylaxis, are rare. They affect one in 1,000 patients and usually new users of GLP-1 medication.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You should get immediate medical help and inform your doctor if you experience breathing problems. Or if you get rapid swelling of the lips, tongue and\/or throat with difficulty swallowing and a fast heartbeat.<\/p>\n\n\n\t\t<div data-elementor-type=\"page\" data-elementor-id=\"12903\" class=\"elementor elementor-12903\" data-elementor-post-type=\"elementor_library\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f691d71 e-con-full e-flex e-con e-parent\" data-id=\"f691d71\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fc7aefa cta-heading elementor-widget elementor-widget-heading\" data-id=\"fc7aefa\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Get tailored weight loss advice with our Renu app<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0ab8dcd elementor-widget elementor-widget-button\" data-id=\"0ab8dcd\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/renu.simpleonlinepharmacy.co.uk\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Sign Up Now<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-key-takeaways\">Key Takeaways<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Serious side effects aren\u2019t that common. But it\u2019s still important to know what they are, so you know when to see a doctor. The most severe risks of GLP-1 medications include pancreatitis, severe dehydration and allergic reactions.<\/li>\n\n\n\n<li>Misusing your GLP-1 weight loss injections can increase your risk of severe side effects. So please follow your dosing schedule. Let your healthcare provider know if you want to take a break from your treatment.<\/li>\n\n\n\n<li>Symptoms of pancreatitis include severe abdominal pain (the main symptom) radiating to the back, nausea, bloating, fever, jaundice and fatty stools.<\/li>\n\n\n\n<li>Look out for symptoms of severe dehydration too. See your GP or call NHS 111 if you feel dizzy, unusually tired or are confused and disorientated.<\/li>\n\n\n\n<li>For non-urgent queries, remember we\u2019re always here to support you. If you have any questions or concerns about your GLP-1 weight loss treatment, please don\u2019t hesitate to contact us. Call us on <a href=\"tel:+441417745023\">0141 774 5023<\/a>.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-references\">References<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MHRA (2024). GLP-1 receptor agonists: reminder of the potential side effects and to be aware of the potential for misuse. [online] GOV.UK. Available at: <a href=\"https:\/\/www.gov.uk\/drug-safety-update\/glp-1-receptor-agonists-reminder-of-the-potential-side-effects-and-to-be-aware-of-the-potential-for-misuse\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" rel=\"dofollow\" >https:\/\/www.gov.uk\/drug-safety-update\/glp-1-receptor-agonists-reminder-of-the-potential-side-effects-and-to-be-aware-of-the-potential-for-misuse<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NHS (2022). Dehydration. [online] NHS. Available at: <a href=\"https:\/\/www.nhs.uk\/conditions\/dehydration\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" rel=\"dofollow\" >https:\/\/www.nhs.uk\/conditions\/dehydration\/<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Package leaflet: Information for the patient Wegovy FlexTouch. (n.d.). Available at: <a href=\"https:\/\/www.medicines.org.uk\/emc\/files\/pil.13800.pdf\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" rel=\"dofollow\" >https:\/\/www.medicines.org.uk\/emc\/files\/pil.13800.pdf<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Package leaflet: Information for the patient Mounjaro KwikPen (n.d.). Available at: <a href=\"https:\/\/www.medicines.org.uk\/emc\/files\/pil.15481.pdf\" target=\"_blank\" rel=\"dofollow noreferrer noopener\">https:\/\/www.medicines.org.uk\/emc\/files\/pil.15481.pdf<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-authorship\">Authorship<\/h3>\n\n\n\t\t<div data-elementor-type=\"container\" data-elementor-id=\"14945\" class=\"elementor elementor-14945\" data-elementor-post-type=\"elementor_library\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ec8f702 e-flex e-con-boxed e-con e-parent\" data-id=\"ec8f702\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-73a1dc0 elementor-position-left elementor-vertical-align-middle elementor-widget__width-auto elementor-widget elementor-widget-image-box\" data-id=\"73a1dc0\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/isabel-finch\/\" tabindex=\"-1\"><img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/wp-content\/uploads\/2025\/01\/isabel-finch-headshot.jpg\" class=\"attachment-thumbnail size-thumbnail wp-image-13552\" alt=\"Isabel Finch - Content Manager (headshot)\" srcset=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/wp-content\/uploads\/2025\/01\/isabel-finch-headshot.jpg 150w, https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/wp-content\/uploads\/2025\/01\/isabel-finch-headshot-70x70.jpg 70w, https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/wp-content\/uploads\/2025\/01\/elementor\/thumbs\/isabel-finch-headshot-r0ojxgksdzdbfxiemx48y9z9ca8sqm2kbllzhr286g.jpg 100w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><h4 class=\"elementor-image-box-title\"><a href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/isabel-finch\/\"><h4>Authored by Isabel Finch<\/h4><\/a><\/h4><p class=\"elementor-image-box-description\"><b>Content Manager<\/b>\n<br>Isabel Finch is the Content Manager at Simple Online Pharmacy, joining the team in August 2024. She started her career as a pharmacy journalist in 2018 and has since worked as a content writer and editor for a number of publications and brands. Her goal is to simplify healthcare and make sure advice is as clear and accessible as possible.<\/p><\/div><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n\n\n\n<p class=\"wp-block-paragraph\"><em>Updated 24\/06\/2025<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Side effects of GLP-1 weight loss injections are usually mild. But there are more serious ones. While they&#8217;re uncommon, it&#8217;s important you know what they are and when to seek urgent medical help.<\/p>\n","protected":false},"author":22,"featured_media":13079,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[99,119,114,87,86],"tags":[28],"treatments":[],"class_list":["post-13078","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mounjaro","category-ozempic","category-saxenda","category-wegovy","category-weight-loss","tag-weight-loss-injections"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>How to Spot Serious Side Effects of GLP-1 Weight Loss Jabs | Simple Online Pharmacy<\/title>\n<meta name=\"description\" content=\"Learn about the serious side effects of GLP-1 weight loss pens. This article outlines what they are and the symptoms you should look out for.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/weight-loss\/serious-side-effects-glp-1s\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Spot Serious Side Effects of GLP-1 Weight Loss Jabs\" \/>\n<meta property=\"og:description\" content=\"Find out more about Weight Loss in todays deep dive: How to Spot Serious Side Effects of GLP-1 Weight Loss Jabs\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/weight-loss\/serious-side-effects-glp-1s\/\" \/>\n<meta property=\"og:site_name\" content=\"Simple Online Pharmacy\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SimpleOnlinePharmacy\" \/>\n<meta property=\"article:published_time\" content=\"2024-12-18T12:42:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-12T12:21:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.simpleonlinepharmacy.co.uk\/health-advice\/wp-content\/uploads\/2024\/12\/serious-side-effects-glp-1s.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Isabel Finch\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@simplepharmacyo\" \/>\n<meta name=\"twitter:site\" content=\"@simplepharmacyo\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Isabel Finch\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/weight-loss\\\/serious-side-effects-glp-1s\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/weight-loss\\\/serious-side-effects-glp-1s\\\/\"},\"author\":{\"name\":\"Isabel Finch\",\"@id\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/#\\\/schema\\\/person\\\/96453f425a5325add64390d59719b4ba\"},\"headline\":\"How to Spot Serious Side Effects of GLP-1 Weight Loss Jabs\",\"datePublished\":\"2024-12-18T12:42:37+00:00\",\"dateModified\":\"2026-06-12T12:21:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/weight-loss\\\/serious-side-effects-glp-1s\\\/\"},\"wordCount\":952,\"publisher\":{\"@id\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/weight-loss\\\/serious-side-effects-glp-1s\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/wp-content\\\/uploads\\\/2024\\\/12\\\/serious-side-effects-glp-1s.jpg\",\"keywords\":[\"Weight Loss Injections Articles and Advice\"],\"articleSection\":[\"Mounjaro Advice\",\"Ozempic\",\"Saxenda\",\"Wegovy Advice\",\"Weight Loss\"],\"inLanguage\":\"en-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/weight-loss\\\/serious-side-effects-glp-1s\\\/\",\"url\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/weight-loss\\\/serious-side-effects-glp-1s\\\/\",\"name\":\"How to Spot Serious Side Effects of GLP-1 Weight Loss Jabs | Simple Online Pharmacy\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/weight-loss\\\/serious-side-effects-glp-1s\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/weight-loss\\\/serious-side-effects-glp-1s\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.simpleonlinepharmacy.co.uk\\\/health-advice\\\/wp-content\\\/uploads\\\/2024\\\/12\\\/serious-side-effects-glp-1s.jpg\",\"datePublished\":\"2024-12-18T12:42:37+00:00\",\"dateModified\":\"2026-06-12T12:21:33+00:00\",\"description\":\"Learn about the serious side effects of GLP-1 weight loss pens. 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