Weight Loss Injections Delivered to Your Door: What Happens Before, During and After

Picture the moment you start looking into this

You've probably read something (a news article, a friend's experience, a social media post) and now you're wondering whether weight loss injections delivered to your door are a realistic option for you, or too good to be true. The honest answer is: it's real, it's regulated, and it takes a bit more than clicking 'add to basket'. That's not a problem. It's the thing that makes it safe.

Mounjaro and Wegovy work by mimicking gut hormones that regulate appetite and, in Mounjaro's case, blood sugar as well. They slow gastric emptying and reduce hunger signals, which is why clinical trials have reported significant average weight reductions, around 20–21% of body weight over 72 weeks with the highest tirzepatide dose in the SURMOUNT-1 trial, published in the New England Journal of Medicine. Those figures come from structured trials; your own outcome depends on your starting point, your adherence and the lifestyle changes you make alongside treatment.

If you want a clear picture of what these medicines do inside the body, the page on what weight loss injections do to your body goes through the mechanism in plain terms. It's worth a read before you decide anything.

The clinical step that has to come before dispatch

A pen cannot be posted without a prescription, and a prescription cannot be issued without a clinical assessment. That sequence is fixed by UK law. What varies between providers is how that assessment works in practice, and whether it's being done properly.

At nume, every consultation is read by a GPhC-registered Independent Prescriber, a real clinician reviewing your answers personally the same day. Identity is verified with photo ID, and weight is confirmed on a live video call. That's not bureaucracy for its own sake; it's the thing that catches contraindications (active pancreatitis, a history of medullary thyroid carcinoma, certain digestive conditions, pregnancy, or medicines that interact) before a pen is dispatched. The NHS medicines page for tirzepatide lists the main contraindications clearly if you want to check before your consultation.

A quick habit worth building: before choosing any online pharmacy, spend under a minute searching its registration number on the GPhC pharmacy register. If it's not there, walk away. nume is registered; you can verify our number, 9012878, in seconds. For more on what a legitimate buying process looks like, the guide to buying weight loss injections covers the red flags in detail.

Eligible patients are adults with a BMI of 30 or above, or 27 or above alongside a weight-related condition such as hypertension, type 2 diabetes or obstructive sleep apnoea. Lower thresholds apply for some ethnic backgrounds under UK guidance. BMI alone doesn't decide; the prescriber looks at the whole picture. Our weight loss injections overview has a fuller breakdown of eligibility criteria.

What arrives, and how to handle it safely

Your pen arrives the next working day via DPD, tracked to the hour, in plain packaging. Inside: the KwikPen (for Mounjaro) or Wegovy pen, the Patient Information Leaflet, and any accessories ordered. The pen goes straight into the fridge, between 2°C and 8°C, a standard fridge door shelf is fine. Read the leaflet for the exact storage window if you need to take it out of the fridge temporarily; that detail varies by product and the leaflet is the definitive source.

Injection technique matters more than most people expect. Clean the site with an alcohol swab, rotate between abdomen, thigh and upper arm to avoid tissue changes at a single spot, and use a fresh needle each time. Alcohol swabs are available from our pharmacy if you need them. Used needles and pens are clinical waste; a sharps container keeps disposal safe and legal.

Side effects, particularly nausea, loose stools and fatigue, are most noticeable in the first few weeks and after dose increases. They usually ease. Seek urgent medical attention for severe, persistent stomach pain that radiates to the back, the MHRA's Drug Safety Update programme highlighted acute pancreatitis as a serious, though infrequent, risk with GLP-1 medicines in January 2026. If side effects feel unmanageable, contact our aftercare team before adjusting anything yourself; our support line is open seven days a week.

When delivery to your door is not the right route

There are situations where starting or continuing these medicines at home without specialist oversight would be the wrong call, and it's better to know them now than after your first pen arrives.

These medicines are not recommended during pregnancy, while breastfeeding, or if you are actively trying to conceive. If any of those apply, have that conversation with your GP before going further. The same applies if you're preparing for surgery, your anaesthetist needs to know you're on a GLP-1 medicine, and the timing of your last dose matters. For questions about how to have that conversation with your GP, the page on talking to your doctor about weight loss injections gives practical framing.

If you have a history of liver disease, it's sensible to read about how weight loss injections affect the liver before starting. For most people the picture is reassuring, but the detail matters and a prescriber should know your history.

And if you're wondering which medicine might suit you better (or what the strongest licensed option actually is) this comparison of injection strengths sets out the evidence side by side. Suitability is ultimately a clinical decision, and our prescribers work through that with you. If you're ready to start, speak to our prescribers through a free consultation today.