What is Mounjaro?
Alright, so you’ve stumbled upon Mounjaro. Maybe your friends or family members have been mentioning it, or maybe you’ve been Googling your way through the maze that is the world of weight loss options. Either way, welcome to the ultimate guide to this wonder drug that’s got people talking, and losing kilos.
Don’t worry! We’re not about to give you a boring chemistry lecture filled with medical jargon that won’t benefit any of us. This is your no-nonsense, fun, and friendly guide to Mounjaro, weight loss by week, and what to expect.
Who’s Behind Mounjaro? Meet Eli Lilly
First, we need to give a nod to the brains behind the operation: Eli Lilly and Company. These guys have been in the pharmaceutical game for over a century, formulating life-changing medications from their home base in Indianapolis, USA. They’re like a Michelin-star chef of the pharmaceutical world, except instead of cooking up soufflés, they’ve whipped up Mounjaro.
Originally, Mounjaro was designed to help people with type 2 diabetes, however, as time passed, Mounjaro turned out to have a bit of side hustle going for it, that being the extraordinary ability of helping people lose weight. And let’s just say, it’s smashing it.
When Did Mounjaro First Arrive in the UK?
Mounjaro got approval as a weight loss medication in November 2023, by the Medicines and Healthcare products Regulatory Agency (MHRA). While the medication has already made a big splash across the pond, it’s now officially here to help tackle weight management and obesity for all those who qualify.
How Does Mounjaro Work? Magic or Science?
Ok, so we know we said it wasn’t going to be a lecture and have medical jargon, but bear with us through just this part as it is very important to what makes Mounjaro great.
Here’s where it gets cool. Mounjaro contains tirzepatide, which is a first-of-its-kind medication that targets two hormones in your body that are associated with hunger: GLP-1 (Glucagon-Like Peptide-1) and GIP (Gastric Inhibitory Polypeptide). If you would like to learn more about GLP-1 and GIP hormones, read this article about Mounjaro on Lilly.com
Think of these as the little voices in your head that say “stop eating now” and “I’m already full”. What Mounjaro does is it will amplify these voices, so you will eat less and feel fuller for a longer time. Science? Yes! Magic? Potentially…
But Mounjaro doesn’t just stop there! It also helps your body regulate its blood sugar levels, which has shown to be crucial for weight management. It’s almost like it’s the Swiss Army knife of weight loss medications.

How Do You Take Mounjaro? The Doses, Steps, and Staying on Track
Taking Mounjaro is simple, quick and only once a week injection. Yes, just one! It’s designed to fit in seamlessly into your routine. Mounjaro is a prescription-only medication, in order to get it, you will need a healthcare provider to determine if it’s right for you. It is generally prescribed to patients that have a BMI over 30 (or over 27 with a weight-related condition like diabetes).
When you start on Mounjaro, you’ll begin with the lowest dose, 2.5 mg, to help your body adjust and minimise any potential side effects like nausea. Week-by-week, users often settle into routine and side effects ease. From here, your dosage will gradually increase every 4 weeks, with options going up to 15 mg (increasing dosages by 2.5 mg every 4 weeks). This gradual increase is designed to optimise weight loss while trying to mitigate side effects. Once you’ve achieved your weight-loss goals, you and our healthcare team can decide whether or not you should stay on a maintenance dose to help keep those results steady and long-lasting. It’s all about finding the right balance for your body and your lifestyle!
Let’s Look at Some Data, What Kind of Results Can You Expect?
Brace yourself for some numbers: clinical studies have shown that people taking Mounjaro can lose up to 20% of their body weight over a year. That’s not just a drop in the bucket, that’s life-changing weight loss. For context, someone weighing 100kg could potentially lose 20kg. That’s about the same weight of a healthy grown Border Collie or Siberian Husky… imagine that for a second.
Of course, your results can vary from these results since each of us are unique, but those statistics are still very impressive.
What Are Some Common Mounjaro Side Effects: What Should You Look Out For
As we know, there are no medications that are perfect, and Mounjaro isn’t immune to this either. Here are a few of the common side effects you could experience:
● Nausea: Quite common when first starting the medication. This is why when you start on your medication, you will always start on the lowest dose in order to mitigate this risk.
● Diarrhoea or Constipation: Your digestive system might need time to adjust to your medication. Again, by starting on the lowest dose of Mounjaro, it will allow your body to adjust to the medication and mitigate the risk of these side effects.
● Decreased appetite: This is kind of the point, though, right? Well it is still important to have a dedicated food plan in order to get your body the right nutrition and energy for the day.
● Stomach pain or indigestion: This can happen as your body adjusts to the medication, but by making sure you are eating smaller, but more frequent meals and avoiding greasy foods can help your body ease the discomfort.
Most side effects on Mounjaro are mild and temporary, but you need to always listen to your own body, and if anything feels off, don’t hesitate to chat with us. And if you experience more serious side effects like severe abdominal pain, stop your medication and seek help immediately.

Here Are Envigore’s Top Tips to Get the Most Out of Your Mounjaro Journey
So, when you’ve got the prescription in hand. Now what? Here are some pro tips to maximise your success:
1. Hydrate Like a Pro: Water is your best friend! Especially if you’re experiencing nausea. Keep sipping away!
2. Always Listen to Your Body: Stop eating when you’re full, even if that means that you are leaving food on your plate.
3. Keep It Light: Avoid greasy or food high in fat, they could make side effects worse.
4. Keep Your Body Moving: Pair your Mounjaro pen with some light exercise to improve your results.
5. Plan Your Meals: Smaller, but more frequent meals can be much easier to handle than three big ones.
Final Thoughts: Is Mounjaro Right for You?
Let’s make this point very clear, Mounjaro is not a magic pill (or pen, in this case), but it’s a real game-changer for those ready to take control of their weight.
If you’re considering this medication, you can chat with us directly to see if it’s the right fit for you. And remember, weight loss is a journey, not a sprint. Stay consistent, stay positive, and don’t forget to celebrate all your milestones, be that big or small. This is the best way to achieve a sustainable and long-lasting wellness.
Have Questions? Let’s Chat!
Still unsure if Mounjaro is your next step? Envigore is here to help you! Fill out our contact form, and our friendly team will guide you through your weight loss options, including what to expect, Mounjaro weight loss by week, and alternative options. Let’s make your goals a reality… one step (and one pen) at a time.