- Average 15-21% weight loss*
- Tailored programmes built by real experts
- Targeted support to make success feel simpler
- Unique app with weight loss tools and lessons
Your journey starts in the app
Unlock tailored support, weight tracking and more.
1
Download the free app
2
Take your digital consultation
3
Start your programme
'I used Semapen for Mounjaro weight loss and I couldn't recommend them enough. I would recommend them to family and friends. They are so professional and helpful.'
Trustpilot review
'Amazing product and service. Nothing was ever too much trouble. Literally changed my life for the better.'
Trustpilot review
'I've gone with Semapen because I don't just want a drug distributor but real support with people who know about the issues for weight management.'
Trustpilot review
It's our expertise that makes the difference
Have you tried injectable weight loss medications but felt let down by a lack of support?
Are you looking for a genuine weight loss community, not just an online pharmacy?
That's where SemaPen is different. Founded by renowned obesity surgeon Professor David Kerrigan, we provide tailored, expert support to help you achieve your weight loss goals.
With our support on your side, you'll have the tools you need to
take control and
lose weight for good.
What SemaPen IS
- A weight loss clinic founded by UK experts
- Specialists who understand your challenges and provide tailored solutions
- A tight-knit community that really cares about your goals and overall health
- An app with tools to help you track progress and learn healthy habits
- A healthy way to lose weight and keep enjoying the food you love
What SemaPen ISN'T
- Just another online pharmacy
- A drug supplier that provides no ongoing support
- A website focused on selling prescriptions
- No app or extras
- A fad diet or strict calorie-counting
I've used an online pharmacy and was disappointed with the results
Many online pharmacies are happy to sell you a prescription but won't offer ongoing support. With SemaPen, you join a guided programme with step-by-step support to achieve lasting weight loss.
I've tried weight loss injections, but the side effects were too much
Our experts will check in regularly to make sure you stay happy and healthy. Experiencing unpleasant side effects? It's easy to change your dose through the SemaPen app.
I've used an online pharmacy and was disappointed with the resultsI need support and encouragement – willpower isn't enough
Choosing SemaPen means joining a tight-knit weight loss community. You can access tailored support through WhatsApp or the SemaPen app, and connect with peers through our forum
I'm sick of losing weight only to gain it all again
We give you the tools you need to achieve a healthy weight – and maintain it, too. With the unique SemaPen Academy, you'll learn lifelong habits that promote lasting health and well-being.
Get started with the SemaPen app
It's easy to get started with SemaPen. Simply download the FREE app and take our simple digital consultation.
It's our expertise that makes the difference
| Feature* | SemaPen | Online Pharmacy |
|---|---|---|
| Wegovy/Mounjaro pens | ✔️ Sent monthly | ✔️ Must order new pens manually |
| Sharps bin for safe needle disposal | ✔️ Included | ✔️ Included |
| Initial online consultation | ✔️ Included | ✔️ Included |
| Welcome video consultation | ✔️ Included | ❌ Not included |
| Dedicated patient support team | ✔️ Real UK weight loss experts | ❌ Pharmacists and GPs only |
| Exclusive SemaPen Academy lessons | ✔️ Included | ❌ Not included |
| Health dashboard to track progress | ✔️ Included | ❌ Not included |
| Calorie/nutrition tracker | ✔️ Included | ❌ Not included |
| Weight monitoring and advice from clinical team | ✔️ Included | ❌ Not included |
| Clinical support by email | ✔️ Included | ❌ Not included |
| Withings smart scale (tracks weight and BMI via the app) | ✔️ Included | ❌ Not included |
| Personalised 10-month online fitness programme | ✔️ Included | ❌ Not included |
| Dedicated weight loss forum | ✔️ Included | ❌ Not included |
| Tailored monthly vitamins for weight loss | ✔️ Included | ❌ Not included |
| Home blood test for common health problems | ✔️ Available | ❌ Not available |
| Video consultations with qualified dietitians | ✔️ Available | ❌ Not available |
| Video consultations with clinical psychologists | ✔️ Available | ❌ Not available |
| Full home health assessment | ✔️ Available | ❌ Not available |
*Depending on package
Our programmes
Wegovy programme
The original, game-changing weight loss medication
- 15% average weight loss*
- Taken weekly as an injection
- Cost-effective and clinically proven
- Wraparound support programme
FROM £189/month
Mounjaro programme
The latest and most effective weight loss injection
- 21% average weight loss*
- Taken weekly as an injection
- Clinically proven to work for 95% of patients
- Wraparound support programme
FROM £225/month
SemaHealth programme
Tailored, drug-free weight loss support
- 10–15% average weight loss‡
- Swap meals for tasty, nutritious shakes and soups
- Designed by qualified UK dietitians
- Drug-free option with wraparound support
FROM £89.41/month
How it works
1. Download the SemaPen app
The SemaPen app gives you instant access to our experts and a host of helpful tools. Download it today to get started.
2. Digital consultation
Take our simple digital consultation and find out instantly if you're eligible for our programmes.
3. Tailored treatments
Our experts review your responses and recommend the best treatment programmes for you.
4. Discreet delivery
Your first weight loss pen arrives directly at your door in discreet packaging.
The SemaPen app
Your daily weight loss companion
Only SemaPen provides a full-featured app with expert support, weight tracking and diet planning built in. It's all about giving you the tools you need to achieve long-term weight loss.
- Weight and health tracking from one simple dashboard
- Access to real UK weight loss experts, right there in the app
- Exclusive SemaPen Academy content to learn healthy lifelong habits
- Personalised online fitness plan delivered by Sword Health
- Nutrition tracker for meal planning – with a built-in barcode scanner†
- Weight loss forum, where you can connect with the SemaPen community†
- Fun quests and challenges to stay motivated and on track
It's different with SemaPen
Weight loss feels simpler with our support
20+ years experience
Get expert, tailored support from real dieticians and obesity doctors – not just pharmacists or GPs.
Advice when you need it
Reach out to our experts whenever you need support. Use WhatsApp, email or the SemaPen app.
Cancel anytime
Our simple subscription gets you the right dose when you need it. But you can cancel at any time.§
Money-back guarantee
Total peace of mind. If you don't lose at least 5% of your starting weight, we'll give you a refund.||
Your journey starts here
What to expect on weight loss medication
15-21% average weight loss*
Suppresses appetite
Makes you feel full for longer
A typical weight loss journey on Mounjaro*
Months 0-3
You'll start to feel fuller and have fewer cravings. You could lose up to 10% of your body weight.
Months 3-6
This is where you really start to feel the benefits. Expect more energy, better sleep and up to 15% weight loss.
Months 6+
You could have lost
around 21%
of your body weight. Your blood sugar, blood pressure and cholesterol should also improve.
Clinically proven weight loss medication
Supported by obesity experts
And remember: if you don't succeed, you get your money back
That's right. We're so confident in our success rate that we'll give you your money back if our weight loss programmes don't work for you.||
Your questions answered
Why do I need an online consultation?
Weight loss injections are prescription medications. This means you need to have a consultation with a medical practitioner before you can get a prescription and begin treatment.
Our digital consultation is designed by doctors in the UK and lets you know instantly if you're eligible for treatment. We'll ask questions about your medical history, lifestyle, weight and other relevant topics. This is to make sure it's safe and appropriate for you to take the medication.
What does the SemaPen programme involve?
SemaPen's weight loss medication programme is designed by some of the UK's most trusted weight loss experts. This means you can expect truly tailored support founded on 20+ years of obesity treatment experience. You can also find diet and lifestyle advice in the exclusive SemaPen app.
Our service works as a simple subscription. This means each dose will arrive automatically. We handle the medical side of things so you can focus on your weight loss goals.
Who can join the SemaPen programme?
Weight loss injections are licensed in the UK for the treatment of obesity. If a person is obese, it means they have a BMI of 30 or greater.
However, having a high BMI doesn't automatically make you eligible. In your digital consultation, we'll look at your medical history and make a decision on a case-by-case basis.
In some cases, people can join the programme with a lower BMI (27). In other cases, the treatment simply wouldn't be suitable.
Do weight loss drugs cause side effects?
Like all medications, weight loss injections can cause side effects. The most common side effects include nausea, vomiting, diarrhoea and stomach pain. However, these are typically mild and often go away as you continue treatment. Serious side effects are rare.
How long does it take to see results?
Many patients start noticing results after two or three months. However, healthy weight loss takes time – even with help from weight loss medications. To lose and sustain a significant amount of weight, we recommend that patients continue taking the treatments for at least 12 months.
