Why SemaPen? | Weight loss alternatives to gastric surgery

Why Choose Us?

Trusted for 20+ years

Obesity experts, not pharmacists

No-strings subscription service

Average 15-21% weight loss*

Weight loss is simpler with SemaPen

You can expect to lose around 15-21% of your body weight with SemaPen's non-surgical gastric bypass alternatives.*

Are you living with obesity? Have you tried diet and exercise but didn't get the results you want? Have you considered bariatric surgery but are worried about going ahead?

The SemaPen programme might be right for you.

Designed by doctors in the UK, our programme uses clinically proven alternatives to gastric surgery called 'Mounjaro' and 'Wegovy'. These weight loss injection pens are easy to take at home and are safe to use when prescribed by a doctor.

If you take just one dose per week and follow our tailored advice, you can expect to lose around 15% of your body weight on Wegovy and 21% on Mounjaro.*

How do I get started?

Wegovy and Mounjaro are available in the UK on prescription.

We've made it simple. Take our online consultation and you'll find out instantly whether you're eligible.

Start consultation

One subscription worth keeping

No strings. No hidden costs.** Just expert support to help you win.

You'll always know your next steps with SemaPen. Join our subscription programme and we'll be by your side for each success and every challenge.

How it works is simple. When you sign up, you'll receive your first pen and a Withings® body scale (worth £60) within a few days.

The scale isn't just a perk. Every time you weigh yourself, it uploads useful data to the cloud so our team can track your progress in real time. They'll reach out with helpful support if necessary.

Need some advice or want to check in? You can contact your support team 24/7 using the SemaPen app.

After a few weeks, we'll automatically send your next pen. This means you never have to remember to place an order or work out dosages for yourself.

We hope our support will give you the boost you need to achieve your goals. But if you want to cancel at any time, go ahead – no strings attached.**

What's included

Medication subscription

Never miss a dose with SemaPen. We'll send you the right injection pen when you need it.

Expert support

Pharmacies often leave you to figure things out on your own. SemaPen gives you tailored, ongoing advice from real obesity experts.

Smart weight tracking

Subscribe and get a £60 Withings® smart scale that shares your progress with our team in real time.

The SemaPen app

Enjoy easy-to-follow diet plans, expert lifestyle advice and a direct line to our support team.

Perks for winning

We celebrate your success like you do. That's why we offer subscribers exclusive rewards for hitting goals.

Money-back guarantee

Cancel at any time** – and get a refund if you don't lose at least 5% of your starting weight.***

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See how SemaPen compares

SemaPen subscribers enjoy a tailored programme designed by one of the UK's most trusted obesity clinics. Online pharmacies don't come close.

	SemaPen	Leading competitor
Type of business	Obesity clinic – part of the renowned Phoenix Health Group	Online pharmacy
Support staff	Trained weight management clinicians, including doctors, dieticians, psychologists and specialised nurses	Pharmacists supported by GPs.
Years of experience	20+ years	3+ years
Care pathways available	Gastric surgery alternatives, plus psychological care, dietary advice and surgical treatments	Gastric surgery alternatives only
Subscription service	Yes – new weight loss pens are sent automatically	No – customers must order new pens
Advice and support	Throughout treatment	Initial consultation only
Direct support line	To obesity experts	To pharmacists and support staff only
Digital scale	Yes – with smart weight tracking and real-time support to keep you on track	No
Weight loss app	Yes	No
Weight loss rewards	Yes	No
Money-back guarantee	Yes	No
Cancel anytime	Yes	No subscription offered

Trusted for 20+ years

SemaPen is part of Phoenix Health, the only private bariatric provider trusted to provide NHS treatment.

You'll find lots of online pharmacies offering non-surgical gastric sleeve alternatives like Wegovy and Mounjaro.

However, most pharmacies can only provide limited care. They're not doctors and they're not set up to deliver targeted, specialised advice about obesity.

That's where SemaPen is different. As part of Phoenix Health, we've helped people triumph in their weight loss journeys for more than 20 years.

With SemaPen, you're not dealing with pharmacists or GPs. You're getting expert care from real weight loss specialists, including doctors, dieticians, psychologists and specialised nurses.

What if I'm not sure what I need?

That's another good reason to choose SemaPen. With our years of experience and UK-wide network of clinics, we're free to deliver the treatment that suits you best.

That might be a gastric surgery alternative like Wegovy or Mounjaro, expert psychological support or a weight loss operation performed by one of the UK's top bariatric surgeons.

To get started, take our free online consultation. You'll hear back instantly with tailored treatment options from our weight loss specialists.

Start consultation