Mounjaro 15mg

Mounjaro 15mg is not required for everyone — many patients achieve success on 7.5mg, 10mg or 12.5mg. But for some, this final dose unlocks further appetite control and fat loss when progress has slowed.

You’ll usually be considered for 15mg if:

You’ve been on 12.5mg for at least 4 weeks

Your side effects are mild and manageable

Weight loss has slowed or plateaued

You and your clinician agree there’s benefit in moving up

Mounjaro 15mg is designed to:

Deliver the maximum GLP-1 & GIP activation available

Support continued weight loss if lower doses are no longer effective

Reduce appetite, cravings, and emotional eating

In simple terms: it’s the strongest version of Mounjaro, used when your body is ready for it — and when lower doses aren’t getting you to your goal.

A Mounjaro 15mg pen costs £229 (4 weeks).

That’s equivalent to £8.18/day.

If you’re new to Medicspot, you’ll save £50 on your first order.

 

Because 15mg is the highest dose, its effects may feel more noticeable (both positive and challenging). You may experience:

Increased appetite suppression
Faster fat loss in some patients
Fewer cravings and less emotional eating
Improved insulin sensitivity (if diabetic or prediabetic)

But also:

Stronger nausea or bloating, especially in the first week
Fatigue or digestive changes
Potential need to adjust portion sizes or meal timing

At this dose, Mounjaro is working at full capacity across multiple systems in the body:

GLP-1 & GIP hormone receptors are fully activated

Appetite signals from the brain are significantly reduced

Gut motility slows — helping you feel full longer

Insulin production improves, reducing blood sugar spikes

Fat burning is prioritised, especially around the belly and liver

Even if weight loss slows down, these internal processes are still working and contributing to long-term metabolic improvements.

“I didn’t lose weight for 3 weeks at 12.5mg, but after one week on 15mg the scale started moving again.”

 

“The nausea was rough at first, but then I felt completely normal, just full on tiny meals.”

 

You might be ready for 15mg if:

You’ve been on 12.5mg for 4+ weeks
Your side effects are mild or well-managed
Your weight loss has slowed or plateaued
You’re still struggling with appetite, portion control or cravings

You might be better to wait (or even step back to 12.5mg) if:

You’re experiencing persistent side effects
You’ve had rapid weight loss and want to stabilise
You’re close to your goal and want to maintain instead of lose

Because 15mg is powerful, there are a few important don’ts:

Don’t increase your dose without clinical approval
Don’t ignore ongoing nausea, bloating or fatigue — check in with your clinician
Don’t assume more is always better — some people do best at lower doses
Don’t skip meals to “boost” your results — this often backfires
Don’t share your pen or use someone else’s medication — even if the dose is the same

Book a free call with our team to discuss any questions you may have about the Mounjaro 15mg dose.

Book a call today