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Your Journey to success ebook

More information about licensed prescription medicines

Mounjaro

Mounjaro

Mounjaro

Mounjaro is a prescription medicine used to support weight management. It is also licensed for type

2 diabetes. It works best when combined with healthy eating, increased activity, and regular

medical follow-up.

■ How Does it Work?

Mounjaro works by mimicking two natural hormones in the body, GLP-1 and GIP. Together they

help to:

• Reduce appet

Mounjaro is a prescription medicine used to support weight management. It is also licensed for type

2 diabetes. It works best when combined with healthy eating, increased activity, and regular

medical follow-up.

■ How Does it Work?

Mounjaro works by mimicking two natural hormones in the body, GLP-1 and GIP. Together they

help to:

• Reduce appetite – you feel full sooner and stay full longer

• Slow down stomach emptying – food stays in your stomach longer

• Improve blood sugar control – especially helpful if you have diabetes or are at risk

■ How Do I Take It?

Mounjaro comes as a once-weekly injection using a pen device. It is injected under the skin

(tummy, thigh, or upper arm). You can take it at any time of day, with or without food.

Week Dose

1–4 2.5 mg once weekly (starting dose)

5–8 5 mg once weekly

9–12 7.5 mg once weekly

13–16 10 mg once weekly

17–20 12.5 mg once weekly

21+ 15 mg once weekly (maximum dose)

■ Tips for Taking Mounjaro

• Inject once a week, on the same day each week

• Rotate injection sites each week

• If you miss a dose, take it within 4 days; if more than 4 days have passed, skip it and continue

as normal

• Store unused pens in the fridge; once in use, pens can be kept at room temperature (up to

30°C) for 21 days

■ Common Side Effects

• Nausea, vomiting, diarrhoea, or constipation

• Reduced appetite

• Tiredness or headache

• Mild redness or swelling at the injection site

Contact your doctor if symptoms are severe, persistent, or if you notice abdominal pain that does

not go away.

■ Monitoring

Your doctor will review your weight, progress, and any side effects regularly. Treatment may be

adjusted depending on how you respond. Progress is usually checked after 16 weeks on the 5 mg

dose or higher.

https://www.medicines.org.uk/emc/files/pil.15481.pdf



Wegovy

Mounjaro

Mounjaro

Wegovy is a prescription medicine used for weight management. It works best when combined with

healthy eating, increased activity, and regular medical follow-up.

■ How Does it Work?

Wegovy mimics a natural hormone in the body called GLP-1. It works in several ways to support

weight loss:

• Reduces appetite – helping you feel full sooner and st

Wegovy is a prescription medicine used for weight management. It works best when combined with

healthy eating, increased activity, and regular medical follow-up.

■ How Does it Work?

Wegovy mimics a natural hormone in the body called GLP-1. It works in several ways to support

weight loss:

• Reduces appetite – helping you feel full sooner and stay full longer

• Slows down stomach emptying – food stays in your stomach longer

• Supports blood sugar control – reducing cravings and stabilising energy levels

■ How Do I Take It?

Wegovy is taken once a week as an injection under the skin (in your tummy, thigh, or upper arm).

You can take it at any time of day, with or without food.

Weeks Dose

1–4 0.25 mg once weekly

5–8 0.5 mg once weekly

9–12 1.0 mg once weekly

13–16 1.7 mg once weekly

17+ 2.4 mg once weekly (maintenance dose)

■ Tips for Taking Wegovy

• Inject once a week, on the same day each week

• Rotate injection sites each week

• If you miss a dose and it is within 5 days, take it as soon as possible. If more than 5 days

have passed, skip it and continue as normal

• Store unused pens in the fridge; once in use, pens can be kept at room temperature (up to

30°C) for 6 weeks

■ Common Side Effects

• Nausea, vomiting, diarrhoea, or constipation

• Headache or tiredness

• Mild redness or swelling at the injection site

Contact your doctor if symptoms are severe, persistent, or if you notice abdominal pain that does

not go away.

■ Monitoring

Your doctor will review your weight, progress, and any side effects regularly. Treatment is usually

reassessed after 16 weeks on the 2.4 mg dose to check effectiveness.


https://www.medicines.org.uk/emc/product/13799/pil

Saxenda

Mounjaro

Saxenda

Saxenda is a prescription medicine used to support weight management. It works best when

combined with healthy eating, increased activity, and regular medical follow-up.

■ How Does it Work?

Saxenda is similar to a natural hormone in the body called GLP-1. It helps to:

• Reduce appetite – you feel full sooner and stay full longer

• Slow down st

Saxenda is a prescription medicine used to support weight management. It works best when

combined with healthy eating, increased activity, and regular medical follow-up.

■ How Does it Work?

Saxenda is similar to a natural hormone in the body called GLP-1. It helps to:

• Reduce appetite – you feel full sooner and stay full longer

• Slow down stomach emptying – food stays in your stomach longer

• Support blood sugar control – helpful if you are at risk of diabetes

■ How Do I Take It?

Saxenda comes as a daily injection using a pen device. It is injected under the skin (tummy, thigh,

or upper arm).

Week Dose

1 0.6 mg once daily

2 1.2 mg once daily

3 1.8 mg once daily

4 2.4 mg once daily

5+ 3.0 mg once daily (usual full dose)

■ Tips for Taking Saxenda

• Take it at the same time each day, with or without food

• Rotate injection sites each day

• Store unused pens in the fridge; once in use, can be kept at room temperature for 30 days

• Never share your pen with anyone else

■ Common Side Effects

• Nausea, vomiting, diarrhoea, or constipation

• Headache or tiredness

• Mild redness or swelling at the injection site

Contact your doctor if symptoms are severe, persistent, or if you notice abdominal pain that does

not go away.

■ Monitoring

You will have regular follow-up with your doctor to review your progress, weight loss, and any side

effects. Treatment is usually reassessed after 16 weeks to check effectiveness.


https://www.medicines.org.uk/emc/files/pil.2313.pdf?utm

Weight Loss Wales publications

Davies, A.L.(2025) ‘Innovative digital weight management: real-world outcomes from Weight Loss Wales

LBP4.086

Innovative Digital Weight Management: Real-World Outcomes

from Weight Loss Wales

Davies, A. L.

Clinical Director, Weight Loss Wales, United Kingdom

Obesity remains a significant public health burden in the UK, with prev-

alence continuing to rise, leading to increased rates of type 2 diabetes,

cardiovascular disease, and reduced quality of life. Despite the growing

availability of pharmacological treatments, adherence to anti-obesity

medications remains a challenge, necessitating smarter, more innovative

approaches to ensure safe and effective weight management.

Weight Loss Wales became the first Healthcare Inspectorate Wales accred-

ited and approved virtual weight management clinic in Wales, utilizing

a fully digital approach to patient consultations. By integrating virtual

assessments with close, ongoing patient engagement via WhatsApp, text

messaging, and email, the service provided continuous support while

optimizing adherence to treatment.

This study presents real-world data from the first 100 patients initiated on

semaglutide or tirzepatide for weight management. Key findings include:

• 96% of patients remained on treatment for at least six months.

• The average weight loss at six months was 19kg, demonstrating signif-

icant efficacy.

• The average dose of tirzepatide used was 7.7mg, highlighting a gradual

patient centric titration approach within a virtual setting.

Davies, A.L. (2025) ‘Innovative digital weight management: real-world outcomes from Weight Loss Wales’, Obesity Facts, 18(Suppl 1), p. LBP4.086. Presented at the 32nd European Congress on Obesity (ECO 2025), Málaga, Spain, 11–14 May. doi:10.1159/000545968.

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Acquisition costs and weight reduction

Evans, M., Evans, W., Godbeer, F., Edgar, L., Spaepen, E. and Davies, A.L. (2025) ‘Analysis of tirzepatide acquisition costs and weight reduction outcomes in the United Kingdom: insights from the SURMOUNT-1 study’, Advances in Therapy, 42(6), pp. 2821–2832. doi:10.1007/s12325-025-03194-8.

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Wang, W., Chen, R., Lloyd Davies, A., Guo, J., Bo Jensen, T., Li, Y., Luo, B., Ye, X., Zhang, K. and Ning, G. (2023)‘IDF2022-0613 PIONEER 11: Efficacy and safety of oral semaglutide versus placebo in predominantly Chinese patients with T2D treated with diet and exercise’, Diabetes Research and Clinical Practice, 197 (Suppl 1), 110316. doi:10.1016/j.diabres.2023.110316.


Knop, F.K., Cariou, B., Christiansen, E., Davies, A.L., Montanya, E., Abildlund, M.T. & Rosenstock, J. (2021) ‘Time spent in glycaemic control after initiating treatment with oral semaglutide vs empagliflozin: an exploratory analysis of the PIONEER 2 trial’. 57th Annual Meeting of the European Association for the Study of Diabetes (EASD 2021), Abstract 480, pp. 249–250.


Davies, A.L., Khunti, K., Capehorn, M., Artime, E., Spaepen, E., Adam, A., Lin, X., Shang, M., Seager, S. and von Arx, L.-b. (2024) ‘The UK Obesity Landscape: Results from the UK Primary Care Cohort of the IMPACT-O Study’, International Journal of Obesity, 48(Suppl 1), P84. doi:10.1038/s41366-023-01431-0.


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Mounjaro v Wegovy

Tirzepatide 10 and 15 mg were associated with statistically significant
greater reductions in weight, BMI and HbA1c versus semaglutide. 

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Mounjaro v Wegovy

The pooled analysis showed greater

weight loss with tirzepatide compared to semaglutide

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Oral medications

Mysimba

Mysimba is a prescription-only oral medication used alongside a reduced-calorie diet and increased

physical activity. It is licensed for adults with BMI ≥30, or BMI ≥27 with a weight-related condition

such as type 2 diabetes, high blood pressure, or dyslipidaemia.

■ How Does it Work?

Mysimba combines two medicines – naltrexone and bupropion – that act on the brain to:

• Reduce appetite and cravings

• Help you feel full with less food

■ How Do I Take It?

Mysimba is taken as tablets by mouth. The dose is increased gradually over 4 weeks.

Week Dose

1 1 tablet in the morning

2 1 in the morning + 1 in the evening

3 2 in the morning + 1 in the evening

4+ 2 in the morning + 2 in the evening (maximum dose)

■ Effectiveness & Review

Treatment should be stopped after 16 weeks if you have not lost at least 5% of your starting weight.

Studies show average weight loss of around 8% after 56 weeks with Mysimba.

■ Common Side Effects

• Nausea, vomiting, constipation

• Headache, dizziness, dry mouth

• Insomnia (trouble sleeping)

■■ Mysimba may cause drowsiness or dizziness. Do not drive or operate machinery until you know

how it affects you.

■ Monitoring

Regular follow-up with your doctor is important to review progress, side effects, and whether

treatment should continue.


https://www.medicines.org.uk/emc/files/pil.2684.pdf

Orlistat

Orlistat is a medicine used to help with weight loss. It works best when combined with a

reduced-calorie diet and regular physical activity. It is suitable for adults with a BMI ≥30, or BMI ≥28

with a weight-related health condition.

■ How Does it Work?

Orlistat works in your digestive system by blocking the absorption of around one-third of the fat from

the food you eat. This undigested fat passes through the gut and out of the body in your stool. By

reducing the calories you absorb from fat, Orlistat helps with weight loss.

■ How Do I Take It?

• The usual dose is 120 mg three times a day.

• Take immediately before, during, or up to 1 hour after a main meal containing fat.

• If a meal is missed or contains no fat, skip the dose.

• Swallow the capsule whole with water.

■ Tips for Taking Orlistat

• Follow a balanced, reduced-calorie diet with about 30% of calories from fat.

• Spread your daily fat intake evenly across three meals.

• Take a daily multivitamin at bedtime (or at least 2 hours after taking Orlistat) to prevent

vitamin deficiencies (A, D, E, K).

■ Common Side Effects

• Oily or fatty stools

• Urgent or increased bowel movements

• Flatulence with oily spotting

• Abdominal discomfort

These side effects are more likely if you eat a high-fat meal.

■ Monitoring

Your doctor will review your progress after 12 weeks. If you have not lost at least 5% of your

starting weight, treatment may be stopped. Regular follow-up ensures safe and effective use.


https://www.medicines.org.uk/emc/files/pil.2592.pdf

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Practical tips

The most common side effects observed in clinical trials were nausea and diarrhoea, these were mild/moderate in severity, and usually of short duration and most frequently reported during the first few months on treatment.

  • Try: Eating smaller portions
  • Try: Eating slowly
  • Try: to stay hydrated 
  • Try: To stop eating at first sign of fullness


  • Avoid: Large portions
  • Avoid: Fried or fatty foods
  • Avoid: Overly sweet or spicy foods
  • Avoid: Drinking alcohol and smoking cigarettes


Read the patient leaflet and information you have been provided and contact us on the number you have been given or via the contact us page. 

Contact us

What to expect after 4th dose of Tirzepatide is given

Following the 4th dose of Tirzepatide there will be a quantity of solution left in the pen device.

Weight loss is difficult but its not your fault

Evidence for diet and exercise

Patients have the autonomy to choose their preferred exercise modality, thereby optimizing treatment outcomes. In addition, this novel systematic review included a dose-response meta-analysis, which showed that aerobic exercise required 140 min per week to improve depressive symptoms

Exercise for depression (pdf)

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A new framework in obesity management (pdf)

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