All three treatments are highly effective prescription weight loss medications that work by helping to reduce appetite and increase feelings of fullness. The main differences are how they are taken and the weight loss results seen in clinical studies.

TreatmentHow It's TakenActive IngredientAverage Weight Loss*
Wegovy® PillOnce-daily tabletSemaglutideUp to 14%
Wegovy® InjectionOnce-weekly injectionSemaglutideUp to 15%
Mounjaro®Once-weekly injectionTirzepatideUp to 21%

* Based on clinical trial data when combined with diet and lifestyle changes. Individual results can vary.

Which treatment is right for me?

Wegovy® Pill may be suitable for people who prefer a tablet rather than injections.

Wegovy® Injection contains the same active ingredient as Wegovy® Pill but is administered once weekly, making it a convenient option for many patients.

Mounjaro® works slightly differently and has demonstrated the greatest average weight loss in clinical studies, making it a popular choice for patients seeking the strongest weight loss results currently available.

Our clinicians will assess your medical history, treatment preferences, and weight loss goals to help determine the most appropriate option for you.

With the approval of Wegovy® Pill in the UK, many patients currently using injectable weight loss treatments are asking whether switching to a daily tablet may be right for them.

At 123Meds, our clinicians can assess whether Wegovy® Pill is appropriate for your individual circumstances and guide you through the switching process safely.

Can I Switch from Wegovy® Injection to Wegovy® Pill?

Yes. Patients currently using Wegovy® Injection may be able to switch to Wegovy® Pill following a clinical review.

Because both treatments contain semaglutide, switching involves changing how the medication is taken rather than changing to a completely different treatment.

In most cases, patients will stop their injections and begin Wegovy® Pill approximately one week later, although your clinician will confirm the most appropriate timing.

Indicative Wegovy® Switching Guide

Current Wegovy® Injection DoseWegovy® Pill Dose That May Be Considered
0.25mg weekly1.5mg daily
0.5mg weekly4mg daily
1mg weekly9mg daily
1.7mg weekly25mg daily
2.4mg weekly25mg daily
7.2mg Weekly25mg daily

*This table is intended as a guide only. The most appropriate starting dose will depend on your treatment history, response to treatment, side effects, and clinical assessment.

How Does the Switch Work?

Patients will typically stop Wegovy® Injection and begin Wegovy® Pill approximately one week after their final injection, although the exact timing will depend on your individual circumstances.

Our clinicians will advise you when to stop your current treatment and when to begin taking Wegovy® Pill.

Things to Consider Before Switching

Although both treatments contain semaglutide, Wegovy® Pill must be taken differently to ensure it is absorbed correctly.

The tablet should be taken first thing in the morning on an empty stomach with a small amount of plain water. You should then wait at least 30 minutes before eating, drinking or taking any other oral medication.

For some patients, a weekly injection may remain the most convenient option, while others may prefer the flexibility of a once-daily tablet.

Ready to Switch?

If you're currently using Wegovy® Injection and would like to explore switching to Wegovy® Pill, simply click "Start Assessment."

Our clinicians will review your current treatment, confirm whether switching is clinically appropriate, and recommend the most suitable Wegovy® Pill starting dose if treatment is approved.

If you're currently using Mounjaro® and are considering switching to Wegovy® Pill, our clinicians can assess whether changing treatment is appropriate for you.

Unlike Wegovy®, which contains semaglutide, Mounjaro® contains tirzepatide. Although both medicines are highly effective prescription weight loss treatments that help reduce appetite and increase feelings of fullness, they work differently within the body. For this reason, there is no direct dose equivalence when switching between the two treatments.

Many patients consider switching because they:

Prefer taking a once-daily tablet rather than a weekly injection.
Want to avoid needles or injection devices.
Travel frequently and would prefer a treatment that does not require refrigeration.
Are looking for a more convenient treatment that fits around their lifestyle.
Wish to explore an alternative treatment following side effects or personal preference.

Can I Switch?

In many cases, yes. Patients currently using Mounjaro® may be able to switch to Wegovy® Pill following a clinical assessment.

Every patient is different, and our clinicians will review your current treatment, weight loss progress, medical history, treatment goals and any side effects before recommending whether Wegovy® Pill is appropriate for you.

What Dose Will I Start On?

Because Mounjaro® and Wegovy® Pill contain different active ingredients, there is no fixed dose conversion between the two medicines.

When reviewing your assessment, our clinicians will consider:

Your current Mounjaro® dose.
How long you've been receiving treatment.
Your response to treatment and weight loss achieved.
Any side effects you've experienced.
Your medical history and any other medicines you take.

Depending on your individual circumstances, you may not need to restart treatment at the lowest Wegovy® Pill dose. Patients who have been established on Mounjaro® and are tolerating treatment well may be suitable to begin Wegovy® Pill at a higher dose where clinically appropriate.

Your clinician will recommend the most appropriate Wegovy® Pill starting dose and advise when to stop Mounjaro® and begin your new treatment.

Things to Consider Before Switching

Clinical studies have shown that Mounjaro® has demonstrated greater average weight loss than semaglutide-based treatments, with average weight loss of up to 21% when combined with diet and lifestyle changes. Wegovy® Pill has demonstrated average weight loss of approximately 14–17% in clinical studies.

However, the treatment associated with the greatest average weight loss is not always the most appropriate choice. Convenience, tolerability, side effects, lifestyle, personal preference and long-term treatment adherence are all important factors when selecting the right medication.

Wegovy® Pill may be particularly suitable for patients who value the convenience of a once-daily tablet or would prefer not to continue with weekly injections.

Our Clinicians' View

For many patients, remaining on Mounjaro® may continue to be the most appropriate option, particularly if they are achieving good weight loss, tolerating treatment well and are comfortable using a weekly injection.

However, if you would prefer a daily tablet, want to avoid injections, or feel Wegovy® Pill would better suit your lifestyle, switching may be appropriate following a clinical assessment.

Our clinicians will carefully review your treatment history and discuss the potential benefits and considerations before recommending the option that best meets your individual needs.

Ready to Switch?

If you're currently using Mounjaro® and would like to explore whether Wegovy® Pill is right for you, simply click "Start Assessment."

We'll review your current treatment, determine whether switching is clinically appropriate, and if suitable, recommend the most appropriate Wegovy® Pill starting dose and switching plan based on your individual circumstances.

Wegovy® Pill contains semaglutide, a GLP-1 receptor agonist developed by Novo Nordisk. It is the tablet version of Wegovy®, providing an alternative to weekly injections for adults living with overweight or obesity.

Semaglutide works by mimicking glucagon-like peptide-1 (GLP-1), a naturally occurring hormone involved in appetite regulation. By acting on areas of the brain that control hunger and satiety, Wegovy® Pill can help reduce appetite, increase feelings of fullness, and support lower calorie intake.

Clinical studies from the OASIS programme demonstrated significant weight loss when oral semaglutide was used alongside dietary and lifestyle changes. In the OASIS 4 trial, participants achieved average weight loss of approximately 14% regardless of treatment continuation, and around 17% among those who remained on treatment throughout the study.

Wegovy® Pill works by mimicking the effects of the naturally occurring GLP-1 hormone released after eating.

This may help to:

reduce hunger throughout the day
increase feelings of fullness after meals
reduce food cravings
support portion control
promote sustainable weight loss

For best results, treatment should be used alongside healthy eating habits, increased physical activity, and long-term lifestyle changes.

Wegovy® Pill is licensed for adults who:

  • have obesity (BMI of 30 kg/m² or above), or
  • are overweight (BMI of 27 kg/m² or above) and have at least one weight-related health condition such as high
  • blood pressure, high cholesterol, obstructive sleep apnoea, cardiovascular disease, or pre-diabetes.


Our clinicians will assess:

your BMI
weight-related health conditions
medical history
current medications
previous weight loss treatments

Wegovy® Pill should only be used under the supervision of a qualified healthcare professional.

Common side effects may include:

Nausea
Vomiting
Diarrhoea
Constipation
Abdominal discomfort

These side effects are generally similar to those seen with injectable semaglutide treatments and are often most noticeable when treatment is first started or the dose is increased. In many cases, symptoms improve as your body adjusts to treatment.

It is important to stay well hydrated, particularly if you experience vomiting or diarrhoea, as dehydration can increase the risk of complications.

You should contact your GP, pharmacist, or NHS 111 if side effects are severe, persistent, or causing concern. Seek urgent medical attention if you experience severe or persistent abdominal pain, signs of dehydration, symptoms of an allergic reaction such as swelling of the face, lips, tongue or throat, difficulty breathing, or any other serious or unexpected symptoms.

Always read the patient information leaflet supplied with your medication for full information on side effects, warnings, precautions, and ingredients, and follow the instructions provided by your prescriber.

Wegovy® Pill should be taken exactly as prescribed by your clinician.

To ensure the medicine is absorbed properly:

Take one tablet once daily.
Take the tablet immediately after waking up.
Swallow the tablet whole with a small amount of plain water (up to 120ml).
Do not split, crush, or chew the tablet.
Do not eat, drink, or take any other oral medicines for at least 30 minutes after taking your dose.

Following these instructions is important because food, drinks, and other medicines can reduce how much semaglutide your body absorbs.

  • How does Wegovy® Pill compare to Wegovy® injections?

    Wegovy® Pill and Wegovy® injections both contain semaglutide and work by helping to reduce appetite and increase feelings of fullness. The key difference is how they are taken. Wegovy® Pill is taken once daily, while Wegovy® injection is taken once weekly.

    In clinical studies, oral semaglutide 25mg achieved around 14% average weight loss over 64 weeks, or around 17% in people who stayed on treatment. Wegovy® injection achieved around 15% average weight loss over 68 weeks in the STEP 1 trial. Individual results vary.

  • How does Wegovy® Pill compare to Mounjaro®?

    Wegovy® Pill contains semaglutide, while Mounjaro® contains tirzepatide. Semaglutide works on the GLP-1 receptor, while tirzepatide works on both GIP and GLP-1 receptors.

    In the SURMOUNT-1 trial, tirzepatide led to average weight loss of up to around 21% over 72 weeks at the highest dose. By comparison, oral semaglutide 25mg achieved around 14% to 17% average weight loss over 64 weeks in OASIS 4. This does not mean Mounjaro® is automatically the best option for everyone. Suitability depends on your medical history, treatment preferences, side effects, and clinician assessment.

  • Is Wegovy® Pill better than weight loss tablets such as Orlistat?

    Wegovy® Pill and Orlistat work in very different ways. Wegovy® Pill works on appetite and fullness, while Orlistat reduces the amount of dietary fat absorbed from food.

    Clinical trial results suggest GLP-1 treatments usually lead to greater average weight loss than Orlistat. In the XENDOS study, Orlistat was associated with average weight loss of 5.8kg after 4 years, compared with 3.0kg with placebo. Wegovy® Pill achieved around 14% to 17% average weight loss over 64 weeks in OASIS 4.

  • How does Wegovy® Pill compare to Mysimba®?

    Wegovy® Pill contains semaglutide and works by regulating appetite through the GLP-1 pathway. Mysimba® contains naltrexone and bupropion and works on areas of the brain involved in appetite and cravings.

    In clinical studies, naltrexone/bupropion was associated with around 5% to 9% average weight loss over 56 weeks, while Wegovy® Pill achieved around 14% to 17% average weight loss over 64 weeks. The most suitable option depends on medical history, contraindications, side effects, and treatment goals.

  • What are the common side effects of Wegovy® Pill?

    The most common side effects are usually digestive symptoms such as nausea, vomiting, diarrhoea, constipation, stomach discomfort, indigestion, bloating, and reduced appetite. These are often more noticeable when starting treatment or increasing the dose and may improve as your body adjusts.

  • Which is better: Wegovy® Pill, Wegovy® injection, or Mounjaro®?

    There is no single best treatment for everyone. Mounjaro® has shown higher average weight loss in clinical trials, Wegovy® injection has strong long-term evidence, and Wegovy® Pill offers a non-injectable option for patients who prefer tablets. The right choice depends on safety, suitability, tolerance, lifestyle, and personal preference.

  • What is Wegovy® Pill?

    Wegovy® Pill is a prescription weight loss treatment containing semaglutide, the same active ingredient used in Wegovy® injections. It belongs to a group of medicines known as GLP-1 receptor agonists and is designed to support weight loss by helping to reduce appetite and increase feelings of fullness.

  • How does Wegovy® Pill work?

    Wegovy® Pill works by mimicking a naturally occurring hormone called GLP-1, which helps regulate appetite and food intake. It can help reduce hunger, increase feelings of fullness, and make it easier to consume fewer calories as part of a weight management plan.

  • Who can use Wegovy® Pill?

    Wegovy® Pill may be suitable for adults living with obesity, or those who are overweight with weight-related health conditions. Our clinicians will review your BMI, medical history, current medications, and treatment goals before determining whether treatment is appropriate.

  • Is Wegovy® Pill available in the UK?

    Yes. Wegovy® Pill has been approved by the Medicines and Healthcare products Regulatory Agency (MHRA) for weight management in eligible adults.

  • How often do I take Wegovy® Pill?

    Wegovy® Pill is taken once daily. Unlike Wegovy® injections, which are administered once weekly, the tablet should be taken every day as directed by your prescriber.

  • How should I take Wegovy® Pill?

    Wegovy® Pill should be taken first thing in the morning on an empty stomach with a small amount of plain water. You should wait at least 30 minutes before eating, drinking, or taking any other oral medicines. Following these instructions is important to ensure the medication is absorbed properly.

  • How much weight can I lose with Wegovy® Pill?

    Weight loss results vary from person to person. Clinical studies have shown average weight loss of approximately 14–17% of starting body weight when oral semaglutide is used alongside a reduced-calorie diet and increased physical activity. Individual results will depend on factors such as adherence to treatment, diet, exercise, and starting weight.

  • How long does it take for Wegovy® Pill to work?

    Many people notice reduced appetite and increased feelings of fullness within the first few weeks of treatment. Meaningful weight loss usually develops gradually over several months as treatment continues and doses are increased.

  • What are the most common side effects of Wegovy® Pill?

    The most commonly reported side effects are digestive in nature and may include nausea, diarrhoea, vomiting, constipation, stomach pain, bloating, indigestion, fatigue, dizziness, and headache. These side effects are often most noticeable when starting treatment or increasing the dose.

  • Does Wegovy® Pill cause nausea?

    Nausea is one of the most common side effects associated with semaglutide treatment. Symptoms are often mild to moderate and may improve as your body adjusts to the medication. Eating smaller meals and avoiding high-fat foods may help reduce symptoms.

  • Can I switch from Wegovy® injections to Wegovy® Pill?

    Some patients may be able to switch between Wegovy® injections and Wegovy® Pill. Any switch should be reviewed by a healthcare professional to ensure treatment remains safe and appropriate.

  • Does Wegovy® Pill need to be refrigerated?

    No. Unlike injectable GLP-1 treatments, Wegovy® Pill does not require refrigeration and can be stored according to the manufacturer's instructions at room temperature.

  • Can I drink alcohol while taking Wegovy® Pill?

    Alcohol is not specifically prohibited while taking Wegovy® Pill. However, alcohol may worsen side effects such as nausea and can make weight management more difficult. If you are unsure whether alcohol is appropriate for you, speak to your prescriber.

  • Can I take Wegovy® Pill with other medications?

    Possibly. Semaglutide can affect how some medicines are absorbed. It is important to tell your clinician about any prescription medicines, over-the-counter treatments, vitamins, or supplements you are currently taking before starting treatment.

  • Is Wegovy® Pill suitable for people with type 2 diabetes?

    Some people with type 2 diabetes may be suitable for semaglutide-based treatments. Your clinician will assess your medical history, current medications, and individual circumstances before determining whether Wegovy® Pill is appropriate.

  • What should I do if I miss a dose?

    If you miss a dose, follow the advice provided in the patient information leaflet or by your prescriber. Do not take an extra tablet to make up for a missed dose. If you are unsure what to do, speak to your pharmacist or healthcare professional.

  • Are there any serious side effects I should be aware of?

    Serious side effects are uncommon but can occur. You should seek urgent medical attention if you experience severe or persistent abdominal pain, signs of an allergic reaction, difficulty breathing, swelling of the face or throat, or any other severe or unexpected symptoms. Contact NHS 111, your GP, or emergency services as appropriate.

  • Can Wegovy® Pill be used long term?

    Weight management is often a long-term process. Your clinician will regularly review your progress and discuss whether ongoing treatment remains appropriate based on your individual circumstances and treatment goals.

  • Is Wegovy® Pill a substitute for diet and exercise?

    No. Wegovy® Pill works best when used alongside a reduced-calorie diet, increased physical activity, and healthy lifestyle changes. Treatment is intended to support these changes rather than replace them.

  • How can I buy Wegovy® Pill safely online?

    Wegovy® Pill should only be obtained from a registered UK pharmacy following a clinical assessment by a qualified prescriber. Avoid purchasing weight loss medication from social media, online marketplaces, or websites that do not require a prescription, as counterfeit medicines can pose serious health risks.

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