The Wegovy oral tablet gives people a once-daily pill version of semaglutide, the same active ingredient found in the weekly Wegovy injection. For anyone already using a weight loss injection, they may be wondering: can you switch from injections to tablets, and if so, how is it done safely?
This guide explains how switching works, what happens if you are moving from Mounjaro, what to expect in the first few weeks, and how the two formats compare in day-to-day use. For a broader overview of the tablets themselves, including how they work and their dosing schedule, see our complete guide to the Wegovy tablets. Switching between any weight loss treatments should always be done with your prescriber and never on your own, so treat this guide as background information rather than a replacement for medical advice specific to your circumstances.
How to Switch Between Wegovy Injection and Tablets
As the injection and the tablets contain the same active ingredient, moving between them is more straightforward than switching to a different drug. You take your final injection as normal, then start taking the tablets on the day your next injection would have been. For example, if you were taking your injection on Monday, you would start taking the tablets on the following Monday (the day you would have injected next). If you are switching from Wegovy tablets to injection instead, you start taking the injection the day after the final tablet is taken.
The equivalent Wegovy tablet doses compared to the Wegovy injection are listed in the table below:
| Current Wegovy injection dose |
Wegovy tablet starting dose |
| 0.25mg |
1.5mg |
| 0.5mg |
4mg |
| 1mg |
9mg |
| 1.7mg |
9mg |
| 2.4mg |
25mg |
If you are on the 2.4mg dose of the weekly Wegovy injection, you can move directly to the 25mg daily tablet. For any other dose, including the 7.2mg injection, your prescriber will make a clinical decision on a sensible starting dose of the Wegovy tablet based on your current injection dose and how well you have tolerated the treatment. This is because there is some variation in the absorption of semaglutide in the tablet compared to the injection, so your prescriber may choose a different dose compared to the table.
Whatever your current dose, do not stop your injection or start the tablets without speaking to your prescriber first.
How to Switch From Mounjaro to Wegovy Tablets
Mounjaro contains tirzepatide, which is a different active ingredient from semaglutide. Tirzepatide acts on two hormone receptors (GLP-1 and GIP), whereas semaglutide acts on one. Because they are different molecules, there is no established way to convert a Mounjaro dose into an equivalent Wegovy tablet dose, and the two must not be taken together.2
For that reason, Pharmica does not carry your Mounjaro dose across into a matching tablet dose. Instead, if you switch from Mounjaro to the Wegovy tablets, you take your last Mounjaro injection, wait two weeks, and then start at the beginning tablet dose of 1.5mg and titrate up through 4mg, 9mg and 25mg, with a minimum of one month at each step.
Starting low and building up again gives your body time to adjust to a new medicine, reduces the chance of gastrointestinal side effects, and avoids assuming a dose equivalence that has not been clinically established between two different drugs. You may notice your appetite feels different during the changeover. That is a normal part of moving between treatments rather than a sign the new one is not working.
It is important to note that you may experience weight gain until you reach your maximum tolerated dose or maintainence dose again. This is to be expected as you are starting from a lower dose of GLP-1 medication again. It is not necessarily a sign that the treatment is not working either - that can only be established once you have completed the titration (gradual increase of the dose) and have been taking your maximum tolerated dose for at least three months.
As always, do not stop Mounjaro or start the Wegovy tablets without your prescriber's guidance.
What to Expect in the First Few Weeks After Switching
As your body absorbs the treatment differently, you may notice some changes to how you feel while taking the tablets compared to the injection.
The injection delivers a steady level of medication across the whole week. The tablet is taken daily, and its absorption can vary a little from one day to the next depending on how closely the fasting and timing rules are followed. In the first one to three months after switching, some people find their appetite control feels slightly less consistent than it did on the injection. You might feel hungrier later in the day, or notice your hunger shifts from day to day. This usually settles as your dose increases and your body adjusts.
Settling into a consistent daily routine is key here. The tablet only reaches its full effect when it is taken on an empty stomach (a minimum of 8 hours since you last ate anything) with the 30-minute wait afterwards, so building that morning habit matters more with the tablet than it does with the injection.
Wegovy Tablets vs the Injection: Side by Side
Both formats deliver semaglutide and work through the same mechanism. The practical differences are what most people weigh up, and our guide to Wegovy tablets vs the injection explores these in more depth.
|
Wegovy injection |
Wegovy tablets |
| How often |
Once a week |
Once a day |
| How it is taken |
Injected under the skin (abdomen, thigh or upper arm) |
Swallowed whole with a small sip of water |
| Food and timing |
Any time of day, with or without food |
Morning, empty stomach (a minimum of 8 hours since you last ate anything), then wait 30 minutes before eating, drinking or other medicines |
| Storage |
Refrigerated before first use |
Room temperature, no fridge needed |
| Doses |
0.25mg to 2.4mg (a 7.2mg dose is also available) |
1.5mg, 4mg, 9mg, 25mg |
| Suits people who |
Prefer a weekly routine and a less strict schedule |
Prefer to avoid needles and do not mind a daily fasting routine |
Neither format is universally "better". The right choice depends on your circumstances, how you have responded so far, and what you can realistically stick to.
Who Might the Tablet Suit Best?
Deciding whether to switch from the injection to the tablet has a number of considerations that you should think about carefully. The tablet suits some people very well, but might be a poor fit for others.
It may be a good option if you:
- Would rather avoid needles, or find self-injecting a barrier to staying consistent
- Want a treatment that does not need refrigeration, which can be simpler if you travel
- Have a reliable morning routine and can take a tablet the same way every day
- Simply prefer taking a pill
It may be less suitable if you:
- Find it hard to keep to a strict fasting and timing routine, for example because of shift work or an unpredictable schedule
- Take other medicines first thing in the morning that cannot easily be delayed by 30 minutes or more
- Experience nausea or reflux when taking medication without food
- Are losing weight steadily and tolerating your current injection well, in which case there may be little reason to change except for personal preference
Some people should not use semaglutide in either form, or need extra caution. It is not recommended in severe kidney or severe liver impairment, and it should not be used during pregnancy or while breastfeeding. Your prescriber will review your full medical history before agreeing to any switch to ensure you are suitable for treatment. Make sure you declare any health conditions and medications you may be taking.2
When to Seek Advice
Contact your GP or prescribing clinician if you:
- Experience severe or persistent nausea, vomiting or abdominal pain
- Develop severe upper abdominal pain that spreads to your back, which can be a sign of pancreatitis
- Notice signs of low blood sugar (shakiness, sweating, confusion), especially if you also take insulin or a sulfonylurea for type 2 diabetes
- Are unsure about your dose, your timing, or how to manage the gap between your last injection and your first tablet
A full list of side effects and interactions is in the patient information leaflet supplied with your medication. If you have type 2 diabetes, tell your prescriber, as your other diabetes medicines may need adjusting.2
Frequently Asked Questions
Are the side effects worse on the tablets than the injection?
Not necessarily. Because both contain semaglutide, the side effect profile is broadly similar. The most common effects are gastrointestinal: nausea, diarrhoea, vomiting, constipation and abdominal pain are all classed as very common (affecting more than 1 in 10 people), and they tend to be most noticeable when you first start or increase your dose. The main difference is that the injection can occasionally cause mild irritation at the injection site, which does not happen with a tablet.1 2
Will I start on the 25mg tablet straight away?
Only if you are switching from the 2.4mg weekly injection. From any other injection dose, or from Mounjaro, your prescriber will choose an appropriate starting dose and titrate you up. Do not assume you can begin at the maintenance dose right away.2
Can I take the tablet and the injection at the same time?
No. You should not double up on semaglutide, and semaglutide must not be combined with another GLP-1 medicine such as Mounjaro. The approach is to take your last injection, wait two weeks, then begin the tablets.2
Can I switch back to the Wegovy injection if the tablet does not suit me?
Yes. Because the tablet and the injection contain the same active ingredient, it is possible to move back to the injection if the tablet does not work for you, for example if the daily fasting and timing routine is hard to keep to. As with any switch, this should be planned with your prescriber, who will confirm the right injection dose and timing rather than you changing over on your own.
Will my appetite change when I first switch to the tablet?
It can. Moving from a weekly injection to a daily tablet can change how you feel because the injection gives a steady level of medication across the week, whereas the tablet's absorption varies a little day to day. In the first one to three months some people find their appetite control feels slightly less consistent, or notice more hunger later in the day. This usually settles as your dose increases and your body adjusts, and it is not a sign the tablet is not working.
Can I have tea or coffee when I take the tablet in the morning?
No. The tablet must be taken on an empty stomach (a minimum of 8 hours since you last ate anything) with a small sip of plain water only (no more than 120ml), and you then need to wait at least 30 minutes before eating or drinking anything else, including tea or coffee. Eating or drinking sooner than 30 minutes reduces how much semaglutide your body absorbs.2
References
- Wharton S, Lingvay I, Bogdanski P, et al. Oral Semaglutide at a Dose of 25mg in Adults with Overweight or Obesity (OASIS 4). New England Journal of Medicine. 2025;393(11). doi:10.1056/NEJMoa2500969
- Novo Nordisk Ltd. Wegovy 25mg tablets Summary of Product Characteristics. Electronic Medicines Compendium (eMC). Updated June 2026. emcpi.com
- Medicines and Healthcare products Regulatory Agency (MHRA). First GLP-1 tablet for weight loss approved in the UK. 11 June 2026. gov.uk
This article is intended for informational purposes only and does not replace professional medical advice. Always read the patient information leaflet supplied with your medication and speak to a healthcare professional if you have specific concerns.