If you’ve been looking into weight loss medication, you’ll probably have noticed that Wegovy is now available in two different forms: a once-daily tablet and a once-weekly injection. Both contain the same active ingredient, semaglutide, and both work through the GLP-1 pathway to help reduce appetite and support weight loss. So, if they contain the same medication, does it really matter which one you choose? Yes. Here, we explore Wegovy tablet vs injection to help you figure out which option is right for you.
Although the active ingredient is the same, the way you take Wegovy, how it is absorbed, how it fits around your daily routine and your personal preferences can all influence which option is right for you.
At Willow Health, we believe choosing weight loss medication shouldn’t simply be about choosing the medication with the biggest headline weight loss. It’s about finding an option that is clinically appropriate, safe, affordable and realistic for you to use consistently.
Wegovy contains semaglutide, a GLP-1 receptor agonist used alongside a reduced-calorie diet and increased physical activity for weight management.
Semaglutide works on areas of the brain involved in appetite regulation, helping you to:
It also slows stomach emptying, which can contribute to increased feelings of fullness.
But here’s the important part:
For one woman, taking a tablet every morning may feel much easier than having an injection. For another, remembering one injection each week may be far easier than having to think about fasting and medication timing every morning.
This is one of the biggest differences between oral Wegovy and injectable Wegovy. The tablet needs to be taken correctly to help ensure adequate absorption.
You need to:
1. Fast overnight for at least 8 hours.
2. Take the tablet on an empty stomach.
3. Swallow it whole with up to 120 mL of plain water.
4. Wait at least 30 minutes before eating, drinking or taking any other oral medication.
5. Do not crush, split or chew the tablet.
If your morning starts with a coffee as soon as you wake up, followed by breakfast and several other medications, you’ll need to build your Wegovy tablet into your routine carefully. The administration instructions are different from many other tablets, so taking it incorrectly could affect how much semaglutide is absorbed.
The Wegovy injection is taken once a week. It can be administered at any time of day and does not need to be taken around meals. For some people, this makes it much easier to fit into their lifestyle. You might choose a particular day of the week – for example, Sunday evening – and make this your regular Wegovy day. On the other hand, if you’re uncomfortable with needles or simply don’t like the idea of injecting yourself, the tablet may feel more appealing.
Both can be effective, but we can’t directly compare the results from the clinical trials and say that one is definitely more effective than the other. This is because the tablet and injection have been studied in different clinical trials and haven’t been directly compared against each other in the same study. In the OASIS 4 trial, people taking oral semaglutide 25 mg achieved an average weight loss of 13.6% after 64 weeks in the primary analysis. A separate analysis, which considered people who remained on treatment, estimated average weight loss of 16.6%.
In clinical trials of injectable Wegovy has also demonstrated significant and sustained weight loss when combined with diet and physical activity.
It’s therefore important not to compare these percentages as though they were from the same study. Instead of asking, “Which one will make me lose the most weight?”; a better question may be: “Which treatment can I take consistently and safely as part of my lifestyle?”
Both forms of Wegovy contain semaglutide, so the types of side effects are broadly similar.
The most common are digestive symptoms, including:
These symptoms tend to be more common when starting treatment or increasing the dose.
With oral Wegovy specifically, gastrointestinal side effects were most frequently reported during dose escalation. In OASIS 4, nausea occurred in 46.6%, vomiting in 30.9%, diarrhoea in 17.6% and constipation in 20.1% of people taking oral semaglutide. Most were mild to moderate and short-lived.
This is one reason why Wegovy treatment starts at a low dose and gradually increases.
Your diet can make a big difference to how you feel while taking weight loss medication.
Some simple strategies include:
Eat smaller portions
Your appetite may decrease considerably, so listen to your hunger and fullness cues rather than feeling you need to finish everything on your plate.
Eat slowly
Give your body time to recognise that you’ve had enough.
Prioritise protein
When you’re eating less overall, getting enough protein becomes particularly important for maintaining muscle mass during weight loss.
Stay hydrated
This is particularly important if you’re experiencing vomiting, diarrhoea or constipation.
Be mindful of high-fat meals
Large, rich or high-fat meals can worsen digestive symptoms for some people.
Keep fibre in your diet
Fibre can be particularly helpful for constipation, although increasing it gradually and drinking
enough fluid is important.
1. What is my morning routine like?
Could you realistically take a tablet after an overnight fast and wait 30 minutes before breakfast, coffee and other medication? If your mornings are already hectic, this is worth considering.
2. How do I feel about injections?
Are you genuinely uncomfortable with needles, or is it simply something you’ve never tried
before? For some people, the thought of an injection is much worse than the reality. For others, avoiding needles is an important priority.
3. Would I rather take something every day or once a week?
Think about your own habits.
Daily tablet: potentially easy to build into a morning routine, but you need to remember it every day and follow the administration instructions.
Weekly injection: one dose to remember each week, but you need to be comfortable administering an injection.
4. What other medications do I take?
This is particularly important if you take several oral medications. Oral semaglutide can affect the absorption of some medicines, so your medication should be reviewed before starting treatment. For example, the prescribing information recommends monitoring considerations for people taking levothyroxine or warfarin.
This is one reason why weight loss medication should be prescribed following an individual
assessment rather than simply purchased online.
5. What fits my budget?
Weight loss medication can be a significant ongoing expense. Prices vary depending on the medication, dose and pharmacy, so cost should be part of the decision from the beginning.
You don’t have to arrive at your appointment already knowing which medication you want.
At Willow Health, we can talk through the different options available, including:
We’ll consider your:
The aim is to find the option that makes sense for you, rather than simply choosing whichever medication you’ve heard the most about.
One of the biggest misconceptions about weight loss medication is that the medication does all the work.
In reality, medication works alongside the lifestyle changes that support your long-term health. When you’re eating less, it’s particularly important to think about what you’re eating, not just how much.
We want to help you:
At Willow, our focus isn’t simply on getting the number on the scales down. It’s about helping you lose weight while protecting your health, nutrition, muscle mass and long-term wellbeing.
At Willow Health, our specialist dietitian can talk you through your options, assess your suitability and help you make an informed decision about the most appropriate weight loss medication for you.
Please note: This article is for general information and does not replace individual medical advice. Weight loss medication is prescription-only and is not suitable for everyone. Your suitability should be assessed by an appropriately qualified healthcare professional.
