Weight Loss Injections vs Tablets: Which Is Right for You?

For several years, prescription weight loss treatment in the UK meant a weekly injection. That changed in 2026, when the medicines regulator licensed daily tablet forms. If you have been putting off treatment because you do not like needles, this is the part worth reading.

The short answer

Injections are taken once a week. Tablets are taken once a day. Both work on the same appetite hormones. Neither is automatically better. The right choice depends on your health, your other medicines and what you can keep up week after week.

How weekly injections work in practice

You use a pre-filled device once a week, on the same day, into the stomach, thigh or upper arm. Many people prefer this because it is one action a week and easy to remember. The device is designed for use at home and you do not see a needle during the injection.

The trade-off is storage. Injections need to be kept in a fridge before first use, which takes a little planning if you travel.

How daily tablets work in practice

You take one tablet a day. There is no fridge, no device and nothing to carry beyond a box. For people who travel often, share a kitchen, or simply do not want an injection, that is a real advantage.

The trade-off is routine. A daily tablet is a daily decision, and some tablets have instructions about timing and food that you need to follow for them to work properly. If you know you struggle with daily medicines, say so in your assessment. It is useful information, not a mark against you.

Do they work the same way?

Broadly, yes. Both act on the appetite signals your gut sends to your brain, so you feel full sooner and stay full for longer. Wegovy tablets contain semaglutide, the same active ingredient as the Wegovy injection, in a form your body can absorb by mouth. Foundayo contains orforglipron, a newer once-daily tablet licensed in 2026.

Side effects are similar across both forms. Feeling sick, constipation and an upset stomach are the common ones, and they are usually strongest at the start and after each dose increase.

What a prescriber actually weighs up

Your prescriber looks at your body mass index, any weight-related conditions such as type 2 diabetes or high blood pressure, everything else you take, and any treatment you have had before. They also ask practical questions. Do you travel for work? Do you have space for fridge storage? Have you managed daily medicines well in the past?

The honest answer is that the best treatment is the one you can take correctly and keep taking. A treatment that fits your week beats one that does not, whatever the headline data says.

Can I move from one to the other?

It is often possible, but it is a prescriber decision and not a straight swap. Doses do not translate one to one between forms. If you are already on treatment, tell us what you take and the dose you have reached so this can be planned safely.

What both have in common

Both are prescription-only medicines. Both are licensed for adults with a body mass index of 30 or more, and for adults with a body mass index of 27 or more who also have a weight-related health condition. Both are used alongside a reduced-calorie diet and more physical activity, not instead of them.

And both require the same safeguards. Before a first supply we independently verify your height and weight, because our regulator does not accept a questionnaire on its own for weight loss medicines. A registered prescriber then decides. A prescription is not guaranteed.