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Buy Alli online

Alli is a lower dose version of Xenical. It’s a meal time pill that helps to reduce the amount of fat you take up from meals.

Tell us about the kind of treatment you’re looking for, and get expert advice on weight loss. Order Alli online to get it delivered regularly on subscription.

Starting from £49.00
Here’s what's included in the price:
Answer a few questions about your health so we can get to know you better.
Free 24h delivery
Your treatment delivered in secure packaging, the very next day.
We’ll check in with you regularly to see how your treatment is going.
This page was medically reviewed by Dr Daniel Atkinson, GP Clinical Lead on August 02, 2022. Next review due on August 01, 2024.

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Disclaimer: The information provided on this page is not a substitute for professional medical advice, diagnosis, or treatment. If you have any questions or concerns about your health, please talk to a doctor.

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How does Alli work for weight loss?

Alli is a weight loss treatment that helps your body get rid of fat you consume in food. The active ingredient in Alli, orlistat, interacts with enzymes in your digestive system, and stops them from absorbing fats as they normally would. Rather than being digested, these fats are removed from your body in your stool. It’s estimated that Alli gets rid of an extra 33% of fat when compared to what the body processes naturally.

It’s important to note that Alli will only be effective when used alongside dietary changes and exercise.

How safe is Alli?

If you take the medication as instructed, Alli should be a very safe treatment. Our clinician will make sure it’s suitable for you during your consultation, which will include measuring your BMI (body mass index).

If you have any concerns about using Alli, get in touch with us. Our experts can offer advice or suggest a different treatment if Alli isn’t working well for you. 

Who could benefit from using Alli?

Alli is only suitable for you if you have a BMI (body mass index) of 28 or above and you’re over the age of 18.

BMI compares your weight in relation to your height. For example, if you’re 1m 70cm (5ft 6”), you will need to weigh more than 81kgs in order to be suitable for Alli. You can use the NHS weight loss calculator to check your BMI.

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Before taking Alli tablets for weight loss

You’ll need to start a calorie controlled diet a few days before taking Alli so the body can get used to the new regime. You should then keep a food diary, which is a record of what you eat and when, so you can track what your diet is more accurately. Our clinician can talk you through putting together a food diary. Just login to your account and drop them a message.

It’s also important to set yourself a weight loss goal before taking Alli, which should be realistic and sustainable. Usually, aiming to lose around 1lb a week and a total of 5-10% of your starting weight is considered a reasonable target.

How to take Alli weight loss tablets

One tablet should be taken three times a day during or within one hour of your meal. It should be swallowed whole with water. Your meals should be well-balanced, but if they contain no fat at all, you don’t need to take Alli.

Our clinician will be able to advise you on dietary changes and foods that contain fat so you’re able to use Alli as effectively as possible.

How long will I need to take Alli for?

Alli shouldn’t be taken for longer than six months at a time, so if you’ve not noticed any changes in your weight within four months you should speak to our clinician about other options.

You should continue your diet and exercise routines after you’ve stopped using Alli to maintain any weight loss beyond the treatment.

Medically reviewed by
Dr Daniel Atkinson
GP Clinical Lead
on August 02, 2022.
Meet Daniel  
This page was medically reviewed by Dr Daniel Atkinson, GP Clinical Lead on August 02, 2022. Next review due on August 01, 2024.

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FAQ: Alli

Have something specific you want to know? Search our info below, or ask our experts a question if you can’t find what you’re looking for.

Orlistat vs Alli: what’s the difference?

Orlistat is the name of the active ingredient in Alli, but there’s also a generic medicine called Orlistat (that contains the same active ingredient). Normally generic and branded medicines come in the same doses, but Alli and Orlistat are a little different. Orlistat is only available in 120mg capsules, which is prescription strength. Alli comes in 60mg capsules which is pharmacy medicine strength.

So the dose (or medicine in this case) you use depends chiefly on how much weight you’re looking to lose.

What should I do if I miss an Alli pill?

If you forget to take a tablet within one hour of a meal, simply take it with your next meal and carry on as you normally would.

Don’t take two tablets to make up for a missed dose as this won’t provide any benefits and can lead to serious health risks.

Does Alli really work for weight loss?

When it’s used alongside lifestyle changes (including exercise and a healthy diet), Alli is a proven medication that provides strong results for many people.

So how effective is Alli as a weight loss treatment? It depends on who’s taking it, how overweight they are and what’s caused them to become overweight. Most people that use Alli will see a positive effect on their weight, even if it takes a little time.

What are the risks associated with obesity?

The risks associated with obesity can be very serious and include heart disease, cancer and diabetes. This is why Alli is prescribed to manage weight, even if there appears to be no immediate risk from these conditions.

There are many things you can do to tackle obesity, including following a healthy diet, taking regular, moderate exercise and staying active.

If you have any questions about how to combat obesity, our clinicians will be happy to help provide you with advice on with treating the condition.

Why should I buy Alli online from Treated?

We’re making weight loss treatment a personal thing. Talk to our experts, get recommendations from them on safe and suitable weight loss options for you, and select your medication. You can also choose how regularly you’d like to receive your treatment, and the quantity of it each time too.

We’re here to answer questions you might have about your medication at any point. Just send us a message. We’ll get in touch with you to find out how you’re getting on with your treatment, and if you want to make any adjustments, you can. Change, pause or cancel your subscription anytime.
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Our average rating based on 3270 reviews.