Orlistat & Xenical (Fat Blockers)

Orlistat & Xenical (Fat Blockers)


Orlistat and Xenical are clinically proven fat blocker tablets widely used in the UK to support weight management in adults. They work by preventing your body from absorbing a significant portion of the fat you consume, helping to reduce overall calorie intake when combined with a balanced diet and regular exercise. Available in 60mg over-the-counter and 120mg prescription-strength formulations, these medicines are suitable for adults with a BMI of 28 or above. Always speak to a pharmacist or GP before starting any weight loss treatment.

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What Are Orlistat and Xenical (Fat Blockers)?

Orlistat is the active ingredient found in fat blocker tablets such as Xenical (120mg, prescription-only) and Alli (60mg, available over the counter). These medicines belong to a class of treatments known as lipase inhibitors, designed to support weight loss in adults when used alongside a calorie-controlled diet. If you are looking to buy orlistat online UK, it is important to understand exactly how these treatments work and whether they are appropriate for your individual health needs. Orlistat 120mg capsules UK are the prescription-strength option recommended for those with a BMI of 30 or above, or 28 and above with associated weight-related health conditions. You may also find our weight loss helpful for targeting related symptoms.

What Causes Weight Gain and Who Might Need Fat Blocker Tablets?

Weight gain is a complex condition influenced by a range of biological, lifestyle, and environmental factors. Understanding the underlying causes can help determine whether fat blocker tablets UK are a suitable option as part of a wider weight management plan. If you experience related concerns, exploring our men health may provide additional relief.

  • Excess calorie consumption: Regularly eating more calories than the body burns leads to fat storage over time.
  • Sedentary lifestyle: Reduced physical activity lowers the number of calories the body uses each day.
  • Hormonal imbalances: Conditions such as hypothyroidism or polycystic ovary syndrome (PCOS) can contribute to weight gain.
  • Genetics: Family history can play a role in how the body stores and processes fat.
  • Medications: Certain medicines, including steroids and antidepressants, can cause weight gain as a side effect.
  • Emotional eating: Stress, anxiety, and low mood can trigger overeating or unhealthy food choices.

For individuals who have struggled to lose weight through diet and exercise alone, Xenical weight loss tablets or orlistat may be considered as part of a medically supervised programme.

How Do Orlistat and Xenical Fat Blockers Work?

Orlistat works by inhibiting the action of lipase, an enzyme produced in the pancreas and small intestine that is responsible for breaking down dietary fats. When lipase is blocked, approximately one third of the fat you eat passes through the digestive system unabsorbed, rather than being stored in the body. This reduction in fat absorption contributes to a lower overall calorie intake, supporting gradual and sustained weight loss over time.

Orlistat 60mg (Over the Counter)

The 60mg formulation, available without a prescription from registered UK pharmacies, is suitable for adults aged 18 and over with a BMI of 28 or above. It is taken with meals up to three times daily and is intended as a short-term weight management aid alongside dietary changes.

Orlistat 120mg (Prescription-Strength)

Orlistat 120mg capsules UK are the prescription-strength version, sold under the brand name Xenical. This higher-dose option is recommended for individuals with a BMI of 30 or above, or those with a lower BMI who have additional weight-related health risks such as type 2 diabetes or high blood pressure. A valid prescription from a GP or qualified prescriber is required.

Are There Any Side Effects of Orlistat or Xenical?

Like all medicines, fat blocker tablets can cause side effects, particularly in the early stages of treatment or if a high-fat meal is consumed. The most commonly reported side effects are gastrointestinal and include oily or fatty stools, increased frequency of bowel movements, and flatulence with oily discharge. These effects are typically mild and serve as a reminder to follow a low-fat diet while taking orlistat. If you experience persistent or severe side effects, stop taking the medication and speak to your pharmacist or GP promptly.

Who Can Use Orlistat and Xenical Fat Blockers?

Orlistat is suitable for adults aged 18 and over who have a BMI of 28 or above. It is not recommended for individuals who are pregnant, breastfeeding, or have certain medical conditions such as chronic malabsorption syndrome or cholestasis. Those taking medicines for epilepsy, thyroid disorders, or anticoagulants such as warfarin should seek medical advice before use. If you are unsure whether you can buy orlistat online UK safely, always consult a pharmacist or GP before purchasing.

  1. Adults with a BMI of 28 or above (over-the-counter 60mg)
  2. Adults with a BMI of 30 or above (prescription 120mg Xenical)
  3. Adults with weight-related conditions such as type 2 diabetes (prescription route, BMI 28+)
  4. Not suitable for those who are pregnant or breastfeeding
  5. Not suitable for individuals with chronic malabsorption conditions

How to Take Orlistat Correctly

For best results, orlistat should be taken immediately before, during, or up to one hour after each main meal. If you miss a meal or your meal contains no fat, you can skip that dose. It is important to follow a nutritionally balanced, calorie-controlled diet that derives no more than 30% of calories from fat. Taking orlistat with a very high-fat meal significantly increases the risk of gastrointestinal side effects. A daily multivitamin supplement taken at bedtime is often recommended, as orlistat can reduce the absorption of fat-soluble vitamins A, D, E, and K.

Why Choose Orlistat and Xenical from Cured Pharmacy?

When you buy orlistat online UK from Cured Pharmacy, you can be confident you are purchasing genuine, licensed medication from a regulated UK pharmacy. Our qualified pharmacists are on hand to answer your questions, check your suitability, and ensure you receive the right product for your needs. We offer fast, discreet delivery across the UK and a straightforward consultation process, making it easy to access cheap orlistat UK pharmacy options without compromising on quality or safety. Whether you are looking for Xenical weight loss tablets on prescription or the over-the-counter 60mg option, our team is here to support your weight management journey every step of the way. Many customers also benefit from products in our strap ons alongside this treatment.

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Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Can I buy orlistat online in the UK without a prescription?

Yes, the 60mg strength of orlistat (sold as Alli) is available over the counter in the UK for adults with a BMI of 28 or above. The 120mg prescription-strength version (Xenical) requires a valid prescription from a qualified prescriber or GP before purchase.

What is the difference between Xenical and orlistat?

Xenical is the branded version of orlistat at the 120mg prescription-strength dose. Generic orlistat 120mg capsules UK are available at a lower cost and contain the same active ingredient. The over-the-counter version is available at 60mg under the brand name Alli.

How much weight can I expect to lose with orlistat?

Results vary between individuals. Clinical studies suggest that people using orlistat alongside a calorie-controlled diet and regular exercise lose more weight than those using diet and exercise alone. It is not a quick-fix solution and works best as part of a long-term lifestyle change. Speak to your GP for personalised guidance.

Are fat blocker tablets safe to use long term?

Orlistat is generally considered safe for long-term use under medical supervision. Prescription-strength Xenical may be used for up to two years in suitable patients. Regular monitoring by your GP is recommended. Always inform your pharmacist of any other medicines you are taking to avoid potential interactions.

What side effects should I be aware of when taking orlistat?

Common side effects of fat blocker tablets UK include oily or fatty stools, increased bowel movements, and flatulence. These are more likely to occur if you eat high-fat meals. Following a low-fat, balanced diet significantly reduces the risk. If side effects are severe or persistent, consult your pharmacist or GP.

Can I take orlistat if I have type 2 diabetes?

Orlistat can be used by people with type 2 diabetes, and may actually support improvements in blood glucose control as a result of weight loss. However, you should speak to your GP before starting treatment, as your diabetes medication may need to be adjusted during weight loss.

How quickly will my orlistat be delivered if I buy online?

When you buy orlistat online UK from Cured Pharmacy, we aim to dispatch your medication promptly once your consultation is complete and any required prescription has been verified. Delivery options include standard and express services, so you can receive your treatment quickly and discreetly.

Is cheap orlistat from a UK pharmacy as effective as branded Xenical?

Yes. Generic orlistat contains the same active ingredient at the same dose as branded Xenical weight loss tablets. All licensed generic medicines sold by UK pharmacies must meet the same safety and efficacy standards set by the MHRA. Choosing a generic option is a cost-effective way to access the same treatment.

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Clinical Leads

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Content last updated: 31 Mar 2025

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