Orlistat — Clinically Proven Weight Loss Without Injections

An oral weight loss capsule that blocks fat absorption. NICE-approved and prescribed in the UK for over 20 years.

GPhC Registered Pharmacy

NICE-Approved

20+ Years UK Use

Discreet Packaging

How This Medication Works

Blocks Dietary Fat

Orlistat works by inhibiting pancreatic and gastric lipases, enzymes that break down dietary fat. This prevents approximately 30% of the fat you eat from being absorbed.

Reduction in Calorie Intake

By blocking fat absorption, Orlistat creates a calorie deficit. The unabsorbed fat passes through the digestive system naturally, reducing the total energy your body absorbs from food.

No Injection Required

Unlike GLP-1 treatments, Orlistat is a simple oral capsule taken with meals. No needles, no learning curve. Straightforward weight loss for those preferring not to inject.

Clinical Evidence

NICE-Approved Treatment

Orlistat is approved by the National Institute for Health and Care Excellence and has been safely prescribed in the UK for over 20 years. Average weight loss is approximately 5 to 10% of body weight over 6 to 12 months when combined with a reduced-calorie, lower-fat diet.

Orlistat is particularly effective for people who struggle with appetite-suppressing medications or prefer not to use injections. Results depend heavily on diet and exercise, making it an ideal option for those committed to lifestyle changes.

These results represent average outcomes. Individual results may vary. Always discuss expected outcomes with your prescriber before starting treatment.

How to Take Orlistat

Dosage Instructions

120mg capsule taken with each main meal, up to 3 times daily. Take one capsule during or within 1 hour of a meal containing fat. There is no dose escalation with Orlistat; the dose remains constant throughout treatment.

Important: Orlistat is most effective when you follow a reduced-calorie, lower-fat diet (no more than 30% of calories from fat). If you eat a meal high in fat, you may experience digestive side effects (see below).

Duration: Orlistat can be taken for as long as needed. Many people take it for 6 to 12 months initially, then may continue or pause as part of a long-term weight management strategy.

Pricing

Orlistat 120mg	Monthly Price
Standard monthly pack	£21.99

Prices are placeholders and will be confirmed before launch.

Side Effects

Digestive Side Effects (Gastrointestinal)

Oily or fatty stools (most common)
Flatulence or wind
Urgent bowel movements
Oily spotting on underwear
Mild abdominal discomfort

Important to know: These side effects are directly related to unabsorbed fat passing through the digestive system. They are most common when you eat a high-fat meal. If you follow a lower-fat diet (no more than 30% of calories from fat), side effects are minimal. Many patients report no side effects at all when they stick to a sensible, lower-fat eating plan. These effects are not dangerous, just uncomfortable if you eat too much fat.

Who Is It Suitable For

BMI Requirements

BMI of 30 or higher, or BMI of 28 or higher if you have a weight-related health condition such as type 2 diabetes, high blood pressure, or high cholesterol.

Age

You must be 18 years or older to take Orlistat for weight loss.

Preference for Oral Medication

Orlistat is ideal if you prefer a capsule over injections or want to avoid appetite-suppressing drugs that can cause nausea or other systemic side effects.

Dietary Commitment

Orlistat works best for people willing to commit to a lower-fat diet. If you are ready to change your eating habits, Orlistat is a practical partner in that effort.

Frequently Asked Questions

How do I take Orlistat?

Take one 120mg capsule with each main meal containing fat, up to 3 times daily. Swallow the capsule whole with water during or within 1 hour of your meal. If you skip a meal or eat a fat-free meal, you can skip that dose.

What happens if I eat a high-fat meal?

If you eat a meal high in fat (more than 15g of fat), you may experience loose stools, urgency, or oily spotting within hours. This is the mechanism of Orlistat in action. These effects are harmless but uncomfortable. To minimise them, follow a lower-fat diet (no more than 30% of calories from fat) as instructed by your pharmacist.

Do I need to change my diet?

Yes, a lower-fat diet is essential for success with Orlistat. Aim for no more than 30% of your daily calories from fat. This means choosing lean proteins, whole grains, fruits, vegetables, and low-fat dairy. Your pharmacist will provide dietary guidance to help you make the transition and maximise weight loss while minimising side effects.

Is Orlistat the same as Alli?

Alli is an over-the-counter brand of orlistat containing 60mg per capsule. Prescription Orlistat contains 120mg per capsule, double the strength. Both work the same way, but prescription Orlistat is more potent and typically recommended for weight loss when supervised by a healthcare provider.

How long should I take Orlistat?

Most people take Orlistat for 6 to 12 months as part of a weight loss programme. If you reach your weight loss goal earlier, you may stop. If you continue to lose weight and feel it is helping, you can continue longer. Discuss duration and goals with your pharmacist to create a plan tailored to you.

Can I take Orlistat with other medications?

Orlistat can reduce the absorption of fat-soluble vitamins (A, D, E, K) and may interfere with the absorption of some medications. If you take any other medications, especially those for blood pressure or diabetes, tell your pharmacist. They will advise on timing and any necessary supplements (e.g., a multivitamin taken 2 hours before or after Orlistat).

Check Your Eligibility for Orlistat

Ready to start your weight loss journey with an oral, injection-free option? Our independent pharmacist will assess your eligibility for Orlistat.