How Alli Works
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Active ingredient: Orlistat (60mg)
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Mechanism: Inhibits lipase enzymes to prevent fat absorption in the digestive tract.
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Dosage: Take 1 capsule with each main meal containing fat (up to 3 per day). Skip a dose if your meal does not contain fat.
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Diet guidance: Manufacturer recommends meals with around 15g of fat for best results.
Expected Results
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Noticeable weight loss typically occurs after 1–3 months of use.
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Works best when combined with healthy eating and regular exercise.
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If no weight loss occurs after 3 months, treatment should be stopped.
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Do not use for more than 6 months continuously.
Possible Side Effects
Most side effects are digestive in nature and linked to fat intake. These usually improve over time.
Common side effects include:
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Oily stools or discharge
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More frequent or urgent bowel movements
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Stomach pain, gas, or upset stomach
Other side effects:
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Headache
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Back pain
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Menstrual changes
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Cold-like symptoms
Seek medical advice immediately if you experience:
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Severe abdominal pain
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Itching, yellowing skin/eyes, or dark urine
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Signs of allergic reaction
Who Should Not Take Alli
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Pregnant or breastfeeding women
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Individuals with chronic malabsorption syndrome or cholestasis
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Anyone not overweight (BMI < 28)
Where to Buy Alli
Alli can be requested from Asda Online Doctor or other registered UK providers. After completing an online consultation, treatment may be:
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Delivered discreetly to your home, or
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Collected in-store at an Asda Pharmacy within 4 hours of approval.
Alli Alternatives
If Alli is not suitable, your healthcare provider may recommend:
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Prescription weight loss tablets (e.g., Mysimba, Orlistat 120mg)
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Injections (Wegovy, Mounjaro, Saxenda) for more intensive treatment options
