Weight Loss

Weight Loss Treatments
at 24 HR Pharmacy

At 24 HR Pharmacy, you can start a clinically guided weight-loss plan from home with three proven options: Mounjaro (Tirzepatide), Wegovy (Semaglutide), and Orlistat. Each treatment works differently, so we match you to the option that fits your health profile, goals, and preferences after a quick online assessment reviewed by our prescribers.

See Treatment Options

Why choose 24 HR Pharmacy

Pharmacist-led: Every request is checked by a UK-registered prescriber against your medical history and current medicines.
Fast, discreet service: Simple online questionnaire, clear next steps, and discreet delivery to your door.
Ongoing support: Guidance on using your treatment safely, plus practical lifestyle tips to help you get results.
Transparent and responsible: We prescribe only when it is safe and appropriate, and we will suggest alternatives if a medicine is not right for you.

Your Treatment Options

Orlistat (Xenical)

Wegovy

Mounjaro

Compare Your Options

Choosing the right treatment depends on your health profile, preferences, and goals. Here is a clear, side-by-side view of Mounjaro (Tirzepatide), Wegovy (Semaglutide), and Orlistat to help you understand how they differ before you complete your assessment.

	Mounjaro (Tirzepatide)	Wegovy (Semaglutide)	Orlistat
How it works	Tirzepatide is an incretin-based medicine that activates both GIP and GLP-1 receptors. It helps reduce appetite and cravings, increases feelings of fullness, and can slow gastric emptying, supporting weight loss when combined with diet and activity.	Semaglutide is a GLP-1 receptor agonist. It acts on appetite centres in the brain to reduce hunger and increase fullness, and can slow gastric emptying, helping you eat less when combined with diet and activity.	Lipase inhibitor capsule that reduces absorption of some dietary fat in the gut.
How you take it	Once-weekly subcutaneous injection using a pre-filled pen.	Once-weekly subcutaneous injection using a pre-filled pen.	Capsule with each main meal that contains fat (up to 3/day).
Typical use	Used alongside a reduced-calorie diet and increased activity with weekly dosing and gradual dose increases. In clinical studies, average weight loss was around 15–21% (and up to ~22.5% in some reports), though results vary.	Used alongside a reduced-calorie diet and increased activity with weekly dosing and gradual dose increases. In clinical studies, average weight loss was around 10–15%, though results vary.	Used alongside a reduced-calorie, lower-fat diet to minimise side effects and support weight loss. Average weight loss is typically more modest (around 5–10% over time), and results vary.
Who it may suit	Adults who prefer once-weekly dosing and are comfortable with injections.	Adults who prefer once-weekly dosing and are comfortable with injections.	Adults who prefer tablets and can maintain a lower-fat diet consistently.
Common side effects	Nausea, reflux/indigestion, reduced appetite, constipation or diarrhoea (often settle as dose stabilises).	Nausea, reflux/indigestion, reduced appetite, constipation or diarrhoea (often settle as dose stabilises).	Oily stools, urgent bowel movements, flatulence - more likely with high-fat meals.
Key cautions	Not for use in pregnancy/breastfeeding. Do NOT use if you or any family member have a history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2). Can affect oral contraceptives during dose increases; use added protection as advised.	Not for use in pregnancy/breastfeeding. Do NOT use if you or any family member have a history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).	Not for use in pregnancy/breastfeeding; avoid with chronic malabsorption or cholestasis.
Storage	Keep pens refrigerated before first use (do not freeze). Once opened/in use, they can be kept in the refrigerator or at room temperature (up to 28°C) away from heat. Once opened, the pen must be discarded after 30 days. See the patient information leaflet.	Keep pens refrigerated before first use (do not freeze). Once opened/in use, they can be kept in the refrigerator or at room temperature (up to 28°C) away from heat. Once opened, the pen must be discarded after 30 days. See the patient information leaflet.	Store at room temperature away from moisture.

← Swipe to see more →

When Each Option Makes Sense

Mounjaro (Tirzepatide)	Wegovy (Semaglutide)	Orlistat
A once-weekly routine with appetite control support. A structured dose-titration plan with prescriber guidance. You are comfortable using an injection pen and compliant with regular check-ins. How to use the pen Choose one day each week and inject on the same day each week. Inject under the skin (subcutaneous) of the abdomen, thigh, or upper arm; rotate injection sites. Wash your hands; check the pen label, expiry date, and that the solution looks clear. Use a new needle each time and follow the patient information leaflet for attaching the needle and selecting your prescribed dose. Inject the prescribed dose and keep the pen in place for a slow count of 5. Dispose of used needles in a sharps bin. Not suitable: if you are pregnant/breastfeeding, cannot use injections, or cannot use additional contraception during dose changes when on oral contraceptives.	A once-weekly plan focused on reducing hunger and improving fullness. Clear titration steps and ongoing support on side-effect management. How to use the pen Choose one day each week and inject on the same day each week. Inject under the skin of the abdomen, thigh, or upper arm; rotate injection sites. Wash your hands; check the pen label and expiry date, and follow the patient information leaflet carefully. Inject the prescribed dose and keep the pen in place until the dose is delivered. Dispose of needles/pen safely as described in the patient information leaflet. Not suitable: if you are pregnant/breastfeeding or prefer tablets.	A tablet option and are happy to keep dietary fat lower at meals. A non-injectable medicine with straightforward dosing (with each main meal). Not suitable: if your diet is frequently high in fat or you have conditions where Orlistat is not suitable (we screen for this).

Mounjaro (Tirzepatide)

Wegovy (Semaglutide)

Orlistat

A once-weekly routine with appetite control support.
A structured dose-titration plan with prescriber guidance.
You are comfortable using an injection pen and compliant with regular check-ins.

How to use the pen

Choose one day each week and inject on the same day each week.
Inject under the skin (subcutaneous) of the abdomen, thigh, or upper arm; rotate injection sites.
Wash your hands; check the pen label, expiry date, and that the solution looks clear.
Use a new needle each time and follow the patient information leaflet for attaching the needle and selecting your prescribed dose.
Inject the prescribed dose and keep the pen in place for a slow count of 5.
Dispose of used needles in a sharps bin.

Not suitable: if you are pregnant/breastfeeding, cannot use injections, or cannot use additional contraception during dose changes when on oral contraceptives.

A once-weekly plan focused on reducing hunger and improving fullness.
Clear titration steps and ongoing support on side-effect management.

How to use the pen

Choose one day each week and inject on the same day each week.
Inject under the skin of the abdomen, thigh, or upper arm; rotate injection sites.
Wash your hands; check the pen label and expiry date, and follow the patient information leaflet carefully.
Inject the prescribed dose and keep the pen in place until the dose is delivered.
Dispose of needles/pen safely as described in the patient information leaflet.

Not suitable: if you are pregnant/breastfeeding or prefer tablets.

A tablet option and are happy to keep dietary fat lower at meals.
A non-injectable medicine with straightforward dosing (with each main meal).

Not suitable: if your diet is frequently high in fat or you have conditions where Orlistat is not suitable (we screen for this).

Who Is Eligible?

We prescribe weight-loss treatment safely and appropriately. Here is how eligibility generally works at 24HR Pharmacy.

Core criteria we check

Age: Adults (18+).
BMI:
- Mounjaro (Tirzepatide) & Wegovy (Semaglutide): usually BMI 30 or above, or BMI 27+ with a weight-related condition (e.g., high blood pressure, type 2 diabetes, dyslipidaemia, obstructive sleep apnoea). These thresholds reflect the licensed indication.
- Orlistat: typically BMI 30 or above, or BMI 28+ with a weight-related condition.
Medical history & medicines: We screen for conditions and drug interactions that would make a treatment unsuitable or require caution (see below).
Pregnancy & breastfeeding: None of these medicines should be used during pregnancy or while breastfeeding.
Lifestyle commitment: All treatments must be used alongside a reduced-calorie diet and increased physical activity.

Note on ethnicity and BMI: UK guidance recognises higher health risk at lower BMI for people from South Asian, Chinese, other Asian, Middle Eastern, Black African or African-Caribbean backgrounds. We take this into account during the assessment, while still prescribing within licensed indications.

How Our Online Service Works?

Simple, safe, and designed around you. Here is what happens from start to finish.

Complete a Quick Online Assessment

Tell us about your health, goals, height/weight (for BMI), medical conditions, and any medicines or supplements you take. This helps us check whether Mounjaro (Tirzepatide), Wegovy (Semaglutide), or Orlistat is suitable.

What we ask for

Medical history (e.g., diabetes, thyroid, gallbladder, pancreatic issues)
Current medicines (including contraception, blood-pressure or diabetes tablets, anticoagulants)
Allergies and intolerances
Lifestyle factors (diet, activity, alcohol, smoking)
Pregnancy/breastfeeding status and family planning

Review By Our Prescriber

A UK-registered prescriber reviews your answers the same day. If we need anything else (e.g., a recent weight, blood pressure reading, or clarification), we will contact you either via phone or email.

What we check

Eligibility (e.g., BMI and clinical risk factors)
Safety (potential interactions, contraindications, red flags)
Starting dose and titration plan (for injectables) or meal-time guidance (for Orlistat)

If a medicine is not right for you, we will explain why and outline safer alternatives.

Fast, Discreet Dispensing & Delivery

Once approved, we dispense your treatment and send it in discreet packaging.

Cold-chain care for injections: Mounjaro and Wegovy are temperature-sensitive. We ship with appropriate packaging so they arrive in good condition.
Discreet parcels: No external product names on the box.
Convenient options: Home delivery with tracking. You will receive clear instructions inside your parcel.

Start with clear guidance

You will get easy-to-follow instructions tailored to your treatment:

Mounjaro / Wegovy: When and where to inject, dose-by-dose titration, missed-dose instructions, common side effects and what to do if they occur.
Orlistat: How to take with main meals, fat-intake guidance, managing side effects, and vitamin supplementation advice if needed.

Ongoing support & refills

We do not just post a parcel - we stay with you.

Check-ins: We encourage regular weight and waist measurements, plus symptom checkers to track tolerance.
Dose adjustments: For injectables, we will guide you through titration and help manage side effects like nausea or reflux.
Re-ordering made simple: Complete a short follow-up questionnaire so we can confirm everything is still safe before each repeat.
Message us anytime: Secure messaging for questions about technique, timing, side effects, or lifestyle tweaks.