Regain confidence with UK licensed, and doctor-recommended weight loss injections
Mounjaro (Tirzepatide)
Starting from £159.00
- Dose titration every 4 weeks
- Clinically shown up to 20% reduction in body weight within 72 weeks
- Follows a dual agonist mechanism
Wegovy (Semaglutide)
Starting from £168.00
- Dose titration every 4 weeks
- Clinically shown up to 15% reduction in body weight within 68 weeks
- Follows a single agonist mechanism
Essential Insights into Weight Loss Treatment Options
Take a closer look at how our treatments work and how soon you can expect to see results.
Weight Loss Pharmacy offers access to MHRA-approved weight loss treatments in the UK. Our core treatments include Wegovy and Mounjaro weight loss injections, prescribed following an online consultation. Each injection is taken once-weekly, with doses typically increased at monthly intervals to support long-term results.
Aspects
Mounjaro Injection in the UK
Wegovy Injection in the UK
Core Ingredient
Tirzepatide
Semaglutide
Mechanism
Works by training your brain to improve hormonal functionality, ultimately regulating metabolism and prolonging satiety.
Works by training your brain to improve hormonal functionality, ultimately regulating metabolism and prolonging satiety.
Dosage Schedule
Once-weekly, same-day dose intake
Once-weekly, same-day dose intake
Receptor
GLP-1 and GPI
GLP-1
Proven Efficacy
Clinical studies show a 22.5% reduction in body weight within 72 weeks.
Clinical studies show a 15% reduction in body weight within 68-72 weeks.
Side Effects
- nausea/vomiting
- Difficulty passing stool
- Irregular bowel movement/ diarrhoea
- nausea/vomiting
- Difficulty passing stool
- Irregular bowel movement/
- Idiarrhoea
- Headache
Weight Loss Pharmacy offers MHRA-approved weight loss treatments in the UK. Our core treatments include Wegovy and Mounjaro injections. One injection lasts for 4 weeks. After this period, you are supposed to upgrade your dose. These treatments come with comprehensive guidelines (set by NICE).
Support Your Weight Loss Journey with Healthy Habits for Better Results
It takes more than an injection to speed up your weight loss journey. With a proper, healthy diet and a little exercise, you can achieve the best possible results soon.
150 Minutes of Moderate Exercise Per Week
Stay Physically Active Throughout the Day
Follow a Balanced, Nutrient-Dense Diet
Debunking the Myths
Myth: Mounjaro and Wegovy Are Interchangeable
Fact: No, they are not direct alternatives. While both are prescribed for weight loss, Mounjaro and Wegovy differ significantly in their active ingredients, mechanism of action, and clinical outcomes.
Myth: Mounjaro Delivers Similar Results to Wegovy
Fact: Clinical studies show that Mounjaro delivers faster and greater weight loss. On average, patients lost up to 20% of their body weight in 72 weeks, compared to 15% with Wegovy over 68 weeks.
Myth: The Side Effects Are Too Severe
Fact: Most side effects are mild and manageable. They vary by individual and usually improve as your body adjusts. When prescribed and monitored, side effects are typically temporary and well-tolerated.
Myth: The Injection Alone Is Enough
Fact: Weight loss injections work best when combined with moderate physical activity and a balanced, nutrient-rich diet. A holistic approach leads to better, more sustainable results.
Precautions while using weight loss treatments
To ensure your safety and achieve the best results with weight loss medications such as Mounjaro or Wegovy, it’s important to follow medical guidance carefully — especially during the initial stages of treatment.
- Dosage: Always follow the prescribed dosage and schedule. Do not take more than one GLP-1 medication (e.g. Mounjaro or Wegovy) at the same time, or combine them with similar medications, unless advised by a healthcare professional.
- Medication Interactions: If you are currently taking insulin, sulfonylureas, or other diabetes medications, consult your doctor or prescriber as dose adjustments may be necessary.
- Hydration & Diet: To help minimise gastrointestinal side effects, increase your water intake and maintain a balanced, nutritious diet throughout your treatment.
- When to Seek Medical Advice: If you experience symptoms such as severe abdominal pain, vision changes, or extreme fatigue, contact your clinician immediately.
Storage Instructions
Before first use, store your medication in a refrigerator (between 2–8°C).
After opening (if applicable), follow the storage instructions provided — some medications can be kept at room temperature for a limited time.
Pregnancy and Breastfeeding
If you are pregnant, planning to conceive, or breastfeeding, do not use these medications unless specifically prescribed by your healthcare provider.
How do these weight loss treatments work?
Mounjaro (Tirzepatide) and Wegovy (Semaglutide) are clinically proven, MHRA-approved injectable medications used for the management of obesity. Both weight loss treatments function by targeting hormonal pathways that affect appetite, satiety, and metabolic processes that are often disturbed in individuals struggling with excess weight.
These medications are not simple appetite suppressants. They mimic naturally occurring gut hormones involved in the regulation of hunger, insulin secretion, and glucose metabolism. By doing so, they address physiological and behavioural components of weight management.
Mounjaro is a newer class of weight loss treatment with a dual agonist mechanism. It acts on both GLP-1 and glucose-dependent insulinotropic polypeptide (GIP) receptors. GIP, another incretin hormone, improves insulin response and may further regulate appetite and fat metabolism. The dual targeting of GLP-1 and GIP pathways is believed to offer synergistic metabolic benefits, which may result in greater weight loss efficacy.
Wegovy is a GLP-1 receptor agonist. It mimics the action of glucagon-like peptide-1 (GLP-1) — a hormone that plays a key role in appetite regulation and blood sugar control. By activating GLP-1 receptors in the brain and digestive system, Semaglutide helps delay gastric emptying, promote a feeling of fullness after meals, reduce hunger, and support better glycaemic control.
By influencing these hormonal pathways, both treatments help you feel fuller for longer and reduce the urge to overeat, making it easier to stick to a healthier lifestyle.
What is the most effective way to lose weight?
Sustainable weight loss is best achieved through a combination of healthy lifestyle choices, including a balanced diet, regular physical activity, proper hydration, and adequate sleep. These habits form the foundation for long-term weight loss and help support overall metabolic health. However, many individuals may find it difficult to achieve significant weight loss through lifestyle changes alone due to underlying hormonal or physiological factors.
For those who need additional support, clinically approved weight loss treatments such as Wegovy (Semaglutide) and Mounjaro (Tirzepatide) may be prescribed by a licensed healthcare professional. These once-weekly injectable medications work by mimicking the body’s natural hormones to regulate appetite, enhance feelings of fullness, and improve blood sugar control. Both treatments follow a gradual dose escalation schedule to optimise results and reduce the likelihood of side effects.
Wegovy is a GLP-1 receptor agonist, while Mounjaro acts on both GLP-1 and GIP receptors, offering a dual mechanism that may lead to greater weight reduction. Clinical studies have shown that Mounjaro can reduce body weight by up to 22.5% over 72 weeks, while Wegovy has demonstrated a 15% reduction over 68 weeks. When used alongside lifestyle changes, these medications provide an effective, medically guided approach to weight loss.
Each treatment comes in a pre-filled pen, containing four doses to be used over four weeks. Doses are typically increased gradually to allow the body to adjust and to optimise results:
Mounjaro starts at 2.5 mg, with dose increases up to a maximum of 15 mg per week.
Wegovy begins at 0.25 mg, with gradual increases up to 2.4 mg per week.
Can I get weight loss treatments over the counter?
No. The most effective weight loss treatments, including Mounjaro (Tirzepatide) and Wegovy (Semaglutide), are prescription-only medications. These treatments are not available over the counter, as they require medical oversight due to their mechanism of action and potential side effects.
At Weight Loss Pharmacy, access to these medications is only given following a clinician-reviewed online consultation, where your medical history, current health status, and any ongoing medications are carefully assessed. This ensures that treatment is both safe and clinically appropriate, in line with UK prescribing guidelines.
While some over-the-counter products, such as herbal supplements or fat binders, are marketed for weight loss. They typically offer limited effectiveness and are not supported by the same level of clinical evidence or regulatory approval as prescription treatments. For medically guided, results-driven weight management, prescription options remain the most reliable approach.
See If You’re Eligible for Proven Weight Loss Injections
Complete your free online consultation to check your eligibility for your selected treatment. Our healthcare experts ensure ensure you receive the most suitable treatment.
