Weight Loss Injections vs Tablets: Which Treatment Is Right for You?

Losing weight is not always straightforward. While eating a balanced diet and staying active remain the foundation of healthy weight management, some people may benefit from prescription weight-loss medication. In the UK, both weight loss injections and weight loss tablets are available to help eligible adults achieve and maintain a healthier weight.

With treatments such as Mounjaro®, Wegovy®, Oral Semaglutide, Orlistat, and Mysimba®,  many people wonder whether they should choose weight loss jabs or pills. The answer depends on several factors, including your health, lifestyle, personal preferences, and weight-loss goals.

This guide explains the differences between weight loss injections and tablets, how they work, and which option may be suitable for you.

Understanding Weight Loss Medication

Prescription weight-loss medicines are designed to support healthy lifestyle changes rather than replace them. They are typically recommended for adults who meet specific BMI criteria and have struggled to lose weight through diet and exercise alone.

What Are Weight Loss Injections?

Weight loss injections are medicines that help regulate appetite and reduce food cravings. They mimic hormones naturally produced in the body, helping you feel fuller for longer and consume fewer calories.

Popular weight loss injections available in the UK include:

• Mounjaro® (tirzepatide)
• Wegovy® (semaglutide)

These medicines are prescribed alongside dietary advice and increased physical activity to support long-term weight management.

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What Are Weight Loss Tablets?

Weight loss tablets are oral medications taken daily. Depending on the medicine, they may reduce fat absorption or help control appetite and cravings.

Examples available in the UK include:

• Wegovy pill
• Orlistat
• Mysimba®

For people who are uncomfortable with injections, tablets may provide a convenient alternative. Note, these tablets must be taken after an 8 hour fast on an empty stomach (e.g. just after you waks up). You must not consume anything other than water for 30 minutes after taking the medicines – such as other drinks, foods or medicines. Speak to your pharmacist for more information, especially if this affects the timings of taking other medicines. 

How Do These Treatments Work?

Although both treatments aim to support weight loss, they work differently.

Weight loss injections (Mounjaro or Wegovy) mainly suppress appetite and slow stomach emptying, helping you feel satisfied after smaller meals. By contrast, tablets such as Orlistat reduce the amount of fat absorbed from food, while Mysimba works on areas of the brain involved in hunger and cravings.

Regardless of the medication chosen, lasting results depend on maintaining healthy eating habits and regular physical activity.

Weight Loss Injections vs Tablets: What’s the Difference?

Both options can be effective, but they differ in terms of administration, convenience, and how they influence weight loss.

Most injections are taken weekly, whereas tablets usually require daily dosing. Injections mainly target appetite control, while tablets may work by reducing fat absorption or influencing hunger signals.

Comparison Table

Feature	Weight Loss Injections	Weight Loss Tablets
Frequency	Weekly or daily	Daily
Method	Injection pen	Oral tablet
Main action	Appetite suppression	Fat absorption or appetite control
Prescription required	Yes	Usually
Storage	Some require refrigeration	Room temperature
Suitable for needle phobia	No	Yes

Many patients prefer weekly injections because they are easier to fit into busy lifestyles. However, others appreciate the convenience and familiarity of taking tablets.

Weight Loss Jabs or Pills: Which Should You Choose?

Choosing between weight loss injections and tablets is a personal decision and should always involve a discussion with a qualified healthcare professional.

Several factors can influence which treatment is most appropriate:

• Your body mass index (BMI)
• Existing medical conditions
• Previous weight-loss attempts
• Lifestyle and personal preferences
• Cost considerations
• Tolerance of side effects

Ultimately, the right treatment is one that is safe, effective, and sustainable for your individual circumstances.

Who Are Weight Loss Tablets Suitable For?

Weight loss tablets can be an excellent option for people who prefer oral medication or are uncomfortable using injection pens. They may also appeal to those seeking a lower-cost treatment or individuals with more modest weight-loss goals.

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Common Tablet Treatments Available in the UK

Oral Semaglutide ( Wegovy Pill )

Oral semaglutide ( Wegovy Pill) is a daily tablet designed to support weight loss by mimicking natural fullness hormones. Used alongside a reduced-calorie diet and increased physical activity, it helps reduce hunger and promote sustainable weight loss.

Orlistat

Orlistat works by reducing the amount of dietary fat absorbed by the body. It is usually taken with meals and is often recommended alongside a reduced-fat diet.

Mysimba®

Mysimba combines two active ingredients that influence appetite and food cravings. It may be prescribed for adults who meet the relevant eligibility criteria.

Weight Loss Tablets May Be Suitable For:

• Patients who prefer oral medication.
• Individuals uncomfortable with injections.
• People seeking a more affordable treatment option.
• Those aiming for gradual weight loss.
• Adults who can commit to taking medication regularly.

Why Choose Weight Loss Injections Over Tablets?

In recent years, weight loss injections have attracted considerable attention because clinical studies have shown impressive results in suitable patients.

Medicines such as semaglutide and tirzepatide work by reducing appetite, increasing feelings of fullness, and helping people maintain a calorie deficit more easily. As a result, they can support significant weight reduction when combined with lifestyle changes.

Another advantage is convenience. Weekly injections mean patients do not need to remember multiple tablets each day, which many people find easier to manage.

Common Reasons People Choose Injections

• Greater average weight loss.
• Reduced appetite and food cravings.
• Once-weekly administration.
• Support for long-term weight management.
• Clinically proven effectiveness.

Although injections may provide better results for some people, they are not automatically the best option for everyone. Cost, side effects, and individual preferences should always be considered.

Best Weight Loss Services in the UK

If you’re looking for the best weight loss services in the UK, it’s important to choose a provider that offers safe, clinically approved treatments together with professional support. Effective weight management is about much more than medication alone – ongoing guidance, regular reviews, and personalised care all play an important role in achieving sustainable results.

Hollowood Chemists – Trusted Weight Loss Support Across the UK

At Hollowood Chemists, we provide a comprehensive private weight management service designed around your individual needs. Whether you are considering Mounjaro, Wegovy, or other prescription weight loss treatments, our experienced pharmacists can help you find a suitable option following a clinical assessment. 

We offer competitive and effective weight loss services in North West England, including Trafford (Sale, Village), Bolton (Market), St Helens (Garswood, Heatons, Millfields, Haydock, Bradlegh), Wigan (Moorside, Mesnes, Ince, Blackhorse (Blackrod), Northwich (Barnton), Crewe, and Clayton in Staffordshire.

Our service focuses on supporting long-term lifestyle changes rather than offering quick fixes. Patients receive professional advice, treatment monitoring, and ongoing support throughout their weight loss journey.

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Weight Loss Injections vs Tablets: Results Comparison

Weight loss varies between individuals. Factors such as diet, exercise, age, and adherence to medication all influence outcomes. Clinical studies suggest that injectable treatments generally produce greater average weight loss compared with tablets.

Comparison Table

Treatment	Active Ingredient	How Often Is It Taken?	Average Weight Loss
Mounjaro® Injection	Tirzepatide	Weekly	Up to 22.5%
Wegovy® Injection	Semaglutide	Weekly	Up to 15%
Wegovy Pill	Semaglutide	Daily	Up to 15%
Mysimba® Pill	Naltrexone + Bupropion	Daily	Up to 9%
Orlistat Pill	Orlistat	Three times daily	Up to 5–10%

Note: Individual outcomes can vary considerably from clinical trial averages and between individuals

Weight Loss Injections vs Tablets: Benefits and Drawbacks

Both forms of medication have advantages and disadvantages. Weight loss injections are often associated with higher effectiveness and greater appetite control. Weekly dosing also provides added convenience for many patients.

Benefits of Weight Loss Injections

• Higher effectiveness.
• Reduced hunger and cravings.
• Convenient weekly dosing.
• Support for long-term weight management.

Tablets, however, offer a needle-free approach and are generally easier to store. They are also typically less expensive than injectable treatments.

Benefits of Weight Loss Tablets

• Needle-free treatment.
• Easier storage.
• Lower overall cost.
• Suitable for patients uncomfortable with injections.

Potential Drawbacks

Neither option is completely free from side effects, and both require a long-term commitment to healthy lifestyle habits. Medication alone is unlikely to provide lasting results without dietary improvements and regular exercise.

Related Article: Rapid Weight Loss vs. Sustainable Weight Loss: Which One Actually Works Long-Term?

Side Effects of Weight Loss Injections and Tablets

Like all medicines, weight-loss treatments can cause side effects. Fortunately, many are mild and improve as the body adjusts.

Common Side Effects of Weight Loss Injections

The most frequently reported side effects include:

• Nausea
• Vomiting
• Diarrhoea
• Constipation
• Stomach discomfort

Common Side Effects of Weight Loss Tablets

People taking tablets may experience:

• Oily stools (specifically with Orlistat)
• Flatulence
• Abdominal discomfort
• Headaches
• Nausea

Related Article: Mounjaro Side Effects: Common Symptoms, Timeline, Warning Signs and How to Manage Them

When Should You Seek Medical Advice?

You should seek medical attention immediately if you experience:

• Severe abdominal pain
• Persistent vomiting
• Signs of dehydration
• Difficulty breathing
• Symptoms of an allergic reaction

Always read the patient information leaflet supplied with your medicine.

Weight Loss Injections vs Tablets: Which Option Offers Better Results?

For many people, weight loss injections provide greater average weight reduction compared with tablets. However, effectiveness is only one part of the picture.

Tablets may still be the preferred choice for those who dislike injections, are looking for a lower-cost option, or have specific medical considerations.

There is no universal “best” treatment. The most suitable option depends on your health, preferences, and weight-loss goals. A healthcare professional can help assess your eligibility and recommend a treatment plan tailored to your needs.

Mounjaro vs Wegovy: Which Injection Is Better?

Mounjaro vs Wegovy medicines are effective, but they contain different active ingredients.

Mounjaro®

• Contains tirzepatide.
• May provide greater average weight loss.
• Administered once weekly.

Wegovy®

• Contains semaglutide.
• Once-weekly injection.
• Widely used for obesity management.

The most suitable option depends on your medical history, BMI, and individual treatment goals. A healthcare professional can help determine which treatment may be appropriate.

How to Store Weight Loss Injections and Tablets

Storage Requirements for Weight Loss Injections

Many injection pens require refrigeration before first use. Important points include:

• Store according to the manufacturer’s instructions.
• Avoid freezing.
• Protect from excessive heat.
• Follow guidance when travelling.

Storage Requirements for Weight Loss Tablets

Tablets are generally easier to store and should:

• Be kept at room temperature.
• Remain away from moisture and direct sunlight.
• Be stored out of reach of children.
• Never be used beyond their expiry date.

Related Article: How to Store Mounjaro ( Weight loss Injection ) Correctly Complete Guide 

Cost of Weight Loss Injections vs Tablets in the UK

Private treatment costs vary between providers.

Weight Loss Injection Prices

Treatment	Typical Monthly Price
Mounjaro®	£150–£350
Wegovy®	£80–£220

 

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Weight Loss Tablet Prices

Treatment	Typical Monthly Price
Oral Semaglutide ( Wegovy )	Coming Soon.
Orlistat	£35–£70
Xenical®	£45–£90

Prices may vary depending on dosage and provider. Check Here

What Does the Hollowood Chemists Weight Loss Service Include?

• Personalised weight loss consultations.
• Access to prescription weight loss injections, including Mounjaro® and Wegovy®.
• BMI and eligibility assessments.
• Regular treatment reviews and dose adjustments.
• Expert advice from qualified pharmacists.
• Safe and regulated treatment from a trusted UK pharmacy.
• Support with healthy eating and sustainable lifestyle changes.

Medication weight loss service

Switching from Mounjaro to a Semaglutide Tablet: What Should You Consider?

Switching from Mounjaro® (tirzepatide) to a semaglutide tablet is a clinical decision that should only be made following a consultation with a qualified healthcare professional. While both medicines can support weight management, they work differently and may not produce the same results for every patient.

Pill vs Injection

One of the main considerations is the method of administration. Mounjaro is a once-weekly injection, whereas semaglutide tablets must be taken daily according to specific instructions. Some people prefer the convenience of a weekly injection, while others feel more comfortable taking a tablet. The most suitable option is often the one that fits best with your lifestyle and helps you remain consistent with treatment.

Side Effect Tolerance

Both treatments can cause gastrointestinal side effects, particularly during the first few weeks of treatment. Common symptoms include nausea, vomiting, diarrhoea, constipation and abdominal discomfort. If you experience persistent or troublesome side effects whilst taking Mounjaro, your prescriber may discuss whether an alternative treatment could be appropriate.

Key Differences

Mounjaro contains tirzepatide, which activates both the GIP and GLP-1 receptors. Semaglutide medicines work only through the GLP-1 receptor pathway. Clinical studies have shown that tirzepatide may achieve greater average weight loss in some patients compared with semaglutide, although individual results vary and treatment decisions should always be based on clinical suitability rather than weight-loss expectations alone.

If you are considering changing from Mounjaro to another weight loss treatment, speak to a pharmacist or prescriber who can review your medical history, treatment progress and personal goals before making a recommendation.

Final Thoughts

Weight loss injections and tablets can both play an important role in supporting healthy weight management. While treatments such as Mounjaro® and Wegovy® have demonstrated impressive results, tablets like Oral Semaglutide, Orlistat, and Mysimba remain valuable options for many patients.

The best approach is one that combines appropriate medication with healthy eating, physical activity, and ongoing support. Before starting any treatment, always consult a qualified healthcare professional to ensure it is safe and suitable for you.

 

Can Mounjaro® Affect Your Period if You Have PCOS? A UK Guide to Weight Loss Injections and Period Delay Tablets

Yes, Mounjaro® (tirzepatide) can indirectly affect your period if you have PCOS. Although menstrual changes are not listed as a common side effect of Mounjaro, weight loss and improvements in insulin resistance may lead to changes in cycle length, bleeding patterns and ovulation. Some women experience temporary irregular periods, while others notice more regular menstrual cycles as their weight decreases.

Polycystic ovary syndrome (PCOS) is one of the most common hormonal conditions affecting women in the UK and is often associated with irregular periods, weight gain, acne and excess hair growth. Because insulin resistance plays a key role in PCOS, many women find losing weight particularly challenging.

With the increasing use of weight loss injections such as Mounjaro for PCOS, questions about Mounjaro and periods, fertility, ovulation and the use of period delay tablets have become more common. While some women report changes to their menstrual cycle after starting treatment, these effects are thought to be linked mainly to weight loss and hormonal changes rather than the medication itself.

Understanding how Mounjaro, PCOS and the menstrual cycle are connected can help women make informed decisions about their weight management and reproductive health.

Understanding PCOS and Irregular Periods

PCOS affects the way the ovaries function and is often associated with irregular or absent periods. Many women with the condition experience hormonal imbalances that interfere with normal ovulation.

Insulin resistance is a major factor in PCOS. Higher insulin levels can increase androgen production, which may disrupt the menstrual cycle and contribute to symptoms such as weight gain and fertility difficulties. This is why weight management is often recommended as part of a long-term treatment plan.

Common symptoms of PCOS include:

•       Irregular periods or missed periods.
•       Weight gain and difficulty losing weight.
•       Acne and oily skin.
•       Excess facial or body hair.
•       Problems with fertility.
•       Polycystic ovaries visible on ultrasound.

Even modest weight loss can help improve hormone balance and menstrual regularity in some women.

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Can Mounjaro Affect Your Period if You Have PCOS?

Many women wonder whether Mounjaro and periods are linked. At present, menstrual changes are not listed as a common side effect of Mounjaro, and there is no evidence to suggest that the medication directly affects the menstrual cycle.

However, some women report changes after starting treatment. These may include:

•       Lighter periods.
•       Heavier bleeding.
•       Delayed periods.
•       Spotting between periods.
•       Shorter or longer cycles.
•       More regular periods following weight loss.

Women with PCOS may be particularly aware of these changes because their hormone levels are already affected by the condition.

Most experts believe that period changes on Mounjaro are more likely to be related to weight loss, hormonal adjustments and improved insulin sensitivity rather than the medicine itself.

 

Read: Period Delay and the Contraceptive Pill: Can You Use Both?

Why Weight Loss Can Change Your Menstrual Cycle

If you have ever wondered, “Can weight loss affect your period?”, the answer is yes.

The NHS states that maintaining a healthy weight can improve menstrual regularity and help manage symptoms associated with polycystic ovary syndrome (PCOS). Rapid changes in body weight may temporarily alter the menstrual cycle, while gradual weight reduction often helps improve hormone balance in women with PCOS.

Some women experience:

•       Delayed periods after weight loss.
•       Temporary irregular periods.
•       Changes in bleeding patterns.
•       More regular cycles.
•       Improved ovulation.

For women living with PCOS and irregular periods, these changes are often a sign that the body is adapting to improved metabolic health.

Mounjaro for PCOS: Can It Help with Weight Loss?

In the UK, the Medicines and Healthcare products Regulatory Agency (MHRA) has authorised Mounjaro (tirzepatide) for weight management and weight loss. It works by mimicking naturally occurring hormones that help regulate appetite and blood sugar levels.

Women with PCOS often find weight loss particularly challenging due to insulin resistance. By helping patients feel fuller for longer and reducing food cravings, Mounjaro may support sustainable weight loss when combined with healthy lifestyle changes.

Potential benefits of weight loss in women with PCOS include:

•       Improved insulin resistance.
•       Reduced androgen levels.
•       Better metabolic health.
•       Improved menstrual regularity.
•       Reduced risk of developing type 2 diabetes.

Mounjaro for weight loss in PCOS should always be considered alongside a balanced diet, regular physical activity and professional medical advice.

Can Mounjaro Improve Fertility in Women with PCOS?

PCOS is one of the leading causes of ovulatory infertility. Excess weight and insulin resistance can affect ovulation, making conception more difficult.

Losing weight may help restore more regular ovulation and improve fertility in some women. As a result, some women taking Mounjaro notice that their cycles become more predictable.

However, it is important to remember that Mounjaro is not licensed as a fertility treatment. Its primary purpose is weight management.

Women who are planning a pregnancy should speak to their healthcare professional before starting treatment. Mounjaro is not recommended during pregnancy, and treatment should usually be stopped before trying to conceive.

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Period Changes Reported by Women Taking Mounjaro

Although experiences vary, some women have reported menstrual cycle changes after starting Mounjaro.

These may include:

•       Irregular periods on Mounjaro.
•       Delayed periods.
•       Heavier or lighter bleeding.
•       Changes in PMS symptoms.
•       Improved cycle regularity.
•       Changes in ovulation patterns.

These effects may occur because weight loss and improved insulin sensitivity can influence reproductive hormones. In many cases, changes settle as the body adapts to treatment.

If you experience severe pain, unusually heavy bleeding or persistent changes to your cycle, you should seek medical advice.

Read: Weight Loss Injections vs Tablets: Which Treatment Is Right for You?

Can Weight Loss Improve Fertility in PCOS?

For many women with PCOS, losing weight can have a positive impact on hormone balance and reproductive health. Even modest weight loss may improve insulin resistance, support more regular ovulation and increase the likelihood of conception. Although Mounjaro is not licensed as a fertility treatment, improvements in weight and metabolic health may help restore more predictable menstrual cycles and enhance fertility in some women with PCOS.

Factor	Before Weight Loss	After Weight Loss
Insulin resistance	Higher	Lower
Ovulation	Often irregular or absent	May become more regular
Menstrual cycle	Unpredictable	Improved cycle regularity
Fertility	Reduced due to irregular ovulation	May improve with restored ovulation
Risk of type 2 diabetes	Higher	Lower
Hormone balance	Increased androgen levels	Improved hormonal control
Weight management	Difficult to maintain	Easier to sustain healthy weight
Pregnancy outcomes	Increased risk of complications	May improve overall reproductive health

 

According to the NHS, maintaining a healthy weight can help improve symptoms of polycystic ovary syndrome (PCOS) and support more regular periods and ovulation. Women taking Mounjaro for PCOS may therefore notice improvements in fertility and menstrual regularity as their weight decreases and insulin resistance improves. However, anyone planning a pregnancy should speak to a healthcare professional, as Mounjaro should not be used during pregnancy.

Can Women with PCOS Use Period Delay Tablets?

Yes, many women with PCOS can safely use period delay tablets following a medical assessment.

Period delay tablets containing norethisterone are commonly prescribed to temporarily postpone periods for holidays, weddings, sporting events or other special occasions. However, treatment is not suitable for everyone.

Your healthcare professional will consider factors such as:

•       Your age.
•       Smoking status.
•       History of blood clots.
•       Liver conditions.
•       Migraine history.
•       Pregnancy or breastfeeding.
•       Current medications.
•       Existing hormonal treatments.

A consultation is important to ensure that period delay medication is appropriate for your individual circumstances.

Read: Period Delay for Teens vs Adults: What’s Different and What’s Safe?

Period Delay Tablets from Hollowood Chemists

Always seek professional advice before using period delay tablets. Hollowood Chemists provides a confidential period delay service for women who wish to postpone their periods for holidays, special occasions, or important events. Our service is available across  North West England, including St Helens (Garswood, Heatons, Millfields, Haydock, Bradlegh), Wigan (Moorside, Mesnes, Ince, Blackhorse (Blackrod), Bolton (Market), Trafford (Sale, Village), Northwich (Barnton), Crewe, and Clayton in Staffordshire. 

Following a suitability assessment, eligible patients may be prescribed norethisterone tablets. Our pharmacists provide clear advice on how to take the medication and what to expect during treatment.

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Is It Safe to Take Period Delay Tablets While Using Mounjaro?

Many women ask whether it is safe to use period delay tablets alongside Mounjaro.

Currently, there is no evidence of a direct interaction between tirzepatide (Mounjaro) and norethisterone. For many women, both medicines may be suitable when prescribed appropriately.

However, treatment should always be assessed on an individual basis. Factors such as medical history, blood clot risk, future pregnancy plans and existing health conditions should all be taken into account.

Read: Can You Take Weight Loss Medication and Period Delay Tablets Together? A UK Medical Guide

Mounjaro slows stomach emptying, which may affect how some oral medicines are absorbed. Women taking oral contraception should discuss this with their healthcare professional, as additional precautions may be recommended after starting treatment or increasing the dose.

Tracking Your Menstrual Cycle While Taking Mounjaro

Monitoring your menstrual cycle can help you recognise changes and provide useful information for discussions with your healthcare professional.

It can be helpful to record:

•       Cycle length.
•       Bleeding patterns.
•       PMS symptoms.
•       Pelvic pain or cramping.
•       Mood changes.
•       Energy levels.

You should seek medical advice if you experience:

•       Very heavy bleeding.
•       Severe abdominal pain.
•       Bleeding between periods.
•       Persistent irregular periods.
•       Missed periods with a possibility of pregnancy.
•       Symptoms that are causing concern.

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When Should You Speak to a Healthcare Professional?

While many menstrual changes are temporary, certain symptoms should always be assessed by a healthcare professional.

You should seek advice if you experience:

•       Sudden or severe abdominal pain.
•       Persistent vomiting.
•       Heavy or prolonged bleeding.
•       Significant changes to your menstrual cycle.
•       Symptoms of pregnancy.
•       Symptoms affecting your quality of life.

Women with PCOS who are planning a pregnancy or receiving fertility treatment should also discuss their options with a qualified healthcare professional.

Read: Period Delay for Teens vs Adults: What’s Different and What’s Safe?

How to Get Mounjaro for PCOS in the UK

Mounjaro is available through private weight management services like Hollowood Chemists and selected NHS pathways for eligible patients. Before treatment is prescribed, healthcare professionals will assess your medical history, weight, BMI and suitability.

Private services can provide convenient access to treatment and ongoing support.

Patients considering Mounjaro should always use regulated providers and avoid unlicensed medicines purchased from unreliable sources.

Private Weight Loss Injection Services at Hollowood Chemists

At Hollowood Chemists, we offer professional and patient-focused weight management services designed to support long-term health.

Following a consultation, eligible patients may receive access to prescription weight loss injections, including:

•       Mounjaro.
•       Wegovy.

Our service includes:

•       Personalised Mounjaro consultations.
•       BMI and eligibility assessments.
•       Ongoing treatment reviews.
•       Dose adjustments where appropriate.
•       Expert advice from qualified pharmacists.
•       Support healthy lifestyle changes.

Medication weight loss service