Is it safe to take weight loss injections?

Are weight loss injections safe? For many adults, yes, when they are licensed, prescribed after a proper check and followed up. This article covers who they suit, who should avoid them and what monitoring looks like for patients in Milton Keynes.

Are weight loss injections safe?

Licensed weight loss injections such as Mounjaro and Wegovy are generally safe for suitable adults when a clinician checks your health first and reviews you regularly.

Both are MHRA-licensed, which means the UK regulator has assessed them for quality, safety and effectiveness. Both are prescription-only medicines.

They are not safe for everyone. Side effects are common, and a small number are serious.

Safety also depends on where the medicine comes from. Unlicensed products and pens bought online without a proper health check carry real risk.

What are the common side effects?

Most people get some gut symptoms, especially early on. The usual ones are:

• Nausea

• Constipation

• Diarrhoea

• Reflux and burping

• Tiredness

• Headache

These tend to be worst in the days after a dose increase. They often settle as your body adjusts.

Both medicines are started on a low dose and raised in steps. This is deliberate, to let your gut adjust.

Eating smaller, simpler meals often helps. If symptoms are severe or do not settle, tell your pharmacist before the next dose.

Which side effects need urgent help?

Contact a clinician straight away if you have:

• Severe, persistent stomach pain, sometimes spreading to the back

• Repeated vomiting that stops you keeping fluids down

• Signs of an allergic reaction, such as swelling of the face or throat

• Sudden changes in your vision

Severe stomach pain can be a sign of pancreatitis, which is inflammation of the pancreas, a gland behind the stomach. Out of hours, call 111. In an emergency, call 999.

You can also report suspected side effects through the MHRA Yellow Card scheme.

Who should not take weight loss injections?

Treatment is not suitable for some people. Your pharmacist will go through this with you.

Not suitable if you:

• Are pregnant, breastfeeding or trying to conceive

• Have had pancreatitis

• Have an active eating disorder

• Have a personal or family history of medullary thyroid cancer, or a condition called MEN 2

Extra care is needed if you have:

• Gallbladder disease

• Severe stomach or bowel problems

• Diabetes treated with insulin or a sulfonylurea, as the diabetes treatment may need adjusting

If you take the contraceptive pill, tell the pharmacist. Mounjaro can affect how well it is absorbed, so extra precautions are advised when you start and after each dose increase.

If you are pregnant, planning a pregnancy or managing a long-term condition, get personalised advice before starting.

What does the pharmacist check before prescribing?

The check is what makes treatment safer. It is a conversation, not a form.

The pharmacist will ask about:

• Your medical history and any family history of thyroid cancer

• Everything you take, including over-the-counter products

• Your weight history and what you have already tried

• Eating patterns, including any history of disordered eating

Height and weight are measured on the day. Treatment is usually considered with a BMI of 30 or above, or 27 or above with a weight-related condition such as high blood pressure, type 2 diabetes or sleep apnoea.

The initial consultation takes around 15 to 20 minutes. If treatment is not suitable, you are told why.

Why do monthly reviews matter?

Dose increases are where side effects usually flare. A review lets someone decide whether to hold your dose or step up.

At each monthly review, the pharmacist will:

• Check your weight and how you are tolerating treatment

• Ask about side effects

• Decide whether to stay on the same dose or increase it

• Answer questions about eating and activity

Reviews at the pharmacy are face to face. That means a real person who knows your history, and who can spot problems early.

What are the risks of buying injections online?

Pens sold without a proper health check, or from unregulated sellers, may be counterfeit, wrongly dosed or unlicensed. Nobody is checking whether the medicine suits you.

A licensed supply, a full health check and follow-up are the safe route. That applies whether you go through a private pharmacy or your GP.

Does the NHS offer weight loss injections?

Your GP may be able to refer you to an NHS weight management service. Access to medicines such as Mounjaro on the NHS is limited and depends on strict criteria and local availability.

Some people choose to pay privately to be seen sooner and to book reviews at times that suit them. Your GP is a sensible first call if you have other health conditions.

Common questions

Do weight loss injections work without changing how I eat?

They work best alongside a reduced-calorie diet and more activity. The medicine reduces appetite, but it does not replace those changes.

What happens when I stop?

Weight regain is common after stopping if eating and activity habits have not changed. Talk to your pharmacist about a plan before you stop.

Does it hurt to inject?

The pens use a fine needle and most people find it easy. You are shown how to inject, and usually do the first one in the room with guidance.

Are the injections safe long term?

They are intended for ongoing use under review. Your pharmacist will keep checking whether treatment is still right for you.

How much does it cost?

Wegovy starts at £129 for the first four weeks, and the price changes with dose strength. The pharmacist will confirm the full cost before you commit.

Do I need a GP referral?

No. You can book directly with the pharmacy. Your free eligibility consultation will tell you whether treatment is suitable.

Kenmakos Medical is a private pharmacy in Bletchley, Milton Keynes. Your eligibility consultation is with a GPhC-registered pharmacist, and appointments are often available the same day or within a few days.