Online Doctor Weight Loss Services in the UK Explained

An online doctor weight loss service is a private service in which a registered prescriber assesses you remotely and, if treatment is appropriate, issues a prescription for a weight-loss medicine such as Mounjaro (tirzepatide) or Wegovy (semaglutide), which a registered pharmacy then dispenses and delivers. The prescriber may be a doctor, or a pharmacist or nurse with an independent prescribing qualification. These services are regulated in the UK, and since February 2025 the General Pharmaceutical Council (GPhC) has said that prescribing weight-loss medicines should not rely on an online questionnaire alone. This guide explains how online doctor services work, who regulates them, and their strengths and limitations. It sits within our provider guides, part of our wider GLP-1 guides.

What "online doctor" means in practice

The term "online doctor" is used loosely. In weight management, it can describe several different set-ups:

Despite the name, the person who prescribes is not always a doctor. Pharmacist independent prescribers and nurse independent prescribers are qualified to prescribe within their competence, and many online weight loss services use them. What matters is that the prescriber is registered, competent in weight management, and follows professional standards.

How the process usually works

1. Online questionnaire

You complete a detailed questionnaire covering your height and weight, weight-related conditions, medical history, medicines, allergies, pregnancy and contraception, and screening questions about pancreatitis, gallbladder disease, eating disorders and other cautions. Our guide to the online weight loss consultation explains each question.

2. Identity and weight verification

The service checks who you are and verifies your weight. GPhC guidance published in February 2025 says that for higher-risk medicines, including weight-loss medicines, prescribing decisions should not be based solely on an online questionnaire, and weight, height or BMI should be independently verified. Methods include:

• A video consultation with a clinician
• Checking your GP record, or contacting your GP
• Using a weight recorded by a pharmacy or other provider

Photos alone, or a phone call alone, are not considered adequate. See our guide to why online pharmacies verify your ID and weight.

3. Prescriber review

A registered prescriber reviews all the information and decides whether treatment is appropriate. They may ask questions, request further information, or decline. If they approve treatment, they choose a medicine and starting dose in line with the licence and your history.

4. Dispensing and delivery

A registered pharmacy dispenses the medicine and posts it in temperature-controlled packaging. A pharmacist checks the prescription before it is supplied.

5. Ongoing reviews

You are reviewed before dose increases and at intervals during treatment. The prescriber considers your weight change, side effects, any new conditions or medicines, and whether to continue, adjust or stop.

What a good video consultation looks like

Video consultations have become much more common since the GPhC's 2025 guidance. If your service uses one, it helps to know what a thorough appointment usually involves, so you can get the most from it.

Before the call

You may be asked to have your scales ready, wear light clothing, find a private, well-lit space and have your photo ID and a list of your medicines to hand. Some services ask you to complete the questionnaire first, so the clinician can focus the call on anything that needs clarifying.

During the call

A clinician will usually:

• Confirm your identity against the ID you have provided
• Watch you weigh yourself, or otherwise verify your weight, and check your height
• Go through your answers, asking follow-up questions where something is unclear, for example about a past episode of abdominal pain, a gallbladder problem or a change in mood
• Ask about pregnancy plans and contraception if relevant
• Discuss what treatment involves, including the starting dose, how doses are increased, common side effects and when to seek help
• Explain what happens next and how to get in touch

A good consultation is a conversation, not just a check-box exercise. You should feel able to ask questions, for example about how the medicine works, how long treatment might last, and what happens if you stop.

After the call

The prescriber makes a decision, which may take some time if they need information from your GP. If treatment is approved, you should receive written information about your medicine, dosing and safety, as well as the patient information leaflet supplied with the pen.

How online services handle side effects and dose changes

Most of the practical work of GLP-1 treatment happens after the first prescription. Mounjaro and Wegovy are started at a low dose and increased gradually, usually at intervals of at least four weeks, to help your body adjust. Common side effects such as nausea, constipation, diarrhoea and indigestion tend to be most noticeable when starting or increasing the dose.

A well-run online service will usually:

• Check in before each dose increase. You report your weight, any side effects and changes in your health. The prescriber decides whether to increase, stay at the current dose, or occasionally reduce it.
• Allow you to stay on a dose. Not everyone needs, or tolerates, the highest dose. Staying on a lower dose that works for you is a legitimate option.
• Offer advice on managing side effects. This might include eating smaller meals, avoiding very fatty foods, staying hydrated and managing constipation. Our guides to nausea on GLP-1 medicines and constipation on GLP-1 medicines cover this.
• Know when to escalate. If you describe red-flag symptoms, such as severe abdominal pain, a good service will tell you to seek urgent care rather than trying to manage it remotely.
• Handle missed doses safely. The SmPCs set specific rules: a missed Mounjaro dose can be taken within four days, and a missed Wegovy dose within five days. Outside these windows, the dose is skipped. After longer gaps, the prescriber may restart you at a lower dose.

Online services and people with type 2 diabetes

Many people who use online weight loss services have type 2 diabetes, or are at risk of it. GLP-1 medicines can be very effective in this group, but there are extra considerations:

• Low blood sugar risk. On their own, GLP-1 medicines rarely cause hypoglycaemia, but the risk rises if you also take insulin or a sulfonylurea such as gliclazide. Your diabetes medicines may need adjusting, which usually involves your GP or diabetes team.
• Diabetic eye disease. Both SmPCs warn that rapid improvement in blood sugar can temporarily worsen diabetic retinopathy, so eye screening is important.
• Duplicate medicines. Some people with diabetes are already prescribed a GLP-1 medicine, such as Ozempic, Rybelsus or Trulicity. Two GLP-1 medicines should not be taken together.

Because of this, an online service may insist on contacting your GP, or may suggest that your diabetes team manages treatment. See our guide to GLP-1 medicines and type 2 diabetes.

Who regulates online doctor services?

Several regulators are involved, and each covers a different part of the service. Our guide to GPhC, CQC and MHRA: who regulates online weight loss services explains this in depth, but in summary:

How to check an online doctor service

• Find the clinical service's company name and registration details on its website.
• Search the CQC website (in England) or the equivalent regulator for the service, and read any inspection report.
• Check named doctors on the GMC register, pharmacist prescribers on the GPhC register, and nurse prescribers on the NMC register.
• Check the dispensing pharmacy on the GPhC register (or PSNI register in Northern Ireland).

Searching the registers yourself, rather than relying on logos or links on the provider's website, gives you the most reliable picture.

The medicines online doctors may prescribe

Online services prescribe licensed medicines in line with their UK marketing authorisation. At the time of writing, these include:

• Mounjaro (tirzepatide): once-weekly injection, licensed for weight management in adults with a BMI of 30 or more, or 27 to under 30 with a weight-related condition. In the SURMOUNT-1 trial, the highest dose (15mg) produced average weight loss of around 21% over 72 weeks. See our Mounjaro hub.
• Wegovy (semaglutide): once-weekly injection with the same BMI criteria. In STEP 1, average weight loss was around 15% over 68 weeks. The MHRA approved a higher maximum dose of up to 7.2mg in January 2026 for adults with obesity (BMI 30 or more). See our Wegovy hub.
• Wegovy tablets (oral semaglutide): a daily tablet approved by the MHRA for weight management in June 2026.
• Foundayo (orforglipron): a daily small-molecule tablet approved by the MHRA in August 2026.
• Saxenda and generic liraglutide: a daily injection, now used less often.
• Orlistat: a non-GLP-1 tablet that reduces fat absorption.

Licensing and availability can change, so check the current SmPC on medicines.org.uk. Our guide to the oral GLP-1 options covers the tablets, and our weight loss injections hub covers the injections.

Strengths of online doctor services

Convenience and access

You can complete the assessment at a time that suits you, without travelling. This can help people who work irregular hours, have caring responsibilities or live far from a clinic.

Speed

Online services can often assess people more quickly than NHS weight management services, where waiting lists can be long and access to GLP-1 medicines is limited. NHS tirzepatide is being introduced in phases in England, beginning with people with the highest clinical need. See our guide to private vs NHS weight loss treatment.

Discretion

Some people feel more comfortable discussing weight from home.

Structured follow-up

Many services build in reminders, reviews and messaging with clinicians.

Limitations to be aware of

No physical examination

A remote clinician cannot listen to your heart, examine your abdomen, check your blood pressure directly or take blood. For most people starting a GLP-1 medicine this is not essential, but for some it is.

Incomplete medical history

Online services do not automatically have your NHS record. They rely on what you tell them, plus whatever they can verify. This is why GP information sharing matters.

Not ideal for complex needs

People with several long-term conditions, multiple medicines, type 2 diabetes on insulin or sulfonylureas, a history of eating disorders, or significant mental health concerns may be better served by face-to-face care, or by an online service working closely with their GP.

Continuity

You may see different clinicians at each review. Some people prefer an ongoing relationship with one clinician.

Cost

Private treatment is self-funded. Costs vary with the medicine, dose and what is included, and they can change over time. Lilly's September 2025 increase to the UK list price of Mounjaro is one example. We don't quote prices in our guides; see our prices page for current comparisons, and our guide to the long-term cost of GLP-1 treatment.

Online doctor vs your NHS GP

The two are not mutually exclusive. Many people are treated by an online service while their GP stays informed and continues to manage their other health needs.

Questions to ask an online doctor service

• Who will prescribe, and what is their registration?
• Is your clinical service registered with the CQC (or equivalent)?
• Which registered pharmacy will dispense my medicine?
• How do you verify identity and weight?
• Will you contact my GP?
• How do I contact a clinician if I have side effects or questions?
• How often will I be reviewed?
• What happens if the treatment isn't working, or I want to stop?
• What is included in the cost, and how are price changes communicated?

Our guide to how to choose an online pharmacy for weight loss treatment has a full checklist, and our providers page explains how we compare regulated services.

Warning signs

Be cautious of any service that:

• Doesn't name its prescribers or pharmacy
• Can't be found on the regulators' registers
• Offers to prescribe without verification
• Lets you choose your own dose
• Uses urgency, discounts or before-and-after images to promote weight-loss medicines
• Offers unlicensed products, such as retatrutide, or "compounded" or "research" versions

Our guide to fake and unlicensed weight loss jabs explains these risks.

Information sharing with your GP: practical points

Sharing information with your GP is one of the most important safety features of online treatment, but it raises practical questions.

• What is shared? Usually the name and dose of the medicine prescribed, the date treatment started, and sometimes relevant findings from your assessment.
• Can my GP refuse to be involved? Your GP is not obliged to co-manage private treatment, but they should record the information on your notes. Some GPs may want to discuss the treatment with you.
• What if I don't want my GP told? You can discuss your reasons with the online service. However, many services will not prescribe without consent, and keeping your GP informed is safer, particularly if you need surgery, sedation or new medicines later. The MHRA has highlighted the risk of pulmonary aspiration during general anaesthesia or deep sedation in people taking GLP-1 medicines, so anaesthetists need to know.
• What about NHS records generally? Private prescriptions do not automatically appear on your NHS record. Telling your GP, or consenting to the service doing so, closes that gap.

Online doctor services and long-term treatment

GLP-1 medicines work while you take them. The STEP 4 trial (semaglutide) and SURMOUNT-4 trial (tirzepatide) both found that people who stopped treatment regained a substantial proportion of the weight they had lost, compared with those who continued. That means choosing a service is not just about starting treatment, but about having support over months or years, including advice on stopping or maintenance. See our guides to long-term GLP-1 use and weight regain after stopping.

When to speak to a professional

Speak to your GP or a pharmacist before using an online doctor service if you have other long-term conditions, take regular medicines, have diabetes, are planning a pregnancy, or have a history of eating disorders, pancreatitis or gallbladder disease. Prescribing decisions belong to a qualified prescriber, and face-to-face care may be more appropriate for some people.

If you are already taking a GLP-1 medicine prescribed online:

• Call 999 or go to A&E if you have severe, persistent abdominal pain (with or without vomiting, sometimes spreading to your back), signs of a severe allergic reaction such as swelling of the face, lips or throat or difficulty breathing, or you collapse.
• Contact NHS 111 or your GP urgently for persistent vomiting or diarrhoea with signs of dehydration, pain under the right ribs with fever or yellowing of the skin or eyes, or low blood sugar symptoms if you have diabetes.
• Contact your prescriber if you become pregnant, are due to have surgery or sedation, start a new medicine, or notice changes in your mood. If you have thoughts of self-harm, call 999 or Samaritans on 116 123.