On this page Medicspot’s clinical weight loss experts answer the most common questions about GLP-1 receptor agonists like Mounjaro and Wegovy: how they work, who they’re for, how to use them safely, and what to expect along the way.
Definitive Guide
GLP-1 FAQ Hub
Clinical weight loss experts
MHRA and NICE approved medications
Coaching and support included
Written by
Medicspot Staff Author
Author
Reviewed by
Dr Abby Hyams
Doctor
Last Updated: Nov 13, 2025
Next Review: Nov 13, 2026
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Overview
GLP-1 receptor agonists such as semaglutide (Wegovy, Ozempic, Rybelsus), liraglutide (Saxenda), and tirzepatide (Mounjaro) mimic a natural gut hormone that controls appetite and blood sugar.
They are used under clinical supervision to support meaningful, sustained weight loss and improve overall metabolic health.
Below you’ll find answers backed by clinical evidence and current UK guidance (NICE NG248 and TA875).
Understanding GLP-1 Medications
Eligibility and Safety
Using GLP-1 Injections or Tablets
Expected Results
Common Side Effects
Lifestyle and Support
Broader Health Effects
Cost and Access
Long-Term Outlook
About the Reviewer
Dr Abby Hyams completed her medical training in Bristol and has been a GP for 19 years, spending many of those as a partner in an NHS practice in Hemel Hempstead. She has a particular passion for supporting patients with weight loss and promoting positive behaviour change, helping individuals build sustainable habits that improve their long-term health and wellbeing.
Sources and References
- NICE NG248 (2023); NICE TA875 (2023)
- Wilding JPH et al. NEJM 2021 (STEP 1)
- Jastreboff AM et al. NEJM 2022 (SURMOUNT-1)
- Marso SP et al. NEJM 2016 (SUSTAIN-6; LEADER)
- EMA EPARs for Wegovy, Saxenda, Mounjaro, Rybelsus
Disclaimer
This article is for general information only and should not be used for the diagnosis or treatment of medical conditions. Medic Spot Limited has used all reasonable care in compiling the information but makes no warranty as to its accuracy. Consult a doctor or other healthcare professional for diagnosis and treatment of medical conditions. In the event of an emergency, please call 999 for immediate assistance.
There is no guarantee of a specific weight loss medication being prescribed. Clinicians will review your online questionnaire alongside other independently validated medical information about you and will recommend the most appropriate weight loss treatments for you based on your answers. In some cases, the clinicians may contact you for additional information. See Terms of Service for more information.
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