WEIGHT LOSS
What Are GLP-1 Medicines for Weight Loss?
How GLP-1 medicines work, why proper prescribing matters, and why a medical consultation is the right starting point.
GLP-1 medicines are now widely discussed in relation to weight loss, but many patients still receive fragmented information. GLP-1 stands for glucagon-like peptide-1. In simple terms, medicines acting on this pathway can help patients feel fuller sooner, feel less preoccupied by appetite, and reduce the drive to eat in the way they did previously. That does not mean they work in isolation. They still need to be used in the context of medical review, dietary change, and ongoing monitoring.
The most commonly prescribed GLP-1 medicines in private practice include semaglutide (marketed as Wegovy for weight management) and tirzepatide (marketed as Mounjaro), which acts on both GLP-1 and GIP pathways. Both are injectable medicines administered weekly, and both require proper clinical assessment before prescribing.
ON THIS PAGE
How GLP-1 medicines help with weight loss
GLP-1 medicines work primarily by mimicking a natural hormone that regulates appetite and satiety. They slow gastric emptying, reduce hunger signalling in the brain, and help patients feel satisfied sooner and for longer after eating. For many patients, this translates into a sustained reduction in calorie intake without the constant preoccupation with food that characterises most diet-based approaches. The effect is physiological, not motivational — it changes the appetite drive itself rather than relying on willpower alone.
Clinical trials of semaglutide and tirzepatide have shown significant mean weight loss in appropriate patients. However, individual response varies. Some patients respond well. Others respond modestly. Some do not tolerate the medication. This is one reason proper medical oversight matters — it allows the treatment plan to be adjusted based on actual response rather than assumptions.
Suitability
Who may be suitable
GLP-1 medicines are generally considered for adults with a BMI of 30 or above, or a BMI of 27 or above with at least one weight-related health condition such as type 2 diabetes, hypertension, or obstructive sleep apnoea. They are not appropriate for everyone. Patients who are pregnant or planning pregnancy, who have a history of pancreatitis or certain thyroid conditions, or who have contraindications to the specific medicine should not be prescribed without careful review. Suitability should always be assessed through a proper weight loss consultation rather than assumed from BMI alone.
Same-day appointments available. Book online or call 020 7736 7557.
Safety
Why medical oversight matters for GLP-1 prescribing
GLP-1 medicines are not supplements. They are prescription medications that require baseline assessment, dose titration, side-effect monitoring, and structured follow-up. At Basuto, the process includes a medical review before prescribing, baseline blood tests where appropriate, discussion of realistic expectations and side effects, and ongoing monitoring of response, tolerance, and wider health markers. Patients who buy GLP-1 medicines online without clinical oversight miss all of these steps — and that matters, because untreated side effects, inappropriate dosing, and failure to screen for contraindications can lead to avoidable problems.
Common questions
How do GLP-1 medicines actually work for weight loss?
They mimic a natural hormone that regulates appetite and satiety. They slow gastric emptying, reduce hunger signalling, and help patients feel satisfied sooner and for longer after eating. The effect is physiological rather than motivational — it changes appetite drive itself rather than relying on willpower alone.
Do they replace dietary and lifestyle change?
No. They make dietary change easier to sustain, but lifestyle factors — nutrition, activity, sleep, alcohol — still affect outcomes meaningfully. GLP-1 medicines are a component of treatment, not a shortcut that removes everything else.
Why does medical oversight matter more than the prescription itself?
The difference between responsible prescribing and a transactional online service is what happens after the prescription is issued: baseline assessment, titration, side-effect monitoring, dose adjustment, and ongoing review of response and safety. Buying GLP-1 medicines online without this framework misses every step that reduces risk and improves outcomes.
FURTHER READING