Hot flushes affect between 70 and 80 per cent of women going through perimenopause and menopause in the UK, making them the most common and most recognised symptom of this transition. The good news is that 2026 is the best time in history to be seeking treatment.
What are hot flushes and why do they happen?
A hot flush is a sudden sensation of intense heat, typically spreading from the chest upwards through the neck and face. As oestrogen levels fall, KNDy neurons in the hypothalamus become overactive. These neurons produce neurokinin B, which narrows the thermoneutral zone, causing the body to trigger a disproportionate heat-dissipation response. Research consistently shows that hot flushes last a median of seven to nine years.
| Option | Best for | Access route |
|---|---|---|
| HRT | Most suitable women with moderate to severe symptoms | GP, menopause clinic or online clinic |
| Fezolinetant | Women where HRT is unsuitable | NHS in England where eligible, or private specialist |
| CBT | Symptom coping, anxiety and sleep disruption | NHS Talking Therapies or private therapist |
| Venlafaxine or gabapentin | Selected women who cannot use HRT | GP or specialist prescription |
| Lifestyle measures | Mild symptoms and trigger reduction | Self-directed or with specialist support |
Lifestyle and environmental measures
Identifying and avoiding triggers such as alcohol, caffeine, spicy food, hot drinks, warm environments, and stress can make a meaningful difference. Paced breathing, weight management, stopping smoking, and regular exercise all have evidence behind them. Dressing in layers and keeping the bedroom cool are practical measures.
HRT: the most effective treatment
HRT reduces hot flush frequency and severity by 80 to 90 per cent in most women, significantly more effective than any other treatment. Transdermal oestrogen combined with micronised progesterone is the recommended first choice. HRT typically begins to reduce hot flushes within two to four weeks.
The 2026 breakthrough: fezolinetant and elinzanetant on the NHS
NICE published final guidance in March 2026 recommending fezolinetant for NHS prescribing for moderate to severe hot flushes when HRT is not suitable. Around 500,000 women are estimated to be eligible. Elinzanetant was authorised by the MHRA in 2025 for moderate to severe vasomotor symptoms associated with menopause, with prescribing pathways still developing in the UK.
Other prescription non-hormonal options
Venlafaxine (SNRI) reduces hot flush frequency by around 50 to 60 per cent and is the preferred choice for women with breast cancer taking tamoxifen. Gabapentin can be effective particularly for night sweats. Clonidine is the only medication specifically licensed in the UK for vasomotor symptoms.
When to seek professional help
See your GP if hot flushes are affecting your sleep, work, or daily functioning, or if lifestyle measures have not provided adequate relief after two to three months. Seek urgent attention for chest pain accompanying palpitations or hot flushes in the context of unexplained weight loss.
For related guidance, see HRT in the UK, HRT alternatives, and menopause counselling and CBT support.
Frequently Asked Questions
What is the most effective treatment for hot flushes?
HRT is significantly the most effective treatment, reducing frequency and severity by 80 to 90 per cent. For women who cannot take HRT, fezolinetant, recommended by NICE for NHS use in England where HRT is unsuitable, has been shown to reduce hot flush frequency by around 60 per cent.
Is fezolinetant available on the NHS in the UK?
Yes. NICE published final guidance in March 2026 recommending fezolinetant for NHS prescribing for moderate to severe hot flushes in women for whom HRT is not suitable.
How long do hot flushes last during menopause?
Research shows the median duration of hot flushes is seven to nine years. They are most frequent and severe during perimenopause and in the year after the last period, then typically reduce over time.
What triggers hot flushes?
Common triggers include alcohol, caffeine, spicy food, hot drinks, warm environments, synthetic fabrics, stress, and emotional arousal. Triggers vary between women.
Can lifestyle changes stop hot flushes?
Lifestyle changes can reduce frequency and severity, particularly for mild symptoms, but are unlikely to stop them entirely for most women with moderate to severe symptoms. Medical treatment alongside lifestyle measures gives the best results.
Does HRT stop hot flushes completely?
For most women, HRT reduces hot flushes significantly, typically by 80 to 90 per cent. Some women find they stop almost entirely. Dose and formulation adjustments can improve the response.
Can I get treatment for hot flushes if I cannot take HRT?
Yes. Fezolinetant, recommended by NICE for NHS use in England where HRT is unsuitable, provides meaningful relief for moderate to severe hot flushes. SSRIs and SNRIs, CBT, and phytoestrogens are also evidence-based options.
When should I see a doctor about hot flushes?
See your GP if hot flushes are affecting your sleep, work, or daily functioning, or if lifestyle measures have not provided adequate relief after two to three months.
Where to get support next
If symptoms are affecting your sleep, work, relationships or day-to-day wellbeing, it is sensible to speak with your GP, pharmacist or a qualified menopause clinician. The Menopause Directory can also help you compare menopause symptoms hub Ask MenoAI.
This guide is general information only and is not a diagnosis or personalised medical advice. Seek urgent medical help if symptoms feel severe, sudden or worrying.
Useful UK references: NHS menopause information, NICE menopause guideline NG23 and British Menopause Society publications.
Author: The Menopause Directory
About this guide
This guide is published by The Menopause Directory editorial team to help UK readers understand menopause symptoms, support options and services. It is for general information only and should not replace advice from a GP, pharmacist or qualified menopause specialist.
Last reviewed by The Menopause Directory editorial team.