Are your hot flashes from your GLP-1 or perimenopause? Here is what is known, what helps, and how to track night sweats so your doctor can act.
You’re three months into a GLP-1, and suddenly you’re waking up soaked. It’s natural to blame the new medicine. It’s also worth thinking about what else is going on.
A sudden feeling of heat, usually in the face, neck and chest, sometimes with flushing, sweating and a racing heart. It can last from seconds to several minutes. Night sweats are hot flashes during sleep, often bad enough to wake you or soak your sheets.
| Clue | Leans toward |
|---|---|
| You’re in your 40s or 50s with changing periods | Perimenopause |
| Flashes come at any time, regardless of dose day | Perimenopause |
| You feel shaky, sweaty and hungry, and you take insulin or a sulfonylurea | Possibly low blood sugar. Check it and call your prescriber |
| Sweats come with fever or feeling unwell | See a doctor |
Everyday changes that many women find useful:
Treatments to discuss with your doctor:
Keep it simple enough to do half asleep:
After 2–4 weeks you’ll see whether they’re getting better, worse, or linked to anything.
Priya, 48, started Wegovy in spring. By summer she’s waking up drenched three nights a week and blames the shot. Two weeks of logging show the sweats have nothing to do with her dose day, and her periods have become irregular. Her doctor confirms perimenopause and talks through treatment options.
If HRT isn’t right for you, The Menopause Society’s non-hormone guidance covers several prescription options: low-dose SSRIs and SNRIs, gabapentin, and fezolinetant (Veozah), a non-hormonal medicine approved in 2023 specifically for moderate to severe hot flashes. Cognitive behavioural therapy for hot flashes is also rated at their highest evidence level. Your doctor can explain the options and side effects.
Night sweats aren’t a common side effect on the label. If you take other diabetes medicines, low blood sugar at night can cause sweating, so mention it to your prescriber.
There’s no clear evidence that they do. Timing with perimenopause is the more common explanation.
For many women, several years. Treatment can help a lot, so don’t just put up with them.
Alcohol is a common hot flash trigger for many women. Many people also find alcohol affects them more on a GLP-1.
A quick daily tap (none, 1–3, 4+) is enough. Patterns show up within a few weeks.