Sage

The claim

Sage (Salvia officinalis) — the same herb from your kitchen — is sold as a natural remedy for menopausal hot flushes and night sweats, and for excessive sweating generally.

The folk-medicine logic

This one has a charming internal consistency: sage has been used for centuries as an anti-sweating (antihydrotic) herb, and hot flushes and night sweats are, at heart, sweating problems. So using a traditional anti-perspirant herb for menopausal sweats is a more logical traditional match than most. The kitchen-cupboard familiarity also makes it feel reassuringly safe.

What the evidence actually says

The evidence is limited but not entirely empty. A frequently cited 2011 open-label study found a fresh sage preparation reduced the frequency and intensity of hot flushes over eight weeks. The catch is that it was an open-label study — no placebo control, no blinding — which is a weak design, especially for hot flushes, where the placebo response is famously large (often 30–50%). A handful of small studies have followed, but there's still no large, high-quality placebo-controlled trial to confirm it. So: promising, traditional, plausible — but not proven.

The safety subtlety most people miss

Culinary amounts of sage are perfectly safe. But concentrated sage supplements and especially sage essential oil are a different matter, because sage contains a compound called thujone, which in high doses is neurotoxic and can, in extreme cases, trigger seizures. This is why sage extracts shouldn't be taken in large doses or for prolonged periods, should be avoided in pregnancy and breastfeeding, and why sage essential oil should never be taken internally. The gap between 'herb on your roast chicken' and 'concentrated daily extract' genuinely matters here.

The other traditional use

Sage is also studied, interestingly, for memory and cognition — there's preliminary evidence it may modestly support memory, a separate strand from the menopause use.

Better-evidenced alternatives

For hot flushes, soy isoflavones (phytoestrogens) or, medically, HRT; for night sweats disrupting sleep, magnesium may help sleep quality alongside.

Bottom line

Sage is a traditional, plausible option for menopausal hot flushes and night sweats with limited, low-quality supporting evidence — worth knowing about, not proven. Keep to sensible doses (the thujone issue is real), avoid concentrated oil internally and in pregnancy, and consider better-evidenced options first. Use thoughtfully.