Hot Flashes, Night Sweats & Menopausal Symptoms
Hot flashes and night sweats are caused by sudden oestrogen drops from surgical menopause, hormonal therapies (tamoxifen, aromatase inhibitors), or chemotherapy-induced ovarian suppression. In men, androgen deprivation therapy for prostate cancer causes the same phenomenon. These disrupt sleep, quality of life, and adherence to treatment.
Herbs & Supplements — Safety Information
Herbal information is for educational purposes. Many herbs interact with chemotherapy and other medications — consult your oncologist before use.
When to Seek Medical Help Immediately
- •Night sweats with fever (may indicate infection or lymphoma symptom)
- •Severe episodes affecting ability to sleep for multiple weeks without improvement
- •Episodes accompanied by palpitations and dizziness
3 Natural Remedies
Stellate Ganglion Block (non-herbal)
Best for: Severe hot flashes unresponsive to other measures, especially breast/prostate cancer patients on hormonal therapy
A stellate ganglion block (SGB) — an injection of local anaesthetic near a nerve cluster in the neck — has shown remarkable efficacy for treatment-related hot flashes in both women and men in multiple RCTs. It is considered when other approaches fail. Not a home remedy — mention to your oncologist as an option.
🧪 How to Prepare
Discuss with oncologist and pain specialist. Performed under ultrasound guidance as a day procedure.
⏰ When to Take
When first-line strategies have failed. Effects can last 6 months to years.
Black Cohosh
Best for: Hot flashes in surgical menopause, tamoxifen-related flashes
Black cohosh (Actaea racemosa) is the most studied botanical for menopausal hot flashes. Cochrane reviews show modest but consistent reduction in hot flash frequency and severity. Importantly, it is NOT oestrogenic — its mechanism involves serotonin pathways, making it safer for oestrogen receptor-positive breast cancer patients (though caution is still warranted).
🧪 How to Prepare
Standardised extract (Remifemin or equivalent), 40–80 mg/day. Take with food. Allow 4–8 weeks for full effect.
⏰ When to Take
Once or twice daily with food.
Cooling Strategies & Sleep Hygiene
Best for: Sleep disruption from night sweats, all hormone-related hot flashes
Behavioural and environmental modifications significantly reduce hot flash severity and the sleep disruption they cause. These are the first-line and safest interventions, often surprisingly effective when done consistently.
🧪 How to Prepare
Keep bedroom 16–19°C. Use moisture-wicking, loose, layered natural-fibre sleepwear. Keep a fan and cool damp cloth at bedside. Avoid: spicy food, caffeine, alcohol, and hot drinks 2–3 hours before sleep (known triggers). Cool shower before bed. 'Paced breathing' during a flash: slow deep breaths at 6–8 breaths/min — clinically reduces flash intensity. Mindfulness-based stress reduction also reduces flash frequency.
⏰ When to Take
Nightly as part of sleep routine. Trigger avoidance throughout the day.
Evidence Level Guide