You’ve tried the early bedtime. You’ve put the phone down. You’ve done the meditation. And you’re still lying there at 3am, or waking at 5am unable to go back, or finally falling into something that passes for sleep only to wake up exhausted.
Here’s something worth knowing: when sleep goes wrong during perimenopause and menopause, willpower and good intentions only go so far. Because the problem isn’t simply your habits, it’s your chemistry. And sometimes your chemistry needs a little support while it finds its new normal.
This week we’re talking about two things: the supplements with the strongest evidence for sleep in this life stage, and the wind-down routine that makes everything else actually work. Because a supplement taken in the wrong context, at the wrong time, is a fraction as effective as one taken as part of a deliberate evening ritual.
Magnesium
If there is one supplement I would want every woman in perimenopause to know about, it is magnesium, specifically magnesium glycinate or bisglycinate.
As estrogen declines, intracellular magnesium levels fall alongside it. Magnesium is involved in over 300 processes in the body, including GABA signalling (your brain’s main calming neurotransmitter), melatonin regulation, muscle relaxation, blood sugar stability, and the ability of your nervous system to actually switch off at night.
When magnesium is low, the system that is supposed to calm your brain and body for sleep becomes less efficient. That tired-but-wired feeling, exhausted but unable to land, is often a magnesium story.
The largest placebo-controlled trial to date on magnesium bisglycinate, published in 2025, enrolled 155 adults with poor sleep and found that 250mg of elemental magnesium daily produced a significantly greater reduction in insomnia severity scores compared to placebo within four weeks.
The glycinate or bisglycinate form is worth choosing specifically, it is gentler on the gut than citrate or oxide, and the glycine it is bound to has its own calming, GABA-related effects, meaning the compound does double duty. Current evidence supports 200–400mg of elemental magnesium taken 30–60 minutes before bed.
Most women notice reduced nighttime waking within two to three weeks, with deeper benefits building over the following month. Always check with your healthcare provider first, particularly if you have kidney concerns or are on medication.
Ashwagandha
Ashwagandha is an adaptogen, a plant compound that helps your body regulate its stress response rather than simply suppressing it. Because disrupted sleep during menopause is so often driven by cortisol spiking at the wrong time of night, this is where ashwagandha earns its place.
A randomised, double-blind, placebo-controlled trial in women aged 45–55 taking ashwagandha root extract for 56 days found significant improvements in menopausal symptoms including sleep disruption compared with placebo. A separate 12-week RCT specifically in postmenopausal women taking 600mg daily found significantly greater improvements in sleep quality, menopausal symptoms, and body composition compared with placebo, with an excellent safety profile.
Benefits are more pronounced after at least eight weeks of consistent use. This is not a quick fix, it works gradually by helping bring your cortisol rhythm back into alignment. But for women whose sleep disruption is driven by that early-morning cortisol spike, it is one of the most well-evidenced natural tools available.
And L-theanine — worth knowing about
If your sleep issue is specifically about getting to sleep, racing thoughts, inability to switch off, L-theanine is worth considering. It is an amino acid found in green tea that promotes calm alertness without drowsiness. A 2025 systematic review and meta-analysis of 19 randomised controlled trials in 897 participants found that L-theanine significantly improved subjective sleep onset latency, daytime dysfunction, and overall sleep quality scores. At 200–400mg taken in the evening, it works gently, often noticeably within the same night.
It is not sedating. It does not knock you out. It simply turns down the mental noise that is keeping you awake.
Now — the wind-down routine that makes all of this work
Supplements taken while your nervous system is still in fight-or-flight mode will always underperform. The ritual matters as much as what you take.
60 minutes before bed: dim everything. Overhead lights off, lamps on. This signals to your melatonin system that the day is ending. During perimenopause, when melatonin production is already declining, this matters more than ever.
Take your magnesium now. 30–60 minutes before you want to be asleep.
No screens. Not “try to reduce screens.” No screens. Blue light suppresses melatonin. Read a physical book, listen to a podcast or music, or sit with a herbal tea.
Something warm. A warm bath or shower an hour before bed works physiologically, it raises your skin temperature and then allows it to drop, mimicking the natural temperature fall your body needs to move into deep sleep.
Herbal tea. Passionflower, valerian, lemon balm, or chamomile. Not because they are miracle cures, but because the act of making and drinking something warm and intentional signals to your nervous system that the day is done.
Write it down. Spend five minutes before bed writing everything that is unfinished or worrying you. Getting it out of your head and onto paper reduces the mental load that keeps your nervous system alert when it should be resting.
Keep it consistent. The same routine, at roughly the same time, every night, even weekends. Your circadian rhythm runs on consistency, and every time you stay up two hours later on a Saturday, you pay for it through the following week.
Sleep is not a luxury during this transition. Every symptom you are managing, brain fog, mood, weight, energy, is made worse by poor sleep and better by good sleep. You deserve rest. And the right support, taken in the right context, can make a real difference.
Inside the paid membership this month you can join the Inner Circle, where we go deeper but also I will be sharing exact dosing protocols, how to stack these safely, what to do when nothing is working, and a sleep tracking tool to identify your specific pattern. Join us for €9/month or €72/year.
Feeling like you need more personalised support?
I offer 1:1 sessions where we dig into your specific symptoms, history, and what your body actually needs.
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