PMS anxiety treatment: what helps before your period

The strongest evidence for premenstrual anxiety points to SSRIs.

• Fluoxetine reduced tension, irritability and dysphoria significantly more than placebo (p<0.001) in a trial of 313 women [2].
• Paroxetine outperformed both placebo and another antidepressant in a smaller trial [4].
• Cognitive behavioral therapy (CBT) is recommended alongside medication by major guidelines, since it gives you a way to work with anxious thoughts as they come up, not just in the week before your period.

Here's how the main options stack up:

No single option works for everyone. Some women combine two, an SSRI with CBT, say, based on what fits their pattern.

Some over-the-counter options have real, if modest, evidence behind them, even though none match SSRIs for strength.

• Vitex agnus-castus (chasteberry): a 2017 systematic review pooled 17 randomized trials and found a consistent benefit for premenstrual syndrome symptoms overall, including mood [3].
• Chamomile: a smaller review of 8 trials found it helped with PMS symptoms, but the trials were short and the evidence is weaker than for Vitex [8].

Neither has been tested specifically for anxiety as its own symptom, so expect a general easing of premenstrual symptoms rather than a targeted anxiety treatment. Side effects are usually mild, stomach upset or headache, but check with a pharmacist before combining herbal supplements with antidepressants or birth control, since interactions are possible.

Beyond supplements, auriculotherapy, a form of ear acupuncture using small needles or pressure points, showed a benefit for anxiety and overall PMS symptoms in a Brazilian randomized trial. The placebo group, who had needles placed in unrelated points, also improved, so some of the effect may come from the weekly attention and ritual of eight sessions rather than the specific points used [1].

Other commonly suggested options, magnesium, exercise, cutting caffeine, aren't covered by the trials behind this page, so we can't rank them here. They're reasonable to try alongside something with stronger evidence, not instead of it. For the fuller picture, see PMS treatment: what actually helps.

What's consistent across the evidence is that premenstrual anxiety comes from a real shift in brain chemistry. Estrogen and progesterone drop in the days before your period, and some brains respond to that drop with more anxiety than others.

If anxiety is the main thing keeping you up, that's worth naming to whoever you see next, not folding into hormones alone. For more on why this happens, see anxiety before your period.

Timing depends on how predictable your symptoms are. In one study of 276 women with PMDD, anxiety and tension were among the most common symptoms, but the day symptoms started varied by four or more days from cycle to cycle in 45% of women [6]. That variability is exactly why tracking matters before you settle on a schedule.

1. Track your symptoms daily for one to two cycles using a tool like the DRSP chart to see whether your anxiety is cyclical and when it tends to start.
2. If a clear pattern shows up, a luteal-phase-only SSRI schedule, an option some guidelines support, may fit your pattern better than continuous daily dosing.
3. If your cycles are irregular or your symptom onset shifts by several days, continuous daily dosing may suit you better, since you don't have to predict the exact start day.
4. Herbal options like Vitex are typically taken every day for at least two to three months, since the trials behind them ran continuously rather than cycle by cycle [3].

Whichever schedule you choose, give it at least two full cycles before judging whether it's working.

If anxiety before your period takes up a week of every month, affects your work, relationships or sleep, or you have thoughts of hurting yourself, see a GP or gynecologist and bring two months of daily notes (the DRSP chart works well for this): when the anxiety starts, how intense it feels out of ten, and when it eases after your period begins.

If this pattern looks like it could be PMDD specifically, five or more symptoms including a mood symptom, confined to the week before your period, a PMDD specialist will know the treatment options in more depth than a general practice visit allows. Our PMDD treatment page covers that ground specifically.

Niyora is a PMS and PMDD support app. While you're tracking symptoms and waiting to see what a treatment does, Niyora's Moon can help if anxiety is making you replay an argument at 1am: you write down what happened, see it from another angle, and draft a reply you can hold onto for twenty minutes instead of sending it straight away.