Irritability, mood swings, low energy, brain fog, or the feeling that you react slightly differently than usual just before your period. PMS can affect how you feel and function every month.
That is precisely why interest in microdosing and PMS. Not only amongst women themselves: scientists, too, are increasingly focusing on the relationship between psilocybin, serotonin, female hormones and premenstrual mood.
There is as yet no clinical evidence that microdosing treats PMS. However, there are some interesting research findings that help to explain why microdosing is attracting so much interest in this context.
PMS stands for premenstrual syndrome and refers to physical and emotional symptoms that occur in the period leading up to a woman’s period and usually subside once her period begins.
Many women, for example, can relate to this:
PMS is sometimes described as a simple ‘hormonal imbalance’. It’s probably not quite that simple.
Oestrogen and progesterone fluctuate throughout every normal menstrual cycle. In the case of PMS, the following seems to be particularly important how sensitively the nervous system reacts to those normal hormonal changes.
This involves, amongst other things, serotonergic and GABAergic systems.
And that is precisely where an interesting link with psilocybin emerges.
Are you not yet familiar with the method? If so, please read this first what microdosing is and how it works.
For many women, mood swings are among the most recognisable symptoms of PMS.
That is why research into microdosing and mood relevant.
In a large prospective study, 953 people who were microdosing psilocybin were monitored for around a month and compared with 180 people who were not microdosing.
The researchers found that, on average, among those taking microdoses, small to moderate improvements in mood and mental health. These improvements were observed across different age groups and genders, and regardless of whether participants had mental health problems.
This study did not specifically focus on PMS. We cannot, therefore, conclude that the same results automatically apply to premenstrual mood changes.
However, it does explain why both researchers and users are interested in whether microdosing might also be relevant during the premenstrual period.
PMS isn’t always just about feeling ‘down’.
Some women find that their emotions hit them harder than usual. You may get irritated more easily, have less patience, or react more strongly to situations that you would normally find easier to let go of.
That's right emotional processing is an important topic in psilocybin research.
Psilocybin influences serotonergic processes and brain networks involved in the processing of emotional information. The new review on psychedelics and female hormones also describes how oestrogen and progesterone can modulate the same serotonergic systems.
This raises a fascinating research question:
Could psilocybin influence the way in which premenstrual emotions are experienced and processed?
We don’t have that answer yet. But the biological overlap is interesting enough to warrant further investigation.
PMS can also have an impact on cognitive function.
For example, some women experience reduced mental clarity, difficulty concentrating or that familiar feeling of brain fog.
Attention and cognition are also being studied in research into microdosing.
We explain in more detail how attention works — and why focus naturally fluctuates — in our in-depth feature on focus and attention.
The results here are less clear-cut than those from observational studies on mood. Placebo-controlled trials show that microdoses can indeed produce noticeable subjective effects, but do not consistently find improvements in all cognitive functions.
That’s important to know.
Microdosing should therefore not be seen as a guaranteed solution to premenstrual brain fog. However, cognition and attention remain relevant areas of research — particularly as we gain a better understanding of how hormonal changes influence the response to psilocybin.
Perhaps the most interesting question isn’t even:
“Can microdosing make my PMS go away?”
Another question is:
“Can microdosing affect how I experience and cope with my premenstrual symptoms?”
That difference is important.
Research into psychedelics does not focus exclusively on symptoms. Researchers also look at emotional processing, mental flexibility, self-reflection and the way in which people experience their own thoughts and feelings.
For someone who, for example, finds themselves getting caught up more easily in irritation, negative thoughts or emotional reactions during PMS, that’s an interesting perspective.
Not necessarily feeling any less — but perhaps look at what you’re feeling from a different perspective.
That is very much in line with how we at Wise Rootz view microdosing.
Measure. Observe. Reflect.
For some women, premenstrual symptoms are considerably more severe. In such cases, it may be a matter of PMDD: premenstrual dysphoric disorder.
PMDD may be accompanied by severe irritability, low mood, anxiety, emotional instability and significant limitations in day-to-day functioning.
From a scientific point of view, PMDD is particularly interesting because the condition does not appear to be caused simply by abnormal hormone levels. The brain’s sensitivity to normal hormonal changes seems to play an important role.
This makes research into serotonergic mechanisms relevant.
The new review from 2026 on female hormones and psychedelics explicitly identifies hormone-related mood disorders as an interesting future area of application for psychedelic research. The authors highlight the overlap between hormonal changes, serotonergic systems and brain networks involved in mood regulation.
Research into PMDD is still in its early stages, but that is precisely why it is worth keeping an eye on.
PMDD is, however, different from ordinary PMS. In cases of severe or recurring psychological symptoms, a professional assessment is important, and microdosing should not be used as a substitute for regular healthcare.
Of course, PMS isn’t just about mood swings.
Cramps, headaches, tiredness, tender breasts and bloating can be just as unpleasant.
We know considerably less about this.
Menstrual cramps, for example, are closely linked to prostaglandins and uterine contractions. There is currently insufficient clinical research to recommend microdosing as a treatment for period pain or other physical PMS symptoms.
Nevertheless, we believe it is worthwhile to observe these experiences during the microdosing process as well.
How was your energy level? How did you sleep? Did you have a headache? How did your body feel? And how does that compare to other months?
The whole picture may be more interesting than a single isolated complaint.
We might well consider this the most interesting development.
Historically, pharmacological and psychedelic research has not taken sufficient account of the influence of female hormones.
That is starting to change.
The review published in August 2026 in Molecular Psychiatry shows that oestradiol and progesterone can influence various processes relevant to psychedelics, including serotonergic signalling, 5-HT2A receptors, metabolism and brain networks.
The researchers argue that hormonal status is likely to be a relevant but as yet insufficiently studied factor in differences in response to psychedelics.
This is important for future research into PMS and PMDD.
Because, rather than simply including women in general psychedelic studies, attention is now being paid to the question:
What happens when we actually include female hormones in the research?
When it comes to a topic such as PMS, that can make a big difference.
Based on the current research, we would not recommend a specific ‘PMS microdosing protocol’.
At Wise Rootz, we recommend that Fadiman protocol:
Day 1 — microdosing day
Day 2 — rest day
Day 3 — rest day
Day 4 — microdosing again
If you’re new to microdosing, we recommend starting with 0.5 grams of fresh truffle and first take your time to see how that amount feels to you.
Do you experience PMS? If so, it might actually be worth paying extra attention to your premenstrual days over a period of several weeks.
Would you like to take a broader look at microdosing during the different phases of your menstrual cycle? Then read Microdosing and your cycle.
Not to constantly analyse yourself, but to recognise patterns.
PMS can feel different every month.
That is why your own experience provides valuable information.
For example, you can keep track of:
With the Wise Rootz app you can record your microdosing sessions, dosages, check-ins and personal reflections.
Over time, this creates a much more personal picture than if you simply tried to remember whether you felt ‘better’.
You might recognise a pattern.
You may find that factors such as sleep, stress and recovery are far more important than you thought.
Or perhaps you won’t notice much of a difference.
The basic principle remains the same:
observing your experience without deciding in advance what you ought to feel.
Scientific interest in microdosing and women’s health is growing rapidly.
We now know that psilocybin affects serotonergic systems. Observational studies into microdosing have found positive changes in mood and mental health. And new research suggests that female sex hormones are likely to play a role in how psychedelics are processed and experienced.
For PMS, this brings together a number of interesting areas of research:
hormones, serotonin, mood, emotional processing and psilocybin.
That does not mean, however, that microdosing is a proven treatment for PMS.
But that doesn’t mean there’s nothing interesting to say about it either.
On the contrary: the scientific basis for further investigating this relationship is growing ever stronger.
And for women who are discovering microdosing for themselves, we believe a mindful approach is particularly important:
Start small, follow a clear protocol and observe what actually changes for you.
Measure. Observe. Reflect.
Would you like to get started? Then read our Instructions for Using the Wise Rootz Microdosing Box, find out how to sweet spot find or view the Wise Rootz Microdosing Box.
This blog is intended to provide general, educational information and does not constitute medical advice. Research into microdosing, psilocybin and PMS is still ongoing. The studies discussed do not imply that microdosing has been proven to treat, prevent or cure PMS or PMDD.
Do you suffer from severe or recurrent premenstrual symptoms, are you taking any medication, or do you have a physical or mental health condition? Discuss this with a doctor or other qualified healthcare professional. Never change or stop taking prescribed medication on your own because of microdosing. Do not use microdosing products whilst pregnant or breastfeeding.
Kuypers K.P.C., Mason N.L., Carlier A., Totomanova I. & Haijen-Bongers E.C.H.M. (2026). Psychedelics and women’s mental health: the effects of female sex hormones on the efficacy and tolerability of psychedelics. Molecular Psychiatry.
Rootman J.M., Kiraga M., Kryskow P. et al. (2022). Psilocybin microdosers show greater observed improvements in mood and mental health at one month compared with non-microdosing controls. Scientific Reports, 12, 11091.
Cavanna F. et al. (2022). Microdosing with psilocybin mushrooms: a double-blind, placebo-controlled study.Translational Psychiatry.
