Microdosing Survey

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Microdosing Survey Study

Thank you for your interest in the Microdosing Survey Study – a web-based study to assess the subjective effects of microdosing psychedelic substances

Are you planning to microdose a psychedelic substance (e.g. LSD/ 1P-LSD, psilocybin, ayahuasca/DMT, etc.) in the near future? Your experience is very valuable to us, so please sign up & take part in our study!

The Microdosing Survey Study is being run by the Psychedelic Research Group The aim of this project is to collect data on the process of microdosing a classic psychedelic substance (i.e. psilocybin, LSD/1P-LSD, ayahuasca, AL-LAD, salvia divinorum, DMT, 5-MeO-DMT, iboga/ibogaine or mescaline). Specifically, we aim to use online questionnaires to collect relevant data at different time points, about one week before, once a week during your microdosing experience (preferably 4-6 weeks), 6 weeks after and 6 and 12 months after the begin your experience. If you intend to microdose longer than 4-6 weeks, you are still eligible to take part.

The data we collect from this study will help to advance the scientific understanding of microdosing psychedelics, including how this experience can lead to the best possible outcomes. Further we intend to collect important information about best practice, safer use and harm reduction. The project has the potential to help develop future controlled studies on psychedelics in terms of microdosing, including clinical trials. We greatly appreciate the time you dedicate to this project. The data you provide is very valuable to us. We protect your anonymity, as no personally identifying information will be collected and we will not collect your IP address. As the Microdosing Survey Study is web-based, internet access is required. We further want to inform you that you will receive the results of the study as soon as the data is analysed.


To take part, you must be at least 18 years old of age, have a good understanding of the English language, and plan to microdose a classic psychedelic drug (i.e. psilocybin, LSD/1P-LSD, ayahuasca, AL-LAD, salvia divinorum, DMT, 5-MeO-DMT, iboga/ibogaine or mescaline) anytime within the next months. You are eligible to participate whether you had any experience with psychedelic substances or not and as well if you are already actively microdosing, there are no further exclusion criteria. You must also be willing to provide us with a correct E-mail address and be willing to receive a small number of E-mail reminders, which remind you to complete the relevant questionnaires at the appropriate time-points. If you decide to take part you should indicate your agreement to the online consent form and provide your e-mail address and your intended start date.


We will ask you to complete online questionnaires on nine different time points. We will assess your general state (baseline) one week before you start your microdosing experience. Further you will receive questionnaires once a week during a 4-6 week microdosing experience. In week 5 you will receive another weekly questionnaire together with the possibility to complete an open report, where you can describe your experience in your own words. After this period you will receive follow-up questionnaires at 6 weeks after, 6 & 12 months after the begin of your experience. If you are planning to microdose for onger than 4 weeks, you are still eligible to take part, as we will assess your ongoing experience in the weekly questionnaires.

Time-point 1: Anytime within 1 week prior to the planned start of your microdosing experience

If you plan to start microdosing a psychedelic within one-week from now, then this time-point may be today. It is just important that you start microdosing within 1 week of completing the baseline questionnaire. It is also very important for us that you complete the questionnaires at the 7 subsequent time-points (see below).

If after completing this questionnaire, you later decide to change your plans and either delay or cancel your planned psychedelic experience, this is fine. Completing this questionnaire does not oblige you to perform the microdosing routine. It will take approximately 40 minutes to complete the questionnaire at time-point 1. If you are not able to complete the questionnaire in one run, you can save your progress and complete it at another moment.

3 days before your start you will receive a protocol sheet for you to print out, where you can note your dosing day/s and the amount of substance you used on that day/s.


Time-point 2, 3, 4, 5: measures once a week (first weekly questionnaire starts 1 week after you started dosing)

The questionnaire at time-points 2, 3, 4, 5 are weekly questionnaires and should be completed once a week during the 4-week period. This means that you will receive the first weekly questionnaire 7 days after your first microdose. The weekly questionnaires should be completed on the day you receive them. It will take approximately 20 minutes to complete. We will send you an E-mail reminder about the upcoming questionnaires based on the start date you provide to us for your planned microdosing experience. Try to be accurate with this date and please inform the research team if the date changes (email: info@microdosingsurvey.com).

Time-Point 6: 5 weeks after & open Report

In week 5 you will receive a weekly questionnaire together with the opportunity to complete an open report about your experience. Here you can share your experience with us in further detail.

Time-point 7: 6 weeks after the begin of your microdosing experience

The questionnaire after the microdosing experience (time point 6) should be completed 6 weeks after the start your experience. If this is not possible, please try to complete it as soon as possible. It will take about 35 minutes to complete. If you are not able to complete the questionnaire in one run, you can save your progress and complete it at another moment. Please then try not to let 7 days pass before completing this questionnaire.

Please do go on completing these questionnaires, as if you drop out early, this affects our ability to use your data!

Time-point 8 and 9: 6 and 12 months after your microdosing experience

We would ideally like to follow you up after time-point 6 (6 weeks after) to assess how you are doing for a longer period, but we acknowledge that you might wish to withdraw from receiving email reminders about this follow-up. You are free to withdraw from these email reminders at any point. Please keep in mind, that any data you provide is valuable for us and we would appreciate if you continue the follow-up measures as well.

At the end of every questionnaire there will be a response confirmation: “You are about to submit your response. Are you still happy for us to use your anonymous data for our research?” An answer of “yes” will automatically submit the form.

Important information


At this point we want to emphasize that we are not encouraging drug taking behaviour, but if you were generally planning to microdose in the near future, we welcome you as a participant and appreciate your participation in our study.

You can freely choose how to arrange your microdosing experience, but we recommend that you do sufficient research before you start microdosing in order to ensure a safe use of those substances. We won’t provide information about where you can find the required substances or about how to administer them.


All obtained data is anonymous, no data will be shared that will identify you or your responses. You can withdraw from this project at any time by clicking “unsubscribe me from this mailing list” in the E-mails you receive from us, the participation in this study is non-binding and voluntary. If you wish that your previously submitted data will be discarded, please contact the research team via info@microdosingsurvey.com and request the deletion of your data.

Sign-up information

If you are about to sign up, please make sure that you provide your correct E-mail address, as you won’t receive the questionnaires otherwise.

If your intended start date is in less than 7 days from today, please make sure to sign up for the first possible start date you can pick. After this, contact the research team via info.@microdosingsurvey.com and inform the study administrator of your intended start date, so we can adapt it manually and you receive the necessary questionnaires at the right time-point.

Sign Up

Your first name

Email address

Date of first microdose

Study TermsI have read and understand the information provided.I agree to take part in the study.I understand that my participation is voluntary and that i am free to withdraw at any time without giving any reason and without my legal rights being affected.I agree to my anonymised data being stored on password protected computer systems.I agree to my email being retained.Sign up

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