NSIHT: National Survey Investigating Hallucinogenic Trends

National Survey Investigating Hallucinogenic Trends

The leading, most comprehensive survey of adults actively using psychedelic substances in the United States. NSIHT study will improve overall safety, utility, and effectiveness using real-world evidence.

 

Use of Psychedelic Substances in the United States, 2024

Latest Data Report (2024)

The Five Key Findings:

  • Psychedelic substance use was highest among younger adults. 

  • Psilocybin was the most used psychedelic 

  • Use varied by geographic region

  • Psychedelics were perceived to improve mental health
  • Most common settings of use included use with friends or family and in small private settings

 

Click to download Report

 

About NSIHT

NSIHT is the largest ongoing survey of adults using psychedelics in the U.S., providing critical data to improve safety and effectiveness. NSIHT has launched three times since 2024, expecting it’s fourth data collection period in Winter 2025. NISHT is designed to study the context surrounding how adults use these substances, including detailed measurements of behaviors related to the use of specific substances. The survey also monitors changes in psychedelic use over time.

 

 

What We Track  

17 psychedelic substances including both pharmaceutical and recreational forms including classic psychedelic, empathogenic, and dissociative substances
Behaviors surrounding use 
Outcomes of use
Characteristics of the people who use psychedelics 

 

 

Who Uses Our Data  

Researchers • Government Agencies • Clinicians • Policymakers

 

 

Survey Methods  

  • Design: Repeat cross-sectional online survey, conducted twice yearly

  • Participants: U.S. adults (18+) who used psychedelics in the past year

  • Coverage: Nationally representative across all states

  • Quality: Validated methodology with 2+ years of development

  • Funding: Development of pilot funded through US Substance Abuse and Mental Health Administration (SAMHSA) Grant No. 75S20124P00003

 

 

Work With Us

Our data supports evidence-based decisions in policy, clinical practice, and research. We can provide technical reports with data insights, limited datasets, or expert consultation. 

Contact: info@rmpds.org

To learn more or for collaboration opportunities & additional survey capabilities, please contact us

 

 

FAQ

  • How often is new data collected? Twice yearly, with annual comprehensive reports.

  • Is participation confidential? Yes, completely anonymous and confidential.

  • How is the data nationally representative? Through strategic oversampling and statistical transport weighting and data fusion techniques.

  • Where can I learn more about the survey methodologies? NSIHT is registered on Open Science Framework.

 

 

Learn More:

Current Bibliography Including NSIHT Data

Several NSIHT publications are anticipated to be published in 2025. Currently published and available publications are listed below:  

 

  • Rocky Mountain Poison & Drug Safety. (2025) Use of Psychedelic Substances in the United States, 2024: Results from the National Survey Investigating Hallucinogenic Trends (NSIHT) (RMPDS Publication No. RMPDS-2025-I-01). Rocky Mountain Poison & Drug Safety, Denver Health and Hospital Authority. Denver, CO. https://www.rmpds.org/nsiht

 

  • Rockhill K, Bemis EA, Schow N, Beekman K, Olsen HA, Fox EJ, Monte AA, Black CB. Establishment of External Validity of the National Survey Investigating Hallucinogenic Trends (NSIHT). Open Science Framework Protocol. doi:10.17605/OSF.IO/856DX. Retrieved from: https://osf.io/856dx

 

  • Rockhill K, Bemis EA, Schow N, Beekman K, Olsen HA, Fox EJ, Monte AA, Black CB. Establishment of Internal Validity of the National Survey Investigating Hallucinogenic Trends (NSIHT). Open Science Framework Protocol. doi:10.17605/OSF.IO/A65XV. Retrieved from: https://osf.io/a65xv  

 

NSIHT Psychedelic Survey Research

National population survey monitoring the real-world use of psychedelics to understand prevalence of use, context of use, benefits, and harms.


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Why Rocky Mountain?

With over 65 years of industry experience, Rocky Mountain Poison & Drug Safety is the leader in providing specialized services spanning the lifecycle of a drug or consumer product to public health, government agencies, and the pharmaceutical and consumer products industries.We ensure the highest level of service to our clients by meeting their unique and complex needs.

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