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Pricing
Outcome MeasureDepression

RRS

Ruminative Response Scale

1 Paper in Blossom

Papers Using RRS

Open Accessindividual

LSD microdosing in major depressive disorder: results from an open-label trial

This open-label Phase IIa trial (n=19, 15 male) found that an 8-week regimen of microdosed LSD (8μg initially, then 6-20μg twice weekly) for major depressive disorder was well-tolerated with no serious adverse events or cardiac valvulopathy, achieved 59.5% reduction in MADRS scores sustained for six months, and had only one withdrawal due to anxiety.

Published
February 1, 2026
Journal
Neuropharmacology
Authors
Daldegan-Bueno, D., Donegan, C. J., Sumner, R. L., Forsyth, A., Evans, W. J., Alshakhouri, M., Reynolds, L. M, Roop, P., Ponton, R., Smith, T., Hoeh, N. R., Allen, N., Sundram, F., Menkes, D. B., Muthukumaraswamy, S.

Quick Facts

Full Name
Ruminative Response Scale
Domain
Depression
Papers Indexed
1
Score Range
22–88
Interpretation
Lower = better
Unit
points
All Measures

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