, Volume 52, Issue 1, pp 47–53 | Cite as

Propranolol effects on acute marihuana intoxication in man

  • A. Sulkowski
  • L. Vachon
  • E. S. RichJr.
Human Pharmacology


To investigate the possible interaction of a beta adrenergic blocking agent and marihuana, six healthy experienced marihuana smokers received the two drugs separately and in combination. Propranolol (120 mg per os) reduced resting HR and BP; there were no changes in performance on tasks designed to test psychomotor speed, attention, memory and learning. Marihuana (10 mg Δ9-THC), administered in smoke, induced the typical subjective state (“high”) with marked increases in HR, BP and conjunctival injection; it impaired performance on a learning test without significantly affecting attention. Pre-treatment with propranolol blocked effectively the cardiovascular effects of marihuana; it prevented the learning impairment and, to a lesser degree, the characteristic subjective experience.

Key words

Marihuana Propranolol Subjective drug effects Attention Learning 


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Copyright information

© Springer-Verlag 1977

Authors and Affiliations

  • A. Sulkowski
    • 1
  • L. Vachon
    • 1
  • E. S. RichJr.
    • 1
  1. 1.Psychiatric Research LaboratoryBoston University School of MedicineBostonUSA

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